LT-1 intake or??
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Pro
Joined: May 2010
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From: Vernon Hills Ill
LT-1 intake or??
Just picked up a 74 L-82 project car (thread in general section) the intake is from a 71-72 LT-1 with an adapter for a holley spread bore. It's been a while since Iv'e had a carborated engine. Is this still a decent manifold or am I better off with the original or a newer design such as the performer rpm? Thanks in advance, John 
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the problem is the adaptor, decide which way you want to go spreadbore based carburetor or square bore. You dont mention which Holley spread bore is on the car now. It's strange that they would go from an aluminum L-82 to an aluminum LT-1 manifold, are you sure the engine is an L-82?
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Pro
Joined: May 2010
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From: Vernon Hills Ill
the problem is the adaptor, decide which way you want to go spreadbore based carburetor or square bore. You dont mention which Holley spread bore is on the car now. It's strange that they would go from an aluminum L-82 to an aluminum LT-1 manifold, are you sure the engine is an L-82?
Last edited by Bronze85; Nov 3, 2015 at 12:21 PM.
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From: Vernon Hills Ill
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I would definitely stick with the intake you have. I have a '72 LT-1 with a new 750cfm Holley and its a really smooth, strong pairing.
Not sure what hood you have on there but I seem to remember that the LT-1 / Holley combination won't fit under a standard hood. LT-1's had a cowl induction hood to accommodate the taller combination of carb / intake. I could be wrong and it may fit just fine, but I think I remember reading it somewhere.
Not sure what hood you have on there but I seem to remember that the LT-1 / Holley combination won't fit under a standard hood. LT-1's had a cowl induction hood to accommodate the taller combination of carb / intake. I could be wrong and it may fit just fine, but I think I remember reading it somewhere.
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From: Citrus Hills, Florida
I would definitely stick with the intake you have. I have a '72 LT-1 with a new 750cfm Holley and its a really smooth, strong pairing.
Not sure what hood you have on there but I seem to remember that the LT-1 / Holley combination won't fit under a standard hood. LT-1's had a cowl induction hood to accommodate the taller combination of carb / intake. I could be wrong and it may fit just fine, but I think I remember reading it somewhere.
Not sure what hood you have on there but I seem to remember that the LT-1 / Holley combination won't fit under a standard hood. LT-1's had a cowl induction hood to accommodate the taller combination of carb / intake. I could be wrong and it may fit just fine, but I think I remember reading it somewhere.
I was lucky enough to find a date correct/application correct Holley for my car. The base plate of that Holley was not as thick as the generic replacement on the car when I got it. Once I got the new carb and stock LT-1 air cleaner and fuel line installed I had no clearance problems. You can check your hood clearance with either balled up clay OR aluminum foil in a ball. Sorry for the long post but hope this helps the OP in getting things right.
BTW that intake and carb combo is strong. In the past I used an LT-1 intake on my 58 w/stock 283 and a performer carb...that too ran strong. Good luck with the fitment.
Fred
Last edited by vettefred; Nov 7, 2015 at 09:20 PM.
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