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lt1 heads???

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Old Jan 11, 2005 | 10:23 PM
  #1  
mcwille's Avatar
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From: Ortonville, Michigan
Car: 1987 Trans am 5.7 TPI
Engine: 5.7 TPI
Transmission: 700R4
lt1 heads???

i have a stock 350 TPI if i can get a set of aluminum heads off an lt1 can i use them with my tpi????
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Old Jan 11, 2005 | 11:14 PM
  #2  
FactoryFreak's Avatar
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From: Lincoln, NE
Car: 1988 GTA
Engine: 350 TPI
Transmission: TH350
no, they are set up for reverse coolant flow
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Old Jan 11, 2005 | 11:22 PM
  #3  
mcwille's Avatar
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From: Ortonville, Michigan
Car: 1987 Trans am 5.7 TPI
Engine: 5.7 TPI
Transmission: 700R4
what if i had a reverse pattern water pump would they still work with my intake, computer, and block?? other than the coolent flow because right off the bat i have that solved my buddy has a pump he can't use with the serpintine setup because it flows the wrong way....
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Old Jan 12, 2005 | 10:13 AM
  #4  
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From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Originally posted by mcwille
what if i had a reverse pattern water pump would they still work with my intake, computer, and block?? other than the coolent flow because right off the bat i have that solved my buddy has a pump he can't use with the serpintine setup because it flows the wrong way....
You are confused. SBC engines used normal rotation/flow water pumps for the last 1000 years. When the serpentine system was introduced on our 3rd gens it uses the same pump flow but the impeller spins reverse. This is what they call reverse rotation/normal flow pumps.

The LT1 uses reverse FLOW pump. Totally different from "normal" SBC (Gen 1) and unique to Gen 2 SBC.

If you want to use LT1 heads on a Gen 1 SBC then here's a link for what to expect.
http://www.lt1intake.com/LT1_retrofit.htm
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Old Jan 12, 2005 | 11:06 AM
  #5  
KiLLJ0Y
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not to mention the LT1 heads are 54cc


you can get the LT1 heads modified for the coolant passages of the gen1 SBC if you really need/want them. but you'll have to deal with the 54cc of the heads.

L98 Aluminum corvette heads are 58cc and the iron version's are 64cc

so depending on what pistons and gasket you are using will give you an idea on what compression you will see.
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Old Jan 12, 2005 | 11:29 AM
  #6  
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
Sure its possible. I don't know if anyone on the boards has actually got it set up and running yet. Both me and TPI_ROC are working on our own setups with LT1 heads and LT1 intake. He is a bit further along than I, but he hasn't done much on it in the last 8 months or so. Hopefully I'll be finishing mine in the next 3-4 months, and hopefully he finishes before me so I know what problems to look out for

My design isn't very easy though. It requires re-locating most of the accessories and won't work with air conditioning or a conventional AIR(smog) pump.

Also requires you to use an LT1 intake. I'm sure you could get a TPI re-drilled for LT1 mounting, but honestly there's no sense. For the money/time you'll spend on that, you're better off just buying a set of aftermarket aluminum heads. I only went this route because I was going to go the LT1 intake route. Honestly, if I had stayed on that route, I would've been done a long time ago. This head conversion isn't the quickest/easiest job in the world and takes time to acquire all of the little parts here and there and finding someone you can trust to weld aluminum heads.

I figure I have about another $600 left in the project, including headers, gaskets, and a bit more machinework. Now that I'm out of school for 7-8 months, and should be working a lot more as well as have more time to myself/car, I should get this done on schedule to be running at the track this year. Once I finish this project, then its time to install the 3.42 gears in the back. Then its time to do something about the transmission (either T5, T56, or rebuild my 700R4 and buy a new t/c).

Anyways, when I finish this conversion, I'll definitely do some sort of a writeup, more than likely, hopefully in conjunction with TPI_ROC.
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Old Jan 12, 2005 | 03:27 PM
  #7  
mcwille's Avatar
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From: Ortonville, Michigan
Car: 1987 Trans am 5.7 TPI
Engine: 5.7 TPI
Transmission: 700R4
i was just wondering because i think i can get a good set of lt1 heads for dirt cheap my buddy is upgrading his lt1 and i could get his stock heads and anything would be an improvment on my stock 350 heads
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