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Username Post: 265 Power Pack Engines        (Topic#198023)
4dr 57 
"6th Year" Silver Supporting Member
Posts: 3412

Loc: Texas Hill Country
Reg: 11-10-04
09-03-08 08:18 PM - Post#1514536    


I recently met a guy who told me that the 265 Power Pack engines were only installed by the factory in Corvettes. Is this true
The trouble is you think you have time - Buddha




 
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Richard Martin 
Dedicated Enthusiast
Posts: 5148

Loc: Davis Islands, Florida
Reg: 06-12-03
09-03-08 08:28 PM - Post#1514540    
    In response to 4dr 57

  • 4dr 57 Said:

I recently met a guy who told me that the 265 Power Pack engines were only installed by the factory in Corvettes. Is this true




No....it isn't true. The guy may be thinking of the Corvette 240 horsepower 265 or it may depend on what his definition of "Power Pack engine" is.

Richard


 
DZAUTO 
Senior Member
Posts: 7539

Loc: Mustang, OK, USA
Reg: 12-25-99
09-04-08 05:44 AM - Post#1514670    
    In response to Richard Martin

There were 4 versions of the 265 available in 56: 2bl, 4bl, 2x4(225hp) and 2x4(240hp).
All 4 were available in BOTH pass cars and Vettes.
Supposedly, in 1956, the pass cars with the 2x4-240hp version got a short version of the Ram Horn exhaust manifolds. Apparently, that particular ex manifold version is quite rare and I have only seen one set on a 56 in my entire life. Were they genuine? I don't know, but it was quite noticeable that the outlet portion of the manifolds was shorter than the normal Ram Horn versions of 57-later.
Anyone here got pictures or information on these rare 56 PASSENGER car Ram Horn manifolds?????
They may, and they may not be the same as the second version of the 56 Corvette manifolds (guys are not very receptive about the idea of letting me take their exhaust manifolds off their car and doing a comparrison ).
The first version of the 56 Vette manifolds was a 2-bolt outlet and the second version was a 3-bolt outlet.
Tom Parsons


 
Richard Martin 
Dedicated Enthusiast
Posts: 5148

Loc: Davis Islands, Florida
Reg: 06-12-03
09-04-08 06:10 AM - Post#1514687    
    In response to DZAUTO

Tom:

All the original real '56 265/225 engines in full size '56 Chevrolets I have seen had the ram horn exhaust manifolds. This includes new cars still at the dealer. My Uncle was a dealer.

I have never seen factory printed documentation that Chevrolet installed, at the factory, the 265/240 in Chevy full-size passenger cars. Yes...Chevy offered an over the counter camshaft/kit to convert the 265/225 to a 265/240 and NHRA and NASCAR considered them, and allowed them to run in competition as "stock" but were any factory built? Where can I find factory printed documentation to support your claim that Chevrolet actually installed the 265/240 in '56 full size Chevrolets? I already have a ton of '56 factory printed info and it's not there.

Richard



 
DZAUTO 
Senior Member
Posts: 7539

Loc: Mustang, OK, USA
Reg: 12-25-99
09-04-08 07:28 AM - Post#1514731    
    In response to Richard Martin

  • Richard Martin Said:
Tom:

All the original real '56 265/225 engines in full size '56 Chevrolets I have seen had the ram horn exhaust manifolds. This includes new cars still at the dealer. My Uncle was a dealer.

I have never seen factory printed documentation that Chevrolet installed, at the factory, the 265/240 in Chevy full-size passenger cars. Yes...Chevy offered an over the counter camshaft/kit to convert the 265/225 to a 265/240 and NHRA and NASCAR considered them, and allowed them to run in competition as "stock" but were any factory built? Where can I find factory printed documentation to support your claim that Chevrolet actually installed the 265/240 in '56 full size Chevrolets? I already have a ton of '56 factory printed info and it's not there.

