Pontiac Firebird 1970-1981


June 13, 2013 By Mike Lee
Last updated on July 31, 2015
Pontiac Firebird Formula 400 (1970)
Country
USA
Top Speed (mph)
123
0-50 mph
5.1
0-60 mph
6.4
1/4 mile
14.9
BHP
330 @4800rpm
Torque lbft
430 @3000rpm
BHP per ton
193
Engine capacity CC/CU
6555/400
Engine type
V8 Carburettor
Aspiration
Normal
Compression Ratio
10.3:1
Valve Type/No
Overhead 16
Transmission (manual/auto)
Automatic
No of speeds
3
Wheels driven
RWD
Brakes F/R
Disc/Drum
No. of Seats
2+2
Length (in)
191.6
Width (in)
73.4
Height (in)
50.4
Kerb Weight (lbs)
3760
Additional Info: The 400 was available with different power ratings, such as, 265bhp, 330bhp, 335bhp (HO), 345bhp (Ram Air II), 370bhp (Ram Air IV) and a 500bhp Ram Air V. The Ram Air IV did 60 in 5.6 secs and a 1/4 mile in 13.9 secs. 1972 got a 455cu with 325bhp and a 455 HO with 335 bhp. Net horsepower from 1972 gave 250bhp for the 400cu and 300bhp for the 455cu. 1973 got a 150bhp 350cu, with the 400cu now at 230bhp, the 455cu at 250bhp and a 455 SD (Super Duty) with 310bhp (1/4 mile in 13.5 secs). 1974 similar to 1973. 1975/76 saw a big drop in power and no 455 SD. In 1977 the 455 was dropped and new a 301/305 was introduced. Note the changes made to the bumpers, front and rear end, lights and general bodywork trim, which went through a number of changes over the 2nd gen’s production run.

 

Pontiac Firebird Trans Am (1978)
Country
USA
Top Speed (mph)
N/A
0-60 mph
6.5
1/4 mile
15.3
BHP
220 @4000rpm
Torque lbft
320 @2800rpm
BHP per ton
131
MPG UK/US
19/16
Engine capacity CC/CU
6555/400
Engine type
V8 Carburettor
Aspiration
Normal
Compression Ratio
8.1:1
Valve Type/No
Overhead 16
Transmission (manual/auto)
Manual
No of speeds
4
Wheels driven
RWD
Brakes F/R
Disc/Drum
No. of Seats
2+2
Length (in)
196.8
Width (in)
73
Height (in)
49.5
Kerb Weight (lbs)
3685
Additional Info: The 301/305 has 135bhp, the 350 has 155bhp, 400 has 185-220bhp (185bhp covers the 1/4 mile in around 16 secs). A 185bhp 403cu Olds engine was also used and could get to 60 in around 9 secs and cover the 1/4 mile in around 16.4 secs). A 1976