LG4 swap to L83
Thread Starter
Joined: Jan 2008
Posts: 53
Likes: 1
From: Paris
Car: 1983 Trans Am MSE
Engine: LG4
Transmission: TH700R4
Axle/Gears: 10 bolts 3.73
LG4 swap to L83
Hi
i have a 1986 trans am with a 305 LG4 but i want a 350 or more, i have found a L83 from a 1984 corvette so i want to swap it into the trans am and swap the crossfire to a tpi .
is it possible
i have a 1986 trans am with a 305 LG4 but i want a 350 or more, i have found a L83 from a 1984 corvette so i want to swap it into the trans am and swap the crossfire to a tpi .
is it possible
TGO Supporter
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: LG4 swap to L83
Very possible. Under the intake manifold, its still just a small block Chevy.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If the cylinder walls are extremely clean, you can do that. The typical 3.75" stroke kit includes pistons that are .030" oversize, because the typical block used for this exercise needs a clean-up overbore. That bumps the displacement to 383 cubic inches.
Thread Starter
Joined: Jan 2008
Posts: 53
Likes: 1
From: Paris
Car: 1983 Trans Am MSE
Engine: LG4
Transmission: TH700R4
Axle/Gears: 10 bolts 3.73
Re: LG4 swap to L83
yes, if the cylinder are not in good shape i will overbored to 4.030" with a 3.75 crankshaft to do a 383 .
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Hello, Michael
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