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Username Post: "Tri-Power" Carb ID        (Topic#349550)
Dean50 
"11th Year" Gold Supporting Member
Posts: 1164
Dean50
Loc: Detroit area
Reg: 01-02-07
02-07-18 09:20 AM - Post#2723641    

I have been curious about the carbs I have been running. GM Rochester 2 barrels, only the center one has manual choke and idle and that's the only one I could find a number on. The two outside are on or off depending on progressive linkage, couldn't see any serial numbers. Just wondering if anyone would know what car these types of carb were originally used on. I bought them as a unit with the Edelbrock manifold a few years ago and had them rebuilt.
Thanks for any info.

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Dean50



 

50hotrod 
"6th Year" Silver Supporting Member
Posts: 923
50hotrod
Age: 60
Loc: Wisconsin
Reg: 07-25-11
02-07-18 09:48 AM - Post#2723643    
    In response to Dean50

Looks like the carbs on mine from a Chevy 348, but the gas line inlet is different. So I'd guess Pontiac 389...


Well, you know what's wrong with the world today

People done gone put their Bible's away

They're living by the law of the jungle not the law of the land

"Simple Man" By Charlie Daniels



Edited by 50hotrod on 02-07-18 11:11 PM. Reason for edit: No reason given.

 
rrausch 
"14th Year" Silver Supporting Member
Posts: 13611
rrausch
Loc: L.A, Cal. & St. Louis...
Reg: 04-07-03
02-07-18 10:06 AM - Post#2723645    
    In response to 50hotrod

Maybe Carbking will see this Thread.

1953 210 Convertible, 261 with dual Carter YF 966S carbs, P.S., Remote Bendix P.B. Booster... shade-tree restoration about done.




 
kzhurley 
Forum Newbie
Posts: 98
kzhurley
Age: 35
Loc: Millersburg,Ohio
Reg: 01-02-12
02-07-18 11:09 AM - Post#2723654    
    In response to Dean50

They may be just regular 2bbls converted to secondary carbs..that's what I did on my 348 tripower.. I think that the secondary carbs on the 389s where large base

1950 Styleline Deluxe 2-door sedan..
348 tripower/NP833 4-Speed/3.73
1950 Styleline Deluxe 4-door..
Vortec 4200 I-6/4l60e/3.42/current project car
1956 Cadillac Coupe de Ville 500 efi/4l80e
1987 GMC R1500 Sierra Classic
454 tbi/700r4/3.42


 
56sedandelivery 
Dedicated Enthusiast
Posts: 5271
56sedandelivery
Age: 66
Loc: Everett, Wa.
Reg: 02-26-08
02-07-18 11:49 AM - Post#2723661    
    In response to kzhurley

My "guess" would be they are original 348 tri-power carbs. The end carbs have no provisions for chokes; do they have idle screws in their bases? The other guess would be carbs used on Pont or Olds tri-powers; both had early and late tri-power setups. Early had small bases, late had the larger bases. Yours look to be small bases. What manifold are you using, both the brand and model number?
I am Butch/56sedandelivery.

I can see a partial "Edelbrock" in one photo, but the model of the intake would possibly help some.




Edited by 56sedandelivery on 02-07-18 11:51 AM. Reason for edit: No reason given.

 
kzhurley 
Forum Newbie
Posts: 98
kzhurley
Age: 35
Loc: Millersburg,Ohio
Reg: 01-02-12
02-07-18 02:11 PM - Post#2723668    
    In response to 56sedandelivery

Good eye butch. I did Not notice the lack of choke plate holes in the secondary carbs

1950 Styleline Deluxe 2-door sedan..
348 tripower/NP833 4-Speed/3.73
1950 Styleline Deluxe 4-door..
Vortec 4200 I-6/4l60e/3.42/current project car
1956 Cadillac Coupe de Ville 500 efi/4l80e
1987 GMC R1500 Sierra Classic
454 tbi/700r4/3.42


 
Dean50 
"11th Year" Gold Supporting Member
Posts: 1164
Dean50
Loc: Detroit area
Reg: 01-02-07
02-07-18 03:01 PM - Post#2723675    
    In response to 56sedandelivery

Thanks guys.
Butch, the manifold is Edelbrock and I think the number would be 5419. The center carb sits higher, like the old Pontiac 389 Tri-Power. I have always just assumed they were 389 Pontiac carbs for that reason. I've been trying to design a one-piece air filter for this, or put some stock Pontiac type filters on. I'll do more measuring on the four bolt bolt spacing, etc.
Thanks again everybody.

