kingeak
Forum Newbie
Posts: 14
Reg: 05-22-12
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06-15-12 05:54 PM - Post#2237604
Is anyone aware of any 62-65 409 motors that were rated <300 HP? I have my 409/425 (or so I thought when bought at auction).
I have my 63-409 at a repair shop and am being told this particular motor although it's a true 409, the HP rating is ~250 HP. Apparently he's looked up some of the engine ID's, (casting ID's??) and determined this is a "dealer replacement motor" from the mid 60's?
Something sounds "weird" aboout this and I was hoping to gain some additional knowledge prior to picking up the car on Monday.
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 dcairns
"4th Year" Silver Supporting Member
Posts: 1531
Loc: Orange CA
Reg: 11-07-03
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06-15-12 05:58 PM - Post#2237606
In response to kingeak
Lots of info here
http://www.348-409.com/general.html
Short answer, there were 348's with less than 300 hp, but the lowest 409 was 340 hp
Edited by dcairns on 06-15-12 06:06 PM. Reason for edit: No reason given.
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Mad Joe
Contributor
Posts: 391
Loc: Wichita Falls, Tx.
Reg: 05-09-07
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06-15-12 06:01 PM - Post#2237607
In response to kingeak
Never heard of it before. 340 HP 409, yes. 250 or 300 Hp, don't believe so. 340 horsepower is the lowest I'm aware of. 348 engines which look like 409 engines might be that low.
The "pros" will be here soon to give you better advice.
What did the shop find wrong with the engine? I believe you said earlier it had very little power.
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 Carl1962
Silver Supporting Member
Posts: 582
Loc: Australia
Reg: 04-01-10
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06-15-12 06:40 PM - Post#2237618
In response to Mad Joe
Maybe it's a truck motor, weren't they rated lower?
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bfnjz52
Contributor
Posts: 107
Loc: Bear, DE
Reg: 05-06-07
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06-15-12 06:44 PM - Post#2237621
In response to kingeak
It could be a truck block with 690 or 583 heads and dual quad intake. That's not a bad thing although people will disagree with me. What are the numbers stamped on the pad at the front of the engine?
Dick MacKenzie
62 Impala Super Sport 327/300 hp
62 Impala Sport Coupe 409/409 hp
62 Belair Sport Coupe 409/+ or - 600 hp |
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Mad Joe
Contributor
Posts: 391
Loc: Wichita Falls, Tx.
Reg: 05-09-07
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06-15-12 07:16 PM - Post#2237628
In response to Mad Joe
You may be right. I didn't consider truck engine.
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 Richard Martin
Valued Contributor
Posts: 4314
Loc: Davis Islands, Florida
Reg: 06-12-03
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06-15-12 08:04 PM - Post#2237644
In response to kingeak
My '65 heavy duty truck brochure lists a 252 horsepower 409 that was in the C80 series trucks. The c.r. is 7.75:1
Richard
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kingeak
Forum Newbie
Posts: 14
Reg: 05-22-12
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06-16-12 03:08 AM - Post#2237721
In response to Richard Martin
I'll confirm Monday, but it appears (based on the codes) it may be a 409 truck motor rated at 252 HP.
As far as the "no power" issue, the carbs (dual quads) were both in need of a rebuild. They were leaking gas into the manifold and basically flooding the engine. Compression test performed and all checked out fine (no head gasket issues).
I'm trying to find additional info on why a 252HP rated motor would have (2) 4 bbl carbs (Carter AFB).
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arnieg141
Dedicated Enthusiast
Posts: 6084
Loc: nj
Reg: 10-06-08
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06-16-12 04:32 AM - Post#2237731
In response to kingeak
Is anyone aware of any 62-65 409 motors that were rated <300 HP? I have my 409/425 (or so I thought when bought at auction).
I have my 63-409 at a repair shop and am being told this particular motor although it's a true 409, the HP rating is ~250 HP. Apparently he's looked up some of the engine ID's, (casting ID's??) and determined this is a "dealer replacement motor" from the mid 60's?
Something sounds "weird" aboout this and I was hoping to gain some additional knowledge prior to picking up the car on Monday.
alot of guys in late 60's would swap the oil pans on the 348 motor to make it look to be a 409. the only real diff . on looks was dip stick on had on the passanger side the other the drivers side
| GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison |
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bfnjz52
Contributor
Posts: 107
Loc: Bear, DE
Reg: 05-06-07
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06-16-12 11:57 AM - Post#2237851
In response to arnieg141
Is anyone aware of any 62-65 409 motors that were rated <300 HP? I have my 409/425 (or so I thought when bought at auction).
I have my 63-409 at a repair shop and am being told this particular motor although it's a true 409, the HP rating is ~250 HP. Apparently he's looked up some of the engine ID's, (casting ID's??) and determined this is a "dealer replacement motor" from the mid 60's?
Something sounds "weird" aboout this and I was hoping to gain some additional knowledge prior to picking up the car on Monday.
alot of guys in late 60's would swap the oil pans on the 348 motor to make it look to be a 409. the only real diff . on looks was dip stick on had on the passanger side the other the drivers side
Good point. You probably want to check the casting number to see if you have a 409 or 348.
Dick MacKenzie
62 Impala Super Sport 327/300 hp
62 Impala Sport Coupe 409/409 hp
62 Belair Sport Coupe 409/+ or - 600 hp |
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arnieg141
Dedicated Enthusiast
Posts: 6084
Loc: nj
Reg: 10-06-08
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06-16-12 12:37 PM - Post#2237865
In response to bfnjz52
true i ran the 348 pan on my 409 for street raceing to get an edge 
| GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison |
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too many chevys
Contributor
Posts: 233
Age: 55
Loc: south central Mo.
Reg: 06-06-09
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06-17-12 05:45 AM - Post#2238148
In response to Richard Martin
My 65 C-80 is rated at 252 in the books but the data plate in the cab says 215. I think the cab plate is referring to brake horsepower. The 409 in my 63 Impala was a truck block also and the suffix code is QD. The easy way to tell a truck block is by the chamfered lip in the top of the cylinder.
Mearl
'65 Chevelle SS convertible, '65 C-10 shortbed
'67 Camaro RS, '68 corvair
'65 C-80 tractor (409)
'63 Impala 409, 4spd.
'72 Nova, '55 Belair 2dr post
'72 Corvette
Never time to do it right, always time to do it over. |
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Richard Martin
Valued Contributor
Posts: 4314
Loc: Davis Islands, Florida
Reg: 06-12-03
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06-17-12 08:15 AM - Post#2238206
In response to too many chevys
The easy way to tell a truck block is by the chamfered lip in the top of the cylinder.
Like this block:
http://www.ebay.com/itm/280900146029?ssPa geName=ST...
Richard
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Mad Joe
Contributor
Posts: 391
Loc: Wichita Falls, Tx.
Reg: 05-09-07
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09-08-12 10:17 PM - Post#2267899
In response to kingeak
Checking previous threads from the summer and wondered if you got the engine situation worked out?
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