Richard



Richard,
That VERY WELL may be a valid correction on your part.
The one and only 240hp car that I have ever seen was a black 56 210. It was in Tulsa several years ago and the owner had what APPEARED to be legit documentation.
And, additional support for your correction to my comment is that the 56 Vette list of options APPEARS to indicate that the 240hp option was a cam installation, BUUUUUUUUUUUUT, it isn't sufficiently clear as to whether the cam was FACTORY or FIELD installed.
On the Corvette side, MUCH of the information is quite cloudy as to what was and what was not installed on the assembly line at St. Louis.
In a totally different (but similar) situation, this has brought about a long standing conflict regarding the ACTUAL assembly line production of a handful of 56 Vettes (the SR1) and NCRS judges. An extremely dear friend of mine has what is about the most complete and thoroughly documented 56 SR1 with a 240hp engine------------------- -and up until now-------------NCRS has rejected accepting it for judging because it (supposedly) was not assembled in the St. Louis plant!!!!! Wrong!
Sooooooooooooooooo, where I'm going with all of this, is, the paperwork kind of indicates that 240hp engines were the result of a cam change, BUT, was that done during assembly at the Flint engine plant, or, by the dealer/owner in the field??????? I DO NOT have the true answer!
Although, if my friend's 56 SR1 was in fact assembled----------with engine----------in the St. Louis plant, then the cam for the 240hp version would have been installed at the Flint engine plant-----------thus, it would have been a genuine factory option engine. That's the best answer I can give you. As of this date, it APPEARS there were ABOUT six GENUINE 56 SR1s built.
By the way, the 56 SEBRING racers (4-built/modified by engineering from 56 production line cars/55 cars with prototype 56 bodies about Jan 56) ARE NOT the same car as the six 56 SR1 cars (built on the assembly line in the May-Jun time frame).

AND, one last additional note.
The SR2 Corvettes are labeled as 57s. But they are not really 57s.
They were pulled from the 56 assembly line by engineering/design and modified into what was to become, but failed, the SR race program. Thus, the four (yes, FOUR) SR2s are actually 56 Corvettes-all 4 are still alive in the hands of private owners-one is my dear friend's, who has a 56 Sebring Vette, 56 SR1 and the 4th SR2, plus a 57 Airbox race car and a 58 with the HD suspension/brake pkg and FI. Oh ya, and a genuine 270hp, 3p (now 4sp) 57 Bel Air and a genuine, matching number 62 Beach Boy car (Biscayne w/ virgin 409-4sp-2x4-posi), and others.
No, I ain't that rich! Just a friend.
Tom Parsons


 
Richard Martin 
Dedicated Enthusiast
Posts: 5148

Loc: Davis Islands, Florida
Reg: 06-12-03
09-04-08 08:01 AM - Post#1514753    
    In response to DZAUTO

Tom:

There is a RPO # for the Corvette 265/240 (RPO 449) so in my opinion this indicates the engine was factory installed in Corvettes. The deal was... both RPO 469 (265/225) and RPO 449 had to be listed on the dealer's order form. According to the Corvette Black Book 111 265/240 engines were installed in the '56 Corvette. I believe the 265/240 engine was released a few months after the '56 Corvettes first became available....that is why it is not listed in the early printed literature. The base 265/210 engine is not listed in early printed lit. either.

Thank you for the additional information. I saw a SR2 several years ago at an annual Chevy car show in Plant City which was hosted by Bill Towers who is supposed to be a well-known Chevrolet expert and collector. The SR2 I saw had a racing history and if I remember correctly the car was driven in a sports car race or two by a famous NASCAR driver....may have been Curtis Turner.

Richard

 
DZAUTO 
Senior Member
Posts: 7539

Loc: Mustang, OK, USA
Reg: 12-25-99
09-04-08 10:08 AM - Post#1514824    
    In response to Richard Martin

Lets see if I get the order of ownership correct here.
#1 SR2-Rich Mason in AZ (originally built for Harley Earl)
#2 SR2-Bill Tower in FL (originally built for Bill Mitchel)
#3 SR2-Richard Fortier, former owner of Paragon Reproductions (originally built for Harlow Curtis)
#4 SR2-My dear friend, John Neas (originally pieced together from "left over" SR2 parts, because the "planned" SR2 program for 57 came to a screaching hault-same thing happened to the Grand Sport program in 63 as well as the 63 427 Mystery engine-Dumb, dumb, dumb @$$e$ at Chevrolet corporate level!!!!), this car has a strange and VERY little known history.