Dean50



 
56sedandelivery 
Dedicated Enthusiast
Posts: 5271
56sedandelivery
Age: 66
Loc: Everett, Wa.
Reg: 02-26-08
02-07-18 03:48 PM - Post#2723680    
    In response to Dean50

So, it's not the earlier 55/56, 265's, or the 57 on to later 60's/earlier 70's intake. Aftermarket secondary linkage, so that does't help either. I still say 348 carbs; maybe early Olds/Pont/Caddy. I like your current air cleaners, but they probably are't real effective. Then they're the only chrome, other than the oil fill cap/filter, so that stands out. It would look good with Vette or M/T valve covers, but I think you're going for a more "stock" look. Looking at E-Bay, #272989310267 is a used tri-power air cleaner for a flathead V-8 F*rd painted black (don't now the spacing for carbs). Then # 381244337123 is a larger (still chrome) style. Plastic plumbing pipe fittings to adjust for carb height glued to a homemade plate with an aftermarket top painted black? You could always go with an early factory 4 barrel intake/carb and air cleaner. I am Butch/56sedandelivery.




 
Dean50 
"11th Year" Gold Supporting Member
Posts: 1164
Dean50
Loc: Detroit area
Reg: 01-02-07
02-07-18 04:37 PM - Post#2723684    
    In response to 56sedandelivery

Thanks Butch
All pretty cool ideas. Good idea about the spacer to even them up. I have some new finned valve covers and may put them on this winter. Also looking for the cool old Vette style for a change of look down the road. Met a guy last summer who had three oil bath style air cleaners on a Deuce roadster. He designed them and a guy from Oz built them.
Very cool.

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Dean50



 
56sedandelivery 
Dedicated Enthusiast
Posts: 5271
56sedandelivery
Age: 66
Loc: Everett, Wa.
Reg: 02-26-08
02-07-18 10:31 PM - Post#2723716    
    In response to Dean50

^^^^^^ Now that does look nice! ^^^^^^ I just happen to have several pairs of the 7 fin Corvette valve covers in both staggered and straight pattern bolt patterns. "Most" of my "heads in waiting", completely rebuilt heads, have staggered patterns. I could make you a good deal; probably cheaper than you could find them anywhere else. I'm looking for a pair of the 9 fin Corvette valve covers; those are the rarer version that are $$$$$. I also have both pattern in Mickey Thompson valve covers. Keep posting your progress. I am Butch/56sedandelivery.




 
50hotrod 
"6th Year" Silver Supporting Member
Posts: 923
50hotrod
Age: 60
Loc: Wisconsin
Reg: 07-25-11
02-07-18 10:59 PM - Post#2723718    
    In response to Dean50

Notice the difference in the fuel line connections between Chevy 2G and the Pontiac 2G.

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Well, you know what's wrong with the world today

People done gone put their Bible's away

They're living by the law of the jungle not the law of the land

"Simple Man" By Charlie Daniels



 
50hotrod 
"6th Year" Silver Supporting Member
Posts: 923
50hotrod
Age: 60
Loc: Wisconsin
Reg: 07-25-11
02-07-18 11:08 PM - Post#2723719    
    In response to Dean50

  • Dean50 Said:
Thanks guys.
Butch, the manifold is Edelbrock and I think the number would be 5419. The center carb sits higher, like the old Pontiac 389 Tri-Power. I have always just assumed they were 389 Pontiac carbs for that reason. I've been trying to design a one-piece air filter for this, or put some stock Pontiac type filters on. I'll do more measuring on the four bolt bolt spacing, etc.
Thanks again everybody.





Charlie Price's Vintage Speed has a one piece air cleaner for a Tripower setup. Click the online catalog. http://vintagespeed.com/

You can also call Charlie. He's a bundle of knowledge when it comes to anything Tripower.



Well, you know what's wrong with the world today

People done gone put their Bible's away

They're living by the law of the jungle not the law of the land

"Simple Man" By Charlie Daniels



 
56sedandelivery 
Dedicated Enthusiast
Posts: 5271
56sedandelivery
Age: 66
Loc: Everett, Wa.
Reg: 02-26-08
02-08-18 01:36 AM - Post#2723722    
    In response to 50hotrod

  • 50hotrod Said:
Notice the difference in the fuel line connections between Chevy 2G and the Pontiac 2G.


^^^^^Those sure are pretty!!!^^^^^
I am Butch/56sedandelivery.




