carburation manifold info request
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Joined: Dec 2012
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From: Newman Lake Wa
carburation manifold info request
Hi
This is my first attempt at this so bear with me. I just purchased a '74 T Top. The car came with an amazing collection of upkeep receipts showing routine maintenance including a carburator rebuild from the first owner. The second owner bought it from a dealer after trade in. She only did fluid service for the twelve years she had it. I have discovered it has an Edelbrock 1902 carburator 750cfm and a GM 340281 intake manifold. I have found that this was used 82 to 85 on Camaros. I can't find out whether or not is a higher rise than the stock intake from 1974.
Anyone know if it is a higher performance manifold and what does it do to engine performance. The engine is the standard 195 hp as far as I can tell, though I can't see the engine number under the compressor. Other threads have indicated that this is a higher than neessary carburator. I would appreciate anything I can find out. I suspect the dealer put these on as I can't find a receipt.
Thanks,
Ray.
This is my first attempt at this so bear with me. I just purchased a '74 T Top. The car came with an amazing collection of upkeep receipts showing routine maintenance including a carburator rebuild from the first owner. The second owner bought it from a dealer after trade in. She only did fluid service for the twelve years she had it. I have discovered it has an Edelbrock 1902 carburator 750cfm and a GM 340281 intake manifold. I have found that this was used 82 to 85 on Camaros. I can't find out whether or not is a higher rise than the stock intake from 1974.
Anyone know if it is a higher performance manifold and what does it do to engine performance. The engine is the standard 195 hp as far as I can tell, though I can't see the engine number under the compressor. Other threads have indicated that this is a higher than neessary carburator. I would appreciate anything I can find out. I suspect the dealer put these on as I can't find a receipt.
Thanks,
Ray.
Le Mans Master
Joined: Aug 2010
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From: Central Texas
I had an 82 Z28 Camaro. It had throttle body injection from the factory. Not a carburetor and regular intake. You can search that manifold number on the internet and find more info. Good luck.
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From: MISSISSAUGA ONTARIO
You should be able to read the casting number on the block even with the compressor there.I have a 74ac car ,I used a flashlight and magnifying glass if the code is J its the base L48 I to have the edelbrock carb that I inherited from the previous owner mine is a 600 works really well but I wish he left the quadrajet there
Le Mans Master
Joined: Oct 2002
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From: Las Vegas - Just stop perpetuating myths please.
Performance is Ok with those manifolds but not a high rise.
There were no aluminum intakes for the sb chevy in the mid 70's. An 80's camaro alum intake swap is a good choice to get a factory GM alum intake.
The only stock sb "high rise" was on the late 60's and early 70's LT1's. These were for square bore Holley carbs and would not fit your "spread bore" quadrajet. But GM performance still sells an cast iron "LT1" intake that with fit both spreadbore and squarebore carbs if u are interested and yes this would be an performance improvement though weight several pounds more.
Have fun,
cardo0
The only stock sb "high rise" was on the late 60's and early 70's LT1's. These were for square bore Holley carbs and would not fit your "spread bore" quadrajet. But GM performance still sells an cast iron "LT1" intake that with fit both spreadbore and squarebore carbs if u are interested and yes this would be an performance improvement though weight several pounds more.
Have fun,
cardo0
Team Owner
Joined: Jan 2006
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From: Crossville TN
The Edelbrock #1902 is a suitable replacement for the original Quadra-Jet carb. #1902 is a Q-Jet from Edelbrock after Rochester sold the equipment and the rights to that carb to them. It may not be identical to what was there from the factory, but the basic carb is the same.
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Joined: Dec 2012
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From: Newman Lake Wa
Thanks for the responses. The number is definitely a 340281, just rechecked the photo.
The internet says the 61 is a low rise, but nothing about the 81. I'm glad the carb is close to stock. I have dynomometer results from the first owner that show poor gas feed to several cylinders. The car has a lot more low end grunt than my L82. I don't have any experience with the L48.
Ray
The internet says the 61 is a low rise, but nothing about the 81. I'm glad the carb is close to stock. I have dynomometer results from the first owner that show poor gas feed to several cylinders. The car has a lot more low end grunt than my L82. I don't have any experience with the L48.
Ray
Melting Slicks
Joined: Feb 2006
Posts: 3,428
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From: Japan
C3 Corvettes of all years came with low-rise intakes NOT because GM wanted to restrict output but because there wasn't adequate hood clearance. The big block cars and LT1's were exceptions, but typically that is the limiting factor with these cars-if you want to open up your options here you need a hood with a little more clearance.
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Thread Starter
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Joined: Dec 2012
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From: Newman Lake Wa
Thanks again,
Located engine casting numbers and they are appropriate to the car so I assume that the carb and manifold are the only non stock components. I appreciate the input.
Ray
Located engine casting numbers and they are appropriate to the car so I assume that the carb and manifold are the only non stock components. I appreciate the input.
Ray