Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

L98 to LS1, or LS6

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Old 07-27-2001, 08:02 PM
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L98 to LS1, or LS6

Hey guys, has ANYONE did a LS1 swap in a third gen, or does anyone have sites where i can go look at? I am pretty determained to do this, so if u tell me it can't be done, i'll just spend a few years then it'l get done. any tips or anything? This way i can get the best of both Gens. also, will my tranny bolt up.

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88' GTA 350 MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass
Old 07-27-2001, 09:50 PM
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Car: C1500
Engine: 350
Transmission: 700r4
Axle/Gears: 2.73
Your tranny won't bolt up. Your motor mounts won't work with it, nothing will. It will almost be like putting a ford motor in it. Only it won't suck like a ford motor would. This guy has a lot of info about this swap. http://www.fbody.com/members/bradkiel/



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1989 Pontiac Firebird Formula LO3 Auto
-180 degree stat
-Hooker Cat-Back
-velcro t-top bag
-Wonder Bar from my IROC
Waiting for install: Open element 14x3, 95 vette lt1 cam

*****Possible future mods*****
4th gen seats, fiberglass spoiler, rear disc, 3.42, torsen(posi), Edlebrock Performer TBI intake, headers, y-pipe and cat, afpr

1985 IROC-Z, TPI Auto
-Accel Super Coil
engine and tranny overhauls coming this summer


http://www.geocities.com/krt80/
Old 07-27-2001, 10:01 PM
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so in other words, i should wait a few years, (im only 16) and find someone with experience, and plan on a whole lot of welding etc.

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88' GTA 350 MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass
Old 07-28-2001, 12:01 PM
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Car: Death Mobile
Engine: 666 c.i.
You will need the transmission, ecm and wiring harness from the donor car and then do a whole lot of fabricating for motor mounts and cross-members.

You have to think of the swap as a "system". And if the LS1/LS6 has other sensors, you will have to consider those too. I am not "up" on my LS1/LS6 ECM (actually PCM), but they check a heck of a lot more than our cars due to OBD II and other features that GM has installed on the newer PCMs. You need to do research in that area.
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