5.0 tpi to 5.7 swap
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Joined: Aug 2006
Posts: 71
Likes: 3
From: Pennsylvania
Car: 1991 Z28 (sold), 1987 Buick GN
Engine: L98 TPI, bored 0.040 over
Transmission: TH350, 2400 stall, shift kit
Axle/Gears: 10 bolt w/eaton locker, 3.42 gears
5.0 tpi to 5.7 swap
Does anyone know if a 1987-1995 350 TBI engine will run properly if installed in my 1991 Z28 which is currently a 5.0 TPI. I want to keep the TPI setup, but I'm not sure if the speed density system would allow the engine to run properly. I know I might have to change the injectors, and prom chip, which is not a problem. Will the stock TBI cam effect this setup? Please help I don't know much about TPI MAP systems.
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
Put a 350 TPI engine in it, put in 22 lb injectors, change the knock sensor and module to 350 pieces, put in a 350 TPI PROM, and it will run just fine.
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