The first two were/are serious race cars in their day with all the HD equipment (in their day and time) known to engineering for competition. VERY NEAT "stuff" is on those 2 cars. The third car was a "personalized status" car for top level GM exec Harlow Curtis. Almost no HD stuff was installed on it.
The first car, now owned by Rich Mason, has a 350 fed by a modified DUAL AIR METER Rochester FI unit. TRICK!!!!
The last car went through numerous confugurations and has a mixture of HD components. Today, it has an ALL ALUM 350 (REAL GM block-Winters foundry) with a highly modified Rochester FI unit, built by yours truly.
I can post pictures of any of these if you're interested.

Sorry, I realize that I got waaaaaaaaaaaaaay off on a tangent here, because this is a "stock" 55-57 section. BUUUUUUUUUUUUT, much of what eventually got installed on production cars was at one time on concept or engineering and development cars or Corvettes.
And probably one of the most notable examples is----------------------- ---------The Nomad wagon-------------------- -it came DIRECTLY from a Corvette concept car. Oh ya, and so did the Impala (betcha didn't know that one!).
Tom Parsons


 
Richard Martin 
Dedicated Enthusiast
Posts: 5148

Loc: Davis Islands, Florida
Reg: 06-12-03
09-04-08 10:45 AM - Post#1514864    
    In response to DZAUTO

Tom: Intersting stuff.... thank you

'56 Corvette brochure: click on brochure pages to enlarge
http://tocmp.com/brochures/Chev/1956/C orvette/inde...

Richard

 
Ronnie44 
Senior Member
Posts: 9041
Ronnie44
Loc: Tampa Bay, Florida
Reg: 12-23-03
09-04-08 12:06 PM - Post#1514946    
    In response to Richard Martin

My take on the whole thing is that some buyers probably did buy 240HP Power Pac engines right from the dealer. As a new owner, they might not have known, or cared, whether it came from the factory that way, OR the dealer installed certain Chevrolet parts right there at the dealership. In some cases, it might also not show on the sales invoice whether those items where dealer or factory installed. I guess a more modern example would be the Yanko vehicles, which are mostly dealer mods.
I would guess that very few Chevrolet sedans actually left the showroom floor in the same configuration as it left the factory. There were just too many things that the dealer could, and would, do to make a sale. If it required putting a 240HP engine in a four door sedan, I'm sure the dealer would do everything possible to make sure that he made the sale.
In memory of George K Fullam(Goodwrench) Died 31 Mar 2005

To view my '57 Bel Air, and my previous '55 & '56 hardtops and '56 Corvette: Click Here


 
DZAUTO 
Senior Member
Posts: 7539

Loc: Mustang, OK, USA
Reg: 12-25-99
09-04-08 12:36 PM - Post#1514961    
    In response to Ronnie44

  • Ronnie44 Said:
My take on the whole thing is that some buyers probably did buy 240HP Power Pac engines right from the dealer. As a new owner, they might not have known, or cared, whether it came from the factory that way, OR the dealer installed certain Chevrolet parts right there at the dealership. In some cases, it might also not show on the sales invoice whether those items where dealer or factory installed. I guess a more modern example would be the Yanko vehicles, which are mostly dealer mods.
I would guess that very few Chevrolet sedans actually left the showroom floor in the same configuration as it left the factory. There were just too many things that the dealer could, and would, do to make a sale. If it required putting a 240HP engine in a four door sedan, I'm sure the dealer would do everything possible to make sure that he made the sale.



That is ABSOLUTELY correct!
There was a time, and WAS is the correct tense of the verb, when car dealers would, and could do many things for a customer when sufficient green paper was laid on the table.
Those days are long, long gone. Furthermore, there were dealers (Yenco, Baldwin-Motion, etc) who actually had service depts that specialized in doing these kinds of modifications. If you could pay, you could play.

