4th gen TPI?
Thread Starter
Registered User
Joined: Oct 2002
Posts: 1,867
From: Drexel Hill, Pa
4th gen TPI?
Has anyone ever heard of anyone putting a tpi engine in 4th gen? What would be involved in tearing out the 3.4 and putting the engine and trans out of my iroc? I have an offer of $1100 for the engine and trans out of my third gen if i decide to sell it.
Registered User
Joined: Jul 2003
Posts: 1,025
From: usa
simply put I have never heard of anyone doing that swap.Can it be done yes.I have seen everything between the fenders of 4th gen's turbo v6's supercharged v6', the same for v8's,carbed big blocks,carbed small block's,fi big blocks.etcetc but never a tpi,the closest was an accell pizza box intake on a lt1
Registered User
Joined: Mar 2003
Posts: 1,240
From: Markham, ON
i dont see why not if you got lt1 engine mounts put in there if the lt1 is a bolt in for us then an l98 must be a virtual bolt in to them. If it works one way dont see why it wouldnt work the other.
Registered User
Joined: Jul 2001
Posts: 687
From: Las Vegas, NV
You do realize that it will barely fit in there I hope. The motors in the 4th gens sit farther back in the chassis, and half of the thing is under the cowl (the part and the bottom of the windshield) or whatever it's called. Your going to have to do some beating on the firewall to cram the thing in there. Even after you do get it in, have fun getting to the rear mounted distributor! 
It's way to much work to be worth it. Just find a running LT1 and swap it un, unless you have plenty of time and money.
It's way to much work to be worth it. Just find a running LT1 and swap it un, unless you have plenty of time and money.
Registered User
Joined: Mar 2003
Posts: 1,240
From: Markham, ON
Originally posted by Ace_437
You do realize that it will barely fit in there I hope. The motors in the 4th gens sit farther back in the chassis, and half of the thing is under the cowl (the part and the bottom of the windshield) or whatever it's called. Your going to have to do some beating on the firewall to cram the thing in there. Even after you do get it in, have fun getting to the rear mounted distributor! It's way to much work to be worth it. Just find a running LT1 and swap it un, unless you have plenty of time and money.
You do realize that it will barely fit in there I hope. The motors in the 4th gens sit farther back in the chassis, and half of the thing is under the cowl (the part and the bottom of the windshield) or whatever it's called. Your going to have to do some beating on the firewall to cram the thing in there. Even after you do get it in, have fun getting to the rear mounted distributor!
It's way to much work to be worth it. Just find a running LT1 and swap it un, unless you have plenty of time and money.
Registered User
Joined: Jul 2001
Posts: 687
From: Las Vegas, NV
Originally posted by doug791
well the issue is he just wrecked his l98 car and just bought a v6 4th gen so he has a motor he could put in. If you do have the time i think itd be a really cool swap.
well the issue is he just wrecked his l98 car and just bought a v6 4th gen so he has a motor he could put in. If you do have the time i think itd be a really cool swap.
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Joined: Apr 2000
Posts: 1,677
From: T-town
Clearance is going to be a HUGE issue. The TPI setup is a lot taller than an LT1 intake, and if you've ever worked on a 4th gen you know that's a tight fit. I'd be very surprised if a TPI would fit under the cowl without SERIOUS modification, i.e. modified motor mounts to lower the enitre engine and a lot of firewall clearance work and hacking the cowl. I personally just don't think it would be worth the trouble.
