LT1 carb swap I got a few questions
03-28-2009, 08:14 PM
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Car: 1991 firebird formula
Engine: 5.8
Transmission: 700r4
Axle/Gears: 3.42
LT1 carb swap I got a few questions
I have a few questions swapping an lt1 to a carb.
When looking for a manifold is the bolt pattern the same as the 86+ heads?
What do you do with the opti when you go HEI?
Dose an lt1 have timing tabs?
Thanks
When looking for a manifold is the bolt pattern the same as the 86+ heads?
What do you do with the opti when you go HEI?
Dose an lt1 have timing tabs?
Thanks
03-28-2009, 08:31 PM
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Car: 1992 camaro
Engine: LT1
Transmission: 4L60E
Axle/Gears: 3:73
Re: LT1 carb swap I got a few questions
You will get rid of the opti all together fab up something to cover up the hole or GM offers one to cover it up.
Most people that I have seen go to carb use the ATI balancer.
IMHO unless the motor is missing the FI set up you are better off with the FI or stay gen 1 and you have a lot more head and intake options.
03-28-2009, 09:49 PM
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Car: 1991 firebird formula
Engine: 5.8
Transmission: 700r4
Axle/Gears: 3.42
Re: LT1 carb swap I got a few questions
I just assumed that if people use LT1 intakes on their TPI motors does anybody know of any other intake manifolds other than the GM performance parts one.
03-29-2009, 08:34 AM
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Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
Re: LT1 carb swap I got a few questions
No, you have to use the GMPP manifold, I believe there is another company that makes one also. it would be easier to keep it EFI and cheaper if you have all the parts.
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