1990 Formula engine options
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From: AA County, MD
Car: 1990 Firebird Formula
Engine: 305 TBI
Transmission: 700R4
1990 Formula engine options
I am about to buy a 1990 Firebird Formula and I was wondering if Formulas only came with TPI as opposed to TBI? The way I read the 1990 Firebird Tech Data on this site (https://www.thirdgen.org/1990-pontiac-firebird?) , they only came with TPI.
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: 1990 Formula engine options
From 1988 thru 1992 the base engine was the TBI engine on the FORMULA. The Trans Am from 1988 & 1989 the base engine was the TBI, but I believe it was in 1990 that the TA was only available with the 5.0 TPI like the camaro IROC & Z28.
The Formula could have gotten the 5.0 TPI, or the 5.7 TPI,
In 1990 then:
V6 - (s) Firebird
LO3 (305 TBI)- (s) FORMULA, (o) Firebird
LB9 (305 TPI) - (s) Trans Am, (o) Formula & GTA
L98 (350 TPI) - (s) GTA, (o) Formula & Trans Am.
Hope that helps.
JOhn
The Formula could have gotten the 5.0 TPI, or the 5.7 TPI,
In 1990 then:
V6 - (s) Firebird
LO3 (305 TBI)- (s) FORMULA, (o) Firebird
LB9 (305 TPI) - (s) Trans Am, (o) Formula & GTA
L98 (350 TPI) - (s) GTA, (o) Formula & Trans Am.
Hope that helps.
JOhn
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