1991 Chevy Camaro Replacing the engine

Tiny
THESHERM22
  • MEMBER
  • 1991 CHEVROLET CAMARO
  • V8
  • 2WD
  • MANUAL
  • 160,000 MILES
I just bought a 1991 camaro rs with a 305 tbi motor in it. However I am looking to put a Chevy 350 engine in it and I am wondering what I need to know in order to do it cleanly
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Wednesday, December 16th, 2009 AT 12:04 AM

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Tiny
ERNEST CLARK
  • EXPERT
You didn't say what year motor you have. (L-98, LT-1, etc.) But it will bolt in with no problems.

However, the tbi will have to be reprogrammed for sure.
If it's a LT-1 motor, then you'll need an all new computer, fuel injection, ignition control, etc.

If it's an L-98 motor, then all you'll need to do is reprogram the computer to compensate for the extra cubic inches.
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Sunday, January 3rd, 2010 AT 9:08 PM
Tiny
THESHERM22
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The 305 I have is stock in the 1991rs however I dont know what year the engine that comes with is and I have yet to buy a 350 I was just wondering what I would need to do it.

If I buy an lt1 I will have to basically reprogram everything to fit that type of engine but if I buy an l98 then I only have to reprogram the computer to fit the larger engine?
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Wednesday, January 6th, 2010 AT 12:19 AM
Tiny
ERNEST CLARK
  • EXPERT
If you were to by a 1991 L-98 350-cubic inch engine, then you could basically keep everything you have, but the computer would definitely have to be reprogramed.

It won't be able to compensate for the larger air/fuel demands of that motor.

Also, you may have to use larger injectors (Higher flowing) Other than that, small block motors of that era have completely interchangeable parts (External)

Now, it you buy an LT-1, you'll have to changed everything. You'll need to buy the computer, wiring harness, fuel and ignition system to go along with the motor.

Unless you are already familiar with that engine swap combo, I'd suggest you have a shop do an LT-1 swap.
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Wednesday, January 6th, 2010 AT 7:16 AM
Tiny
THESHERM22
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Ok thank you very much I appreciate the help.
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Thursday, January 7th, 2010 AT 3:49 AM

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