 
Dean50 
"11th Year" Gold Supporting Member
Posts: 1164
Dean50
Loc: Detroit area
Reg: 01-02-07
02-08-18 09:19 AM - Post#2723751    
    In response to 56sedandelivery

Found a serial number on the manifold - Edelbrock C362. Apparently from the 1960s for lowrise applications like early Corvette and the large Rochester 4 bolt carbs.
Butch - good to know about those valve covers for the future.

Dean50



 
carbking 
Senior Member
Posts: 1419
carbking
Loc: Missouri
Reg: 06-14-03
02-09-18 03:38 PM - Post#2723903    
    In response to Dean50

In the for what its worth category:

GUESSING!!!!!

Center carb 1976 Chevrolet 350 with modifications to choke.

Front carb 1959-1963 Pontiac tripower rear carb with modifications.

Rear carb 1959-1963 Pontiac tripower front carb with modifications.

As mentioned by others, aftermarket linkage.

Best I can do from the pictures.

Jon.

Good carburetion is fuelish hot air!

The most expensive carburetor you will ever buy.....is the incorrect one you attempt to modify!

If you truly believe "one size fits all", trying walking a mile in your spouse's shoes!


 
kzhurley 
Forum Newbie
Posts: 98
kzhurley
Age: 35
Loc: Millersburg,Ohio
Reg: 01-02-12
02-09-18 07:12 PM - Post#2723915    
    In response to carbking

  • carbking Said:
In the for what its worth category:

GUESSING!!!!!

Center carb 1976 Chevrolet 350 with modifications to choke.

Front carb 1959-1963 Pontiac tripower rear carb with modifications.

Rear carb 1959-1963 Pontiac tripower front carb with modifications.

As mentioned by others, aftermarket linkage.

Best I can do from the pictures.

Jon.


There you have it...
Very specific guess.. Lol


1950 Styleline Deluxe 2-door sedan..
348 tripower/NP833 4-Speed/3.73
1950 Styleline Deluxe 4-door..
Vortec 4200 I-6/4l60e/3.42/current project car
1956 Cadillac Coupe de Ville 500 efi/4l80e
1987 GMC R1500 Sierra Classic
454 tbi/700r4/3.42


Edited by kzhurley on 02-09-18 07:13 PM. Reason for edit: No reason given.

 
Dean50 
"11th Year" Gold Supporting Member
Posts: 1164
Dean50
Loc: Detroit area
Reg: 01-02-07
02-09-18 07:27 PM - Post#2723916    
    In response to carbking

Thanks a lot Jon!

Dean50



 
56sedandelivery 
Dedicated Enthusiast
Posts: 5271
56sedandelivery
Age: 66
Loc: Everett, Wa.
Reg: 02-26-08
02-10-18 02:24 AM - Post#2723926    
    In response to Dean50

Well, looks like I was wrong on several levels, but like I wrote, I was just "guessing". The C632 manifold is also for the larger base carbs.
I am Butch/56sedandelivery.




Edited by 56sedandelivery on 02-10-18 09:53 AM. Reason for edit: No reason given.

 
Dean50 
"11th Year" Gold Supporting Member
Posts: 1164
Dean50
Loc: Detroit area
Reg: 01-02-07
02-10-18 05:38 AM - Post#2723931    
    In response to carbking

Thanks again carbking and everyone else. I bought the carbs and manifold off Craigslist a few years ago as a unit. Had the manifold powdercoated and carbs rebuilt. Ran it for awhile on the center one only to get it sorted. Lots of fun when the outside barrels kick in. I have another issue with it since the camel hump heads were added but that's for another post after I check a couple things.

Dean50



 
Dean50 
"11th Year" Gold Supporting Member
Posts: 1164
Dean50
Loc: Detroit area
Reg: 01-02-07
02-10-18 02:46 PM - Post#2723977    
    In response to kzhurley

Carbking
Does it matter that the front and rear carbs positions are switched? Do you know the cfm of these carbs?
Thanks again!

Dean50



 
carbking 
Senior Member
Posts: 1419
carbking
Loc: Missouri
Reg: 06-14-03
02-10-18 06:36 PM - Post#2723990    
    In response to Dean50

Question 1 - with mechanical linkage, no.
Question 2 - depends on the RPM. The higher the RPM, the LOWER the CFM.

Jon

Good carburetion is fuelish hot air!

The most expensive carburetor you will ever buy.....is the incorrect one you attempt to modify!

If you truly believe "one size fits all", trying walking a mile in your spouse's shoes!


 
Dean50 
"11th Year" Gold Supporting Member
Posts: 1164
Dean50
Loc: Detroit area
Reg: 01-02-07
02-10-18 07:06 PM - Post#2723994    
    In response to carbking

Thanks a lot for all the information.

Dean50



 

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