Also, there were some cars that were true (????????) RPO cars. But the funny thing was, it seems ONLY the bone fide racers were privlidged to the information about them.
There were a FEW dealers who did not have bone fide racers in their area, BUT, someont in the dealership KNEW about these kinds of cars/RPOs and a few were able to order such a car for an unknown person-----------and the car got delivered. Such examples were the small quantities of Z11 Impalas, ZL1 Camaros and Z16 Chevelles. Only very small numbers of those cars survive today-------------------- and their value today is--------??????????????? ?????
I only wish I had known 40yrs ago what I know today! Oh well-------------------
Tom Parsons


 
Coley 
My Birthday Week
Posts: 3973

Age: 72
Loc: Milledgeville, IL. 61051
Reg: 11-23-00
09-04-08 07:09 PM - Post#1515255    
    In response to DZAUTO

Does anyone have a picture of the 2 bolt heat riser for the '56 2 bolt manifold? I think I may have one.
Any man that thinks he is too old to learn new things, probably always was....


 
Gene_Schneider 
Ultra Senior Member
Posts: 11012

Loc: Wisconsin..USA
Reg: 09-27-02
09-05-08 06:17 AM - Post#1515453    
    In response to Coley

The 1955 and 1956 log type mamifolds used on 2 and 4 Bbl engines had casting #3704791 and 792.

The early 1956 dual 4 Bbl rams horn with 2 bolt heat riser had casting 33725563 manifolds on both sides (from my info) and used the same 3725981 heat riser as the 1956 log manifold.

The late 1956 dual 4 Bbl rams horn manifolds had casting #3731557 and 558. Not used in 1957.
ChevGene 1934 Master sedan 1939 Master DeLuxe Town Sedan 1950 Styline DeLuxe Power Glide 1957 Nomad 283 PG 1963 Corvair Convertible


 
Royer 
Needs to Get Out More Member
Posts: 11411

Loc: Bloomfield Hills, Michiga...
Reg: 09-25-01
09-05-08 01:19 PM - Post#1515732    
    In response to Gene_Schneider

The previous posts indicate that, in the past, dealers were inclined to - and did - make many changes to cars at the request of customers. And, I (as the son of a former dealership owner) know that this is the case. But, the vast majority of changes that were made at the request of customers were for things that are far more mundane. Examples would be the addition of power steering, power brakes, a radio, clock, different brand or whitewall tires, etc.

Royer

 
DZAUTO 
Senior Member
Posts: 7539

Loc: Mustang, OK, USA
Reg: 12-25-99
09-05-08 02:24 PM - Post#1515775    
    In response to Royer

  • Royer Said:
The previous posts indicate that, in the past, dealers were inclined to - and did - make many changes to cars at the request of customers. And, I (as the son of a former dealership owner) know that this is the case. But, the vast majority of changes that were made at the request of customers were for things that are far more mundane. Examples would be the addition of power steering, power brakes, a radio, clock, different brand or whitewall tires, etc.

Royer



And again, that is absolutely correct.
Changes, such as modifying an engine, replacing a non-posi rear with a posi, or even changing gear ratios, completely replacing one engine with another engine, such as replacing a mild hyd cam 396 with a hot solid lifter 427, WAS NOT common.
But many dealers WOULD do this for selected customers for a price. As I mentioned earlier, there were a FEW (VERY few) dealers who specialized in these kind of modifications for customers.
Also, SOME options could NOT be delivered on a car from the factory, BUT, the parts could be bought through the parts department and scheduled for installation by the service dept. A perfect example was the cross ram 2x4 setup for the 69 Z28 Camaro.
Back in the early 60s (and I forget who) there was a dealer who would install a COMPLETE Corvette fuel injected 327 into a ChevyII. A V8 WAS NOT available in a ChevyII until the 64 model. But once Chevy made a V8 available in the ChevyII from the factory, then ANY ChevyII could have a SB V8 installed simply by buying the 64-65 V8 installation components from the parts dept.
The dealers that specialized in this level of modification were very few, but, if it would fit, and was available from the parts dept, and the customer would pay the price, it could and was done.
I don't know about the 50s, but for sure back in the 60s right here in the Okla City area, there were 2 Chevy dealers who had a reputation for doing "performance" modifications. During my college years when I worked in a chrome plating shop in the 60s, a guy had a shop across from the chrome shop and he had bought a 69 ZL1 Camaro from one of these dealers (Seltzer Chevrolet in Yukon, OK). At first, I thought his Camaro was just another Camaro with open headers. One day between chroming a batch of bumpers, I walked over to his shop just to see what he had in the Camaro. WOW!!!!!!!!!!!!!!!! an all alum BB. That's when I learned what a ZL1 was. Before that, I had never heard of one!
Tom Parsons


 
bobg1951chevy 
"7th Year" Silver Supporting Member
Posts: 6761
bobg1951chevy
Age: 72
Loc: Ellijay, GA
Reg: 02-18-08
09-05-08 02:24 PM - Post#1515777    
    In response to Royer

Like you, Royer, I can recall the tire swaps, adding the radio, o/s mirrors, aftermarket a/c etc., but, as you stated, mostly run of the mill stuff.

