Hello Iam going to put mt TPI set up off my 91Z28 it has a 305 and Iam putting it on a 327. Which heads can I use for that year of block and what type of heads can I use? Can I use L98 heads??? Can I use LT1 heads??? I don't want to fool aroung with mating bolt patterns and ovaling the holes in the intake I want this to be as simple as possible. I live in a area where not to many people want to do custom things to intakes and heads. So any info would be really helpful. Thank you.

 

L98 heads would work. personally i don't think it's a very good combo. the tpi is good for low end power and the 327 is a high rpm engine. your induction will be mismatched to the engine.

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ICON Motorsports
1st & 3rd

 

ok got to thinking about it a little more, i've never done it and don't know any one that has, i believe you'd be ahead to ask around and find someone with a tpi 327 and se what they have to say about it.

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ICON Motorsports
1st & 3rd

 

The 327 isn't a high rpm engine per se. It's a slightly shorter stroke 350 is all. The reason this is a long standing misconception is because comparitively, the '60's hi-po 327's were built to RPM a little more than the 350's of later years.

build to your intake, heads and exhaust and choose cam wisely. It'll be a good motor, but it makes no sense to build a 327 if you can build a 350 instead. More stroke = more power, end of story.

Fast Burn, Vortec (L31), L98, and other 350 intended heads will work. Depends on what you wanna do...

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jmd
L69 / T5

 

Oops, sorry jmd, FastBurns and Vortecs will not work. He said he wants to keep his TPI, which won't match to those heads' ports.

I will agree that there is no reason a 327 TPI shouldn't work as long as the PACKAGE is designed correctly. If I had a 327 block sitting around, you can be sure it'd be going into the Camaro! (It does make sense to build one if you have the 327 but not a 350). Don't tell me 327's aren't torque motors - I've driven 12,000 lbs of farm truck with them, and believe me, they will produce torque!

The LT1 heads would not work because of a different port design. World Products, ARP, Canfield and others all have versions that would work. As for the center intake bolt angle, just ask for the correct type ('87-later) when you order.

One other thing (although you didn't ask): The 327 will have a two-piece rear main, while your 305 has a one-piece. So, you'll need a different flex plate/flywheel.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LB9 w/ZZ3 cam, TBD heads, exhaust, paint, etc.).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & shift kit, 3.08 10-bolt, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

 

I 100% agree. See https://www.thirdgen.org/messgboard/...ML/000368.html wherein I say "going with Mini-Ram + AFR's or Ram-jet intake + Fast Burns." I feel either is a viable option for this.

I learned to drive in a '66 Chevy w/ 4 speed, 2 range transfer case & a grain bed on back. Great to partake in a piece of history.

I know the water ports don't work, but how different are the actual intake ports? The exhaust are standard D-port, just like Vortec's.

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jmd
L69 / T5