Pontiac Fiero Engines by Year

The Fiero was Pontiac's mid-engine two-seater, built for 1984–1988. The fuel-injected 2.5 four was the only engine for 1984; the 2.8 V6 arrived for 1985 in the GT.

Pick a year to see every engine offered that model year, with its code, rated horsepower and the trims it came in. Each engine links to its full specs.

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Fiero (1984–1988): 1984 · 1985 · 1986 · 1987 · 1988

Fiero (1984–1988)

The 2.5 four and, from 1985, the 2.8 V6.

1984 Fiero engines

Engine	Rated	Offered in
2.5L / 151 inline-four (LR8)	—	Coupe, Sport Coupe, SE

1985 Fiero engines

Engine	Rated	Offered in
2.5L / 151 inline-four (LR8)	92 hp net	Coupe, Sport Coupe, SE
2.8L / 173 V6 (L44)	140 hp net	GT (standard, from Jan 1985), Sport Coupe (optional), SE (optional)

1986 Fiero engines

Engine	Rated	Offered in
2.5L / 151 inline-four (LR8)	92 hp net	Coupe, Sport Coupe, SE
2.8L / 173 V6 (L44)	—	GT (standard; new fastback body), SE (optional), Sport Coupe (optional)

1987 Fiero engines

Engine	Rated	Offered in
2.5L / 151 inline-four (LR8)	98 hp net	Coupe, Sport Coupe, SE
2.8L / 173 V6 (L44)	135 hp net	GT (standard), SE (optional)

1988 Fiero engines

Engine	Rated	Offered in
2.5L / 151 inline-four (LR8)	98 hp net	Coupe
2.8L / 173 V6 (L44)	135 hp net	GT (standard), Formula (standard)

Working on one of these engines?

• Engine displacement from bore and stroke
• Static and dynamic compression ratio
• Which camshaft for your build
• What size carburetor
• Horsepower to torque at any RPM
• Torque converter stall speed

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