Being in the Chevy parts dept in the 60's, I can also recall the PART NUMBERS and DESCRIPTIONS for the "benefit" of the drag racing guys coming in brown envelopes with the info stapled together on 8 1/2 x 11 xerox paper. Diagrams were hand sketched.

Examples were the fiberglass front ends for the 63 full size ....the reverse rotation cam, optional 4 bbl manifold, modified distributors ( for the reverse rotation cam ) for the 66 Chevelle 396's ..... ram dual quad intakes for the 68 Z28 Camaro, plus all the other stuff I certainly forgot.

None of this info was acceptable or "ready" to put into the GM parts catalog as pages normally were with pricing and part number updates and such ... this stuff was all in the "brown envelope".

A very "hush hush" time for Chevy .... back in the day.

Thanks for allowing me to ramble.

Bob

Bob G.

1951 Styleline Deluxe 2 dr sedan. 1955 235" 3 speed std.
1951 Styleline Deluxe Sport Coupe. 1962 246" 3 speed std. o/d.

www.picturetrail.com/sfx/album/view/215790 56...








 
4dr 57 
"6th Year" Silver Supporting Member
Posts: 3412

Loc: Texas Hill Country
Reg: 11-10-04
09-05-08 04:57 PM - Post#1515908    
    In response to bobg1951chevy




Examples were the ....the reverse rotation cam...

A very "hush hush" time for Chevy .... back in the day.


Reverse Rotation Cam ---Your putting us on, right?






The trouble is you think you have time - Buddha




 
DZAUTO 
Senior Member
Posts: 7539

Loc: Mustang, OK, USA
Reg: 12-25-99
09-05-08 05:11 PM - Post#1515919    
    In response to 4dr 57

  • 4dr 57 Said:



Examples were the ....the reverse rotation cam...

A very "hush hush" time for Chevy .... back in the day.


Reverse Rotation Cam ---Your putting us on, right?










NO SIR, HE IS NOT, REPEAT, NOT PUTTING YOU ON!!!!!!!
I had totally forgotten about this! (I also have forgot a lot over the years) The way it worked is that there was a cam/timing gear set that eliminated the timing chain and the crank and cam gears meshed with each other (so the cam and dist were reverse rotation from a regular cam/dist). Thus, the need to install a dist that turned the opposite direction.
My cousin (I'm closer to my 2 cousins than I am to my own brother) and myself installed one of these cams in a 67 Chevelle SS396 (when it was 1yr old) that belonged to my cousin's very good friend (as we speak, I've left a message with my cousin to call me back with details). As I remember, to install this cam, it required Cam, lifters, crank/cam gear, distributor. If I also remember correctly, this special distributor had a ball bearing in it because of its rotation, the shaft thrust was down instead of up as on a regular distributor.

I did not work at a dealer back in those days, but my 2 cousins did (brothers). This was back in the 60s.
One was a service writer at the Chevy dealer in Edmond, OK and the other worked in the parts dept in downtown Okla City.
Both told me about all kinds of stuff.
Tom Parsons


 
Chevyfanatic 
Banned
Posts: 1130

Reg: 06-01-07
09-05-08 05:44 PM - Post#1515951    
    In response to DZAUTO

The reverse rotation cam with gear set(BB not SB) was from the marine offshore racing dept. I should still have one or two laying around.

Edited by Chevyfanatic on 09-05-08 06:11 PM. Reason for edit: No reason given.

 
Rick_L 
Honored Member
Posts: 25785

Loc: Katy, Tx, USA
Reg: 07-06-00
09-05-08 06:33 PM - Post#1515998    
    In response to Chevyfanatic

Reverse rotation for marine engines was the whole engine, not the camshaft. So the prop would turn the direction wanted.

Reverse rotation cams worked so well that nobody knows about them. They were just a throwback to the 6 cylinder days.

 
Chevyfanatic 
Banned
Posts: 1130

Reg: 06-01-07
09-05-08 07:04 PM - Post#1516024    
    In response to Rick_L

No Rick, the cam only was reverse rotation. Two gear timing gears with big offshore cam for racing. There may have been reverse rotation engines but these were sq port 396 and 427 with reverse rotation cams only.

Edited by Chevyfanatic on 09-05-08 07:08 PM. Reason for edit: No reason given.

 
DZAUTO 
Senior Member
Posts: 7539

Loc: Mustang, OK, USA
Reg: 12-25-99
09-05-08 07:28 PM - Post#1516042    
    In response to Chevyfanatic

OK, here is what I found, buried waaaaaaaaaaaaaay down deep in all of my old stuff.
Back in the days before Chev started publishing their CHEVROLET POWER CATALOG, 1st, 2nd, 3rd Edition, etc, etc, there was a list of Heavy Duty Parts for Pass, Corvette, Camaros.
Here is what I found in this list for the reverse rotation cam, gears and dist
3925533-Camshaft (gear drive)(Note 4)
Note 4-Ball bearing distributor should be used with this cam. Also use with Thrust Bearing Unit 3887871.
8272965-Gear
330815-Sprocket
3887871-Thrust Unit (Camshaft) gear drive only
1111263-Distributor (Ign. Imp. Mech)(Tach Dr) Gear Driven Cam
There was a counterpart to the above distributor that WAS NOT a tach drive dist, but I couldn't find a part number for that.

Soooooooooooooooooooooooo , there you have it, ACTUAL Chevrolet part numbers for the reverse rotation cam and distributor and gear drive (as opposed to chain drive) timing gears (BIG BLOCK ONLY).

As Bobg1951 above mentioned, this was a hush hush time for Chevy and a lot of parts just were not in the "regular" parts catalog. You either had to know about this stuff, or, you had to know where to go to find out about it.
The average joe just did not know about some of this stuff. There were a few ocassions when my cousin that worked in the parts dept would tell me about some "weird" stuff that would come in, or a list of parts that was not normal parts.
One day he called me and told me about some SB heads that came in and the spark plugs were threaded wrong because they were at angles instead of straight.
He said some guy ordered them (paid for them in advance) and then decided he didn't want them. Since they were special ordered, they couldn't give the guy a refund and he said OK. My cousin told me they couldn't sell them and since they were already paid for I could have them if I wanted them. I told him, nah, I don't know what I'd use them for!!!!!!!!!!!!! ARRRRRRRRRRRRGH!

Then there was the day they got in one of the special HD Muncies (translate M-22) and hadn't sold it and needed it out of the parts inventory. He could buy it as an employee for $325 for me if I wanted it---------------------bu t back in those days I was so broke I couldn't even pay attention. So I had to pass (I was barely able to scratch up college tuition at $5.75/hr, so $325 was a fortune to me).
Tom Parsons


 
Chevyfanatic 
Banned
Posts: 1130

Reg: 06-01-07
09-05-08 07:41 PM - Post#1516059    
    In response to DZAUTO

Here's a pic of the gear drive
http://pic50.picturetrail.com:80/VOL478/11550455/2...
I knew I had some. The cam is probably laying with my old cores but they don't look any different, except the way they attach to the gear. This one has a date of 0195, the "o" may be something else, a bit of some clearance issue wiped most of it out. There's a part number on the large gear. I'll take a closer look.3856351
The only reason these were used was for reliability instead of a chain.
The distributors I pulled out of these engine were corvette style tach drive with elec amplifier but were not ball bearing, had normal bronze bushings.

Edited by Chevyfanatic on 09-05-08 07:53 PM. Reason for edit: No reason given.

 
DZAUTO 
Senior Member
Posts: 7539

Loc: Mustang, OK, USA
Reg: 12-25-99
09-05-08 07:51 PM - Post#1516066    
    In response to Chevyfanatic

It's kind of amazing that us "old guys" remember about stuff that today's young whipper snappers don't even believe ever existed!

OK, so why do I remember all this stuff????
Because I was there when it happened!
Tom Parsons


 
Chevyfanatic 
Banned
Posts: 1130

Reg: 06-01-07
09-05-08 07:55 PM - Post#1516070    
    In response to DZAUTO

Hey who ya calling old Willis?

I had completely forgot about these. They weren't really any big deal. Amazing that I knew it would be laying on my "junk" shelf. I have no idea why I have even bothered to keep this around.

 
bowtiefan 
"7th Year" Silver Supporting Member
Posts: 2105

Loc: Vacaville, CA
Reg: 02-19-04
09-05-08 08:07 PM - Post#1516082    
    In response to DZAUTO

MAN I love reading your history lessons Tom. Thanks a lot and keep it up.

Ken
38 & 39 2dr sedan, 41 coupe, 54 convertible, 56 Nomad, 57 210 2dr sdn, 70 Camaro RS, Corvettes; 57, 61, 65 396 coupe, 67 427 convert, 69 & 72 T-top, 88 coupe,91 ZR-1, 07 Z06, 07 Silverado, 09 BMW 135i convert.
http://www.picturetrail.com/ken58


 
bobg1951chevy 
"7th Year" Silver Supporting Member
Posts: 6761
bobg1951chevy
Age: 72
Loc: Ellijay, GA
Reg: 02-18-08
09-05-08 09:23 PM - Post#1516136    
    In response to DZAUTO

After writing about the reverse rotation cam, I had to chuckle when 4dr57 said " you're putting us on, right?"

It's amazing the things that occured back in the day, such hush hush stuff that still today, some folks don't know, as witnessed by the posts here. It was a great time all for the love of drag racing.

Here's another fact for you guys ...when ordering these " H.D. Parts", I could not order them through normal channels. We had a stock order, a supplimental stock order, a car inop order, and a VIP order. Don't know about nationwide, but in the Cleveland, Ohio zone, we had to order these special parts one way and one way only .... through a phone call to the "parts interpreter" ...a guy or gal at the zone office who manually took the order and listed the part numbers in a fashion others would not recognize. The "special" parts order arrived with a predetermined 4 digit code on the order, placed there by the "parts interpreter".

It was all cloak and dagger back then, but you must remember RACING was the big draw within GM, Ford and Chrysler. Race secrets were top notch security. Remember the brown envelope ....

Bob

Bob G.

1951 Styleline Deluxe 2 dr sedan. 1955 235" 3 speed std.
1951 Styleline Deluxe Sport Coupe. 1962 246" 3 speed std. o/d.

www.picturetrail.com/sfx/album/view/215790 56...








 
raycow 
Honored Member
Posts: 18714

Age: 71
Loc: San Francisco, CA
Reg: 11-26-02
09-06-08 12:00 AM - Post#1516180    
    In response to DZAUTO

Tom, do you show a reverse rotation oil pump for this engine? If not, I'm thinking the distributor drive gears were cut to drive the distributor in the normal direction. This would simplify the parts situation a bit, because then you wouldn't need a reverse distributor or oil pump, just the cam and a special distributor gear.

Ray
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craig32 
Frequent Contributor
Posts: 1253

Age: 52
Loc: PA
Reg: 08-05-07
09-06-08 01:31 AM - Post#1516196    
    In response to raycow

Guys, I have one of those cams in use, but it was made by Isky. I bought it from a guy who drag raced in the '70's. As mentioned, just two gears that ran directly together, not like the 4 gear sets they have now. It is a roller cam kit that came with lifters, pushrods, reverse gear for the distributor, and a rev kit - as well as cam and crank gears and the shaft itself.
To quote Tom - Soooooooo, if the distributor is turning in the proper direction, the oil pump will be running the same as normal also.
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Chevyfanatic 
Banned
Posts: 1130

Reg: 06-01-07
09-06-08 10:17 AM - Post#1516439    
    In response to craig32

The GM units were flat tappet, solid lifter cams. Similiar specs to L88 and such.

 
raycow 
Honored Member
Posts: 18714

Age: 71
Loc: San Francisco, CA
Reg: 11-26-02
09-06-08 12:14 PM - Post#1516501    
    In response to craig32

Ok, so it does use a reverse gear for the distributor. That's what I was hoping it would do, just to keep things simple. Thank you.

Ray
Bacon is the gateway drug for vegetarians - Bridget Lancaster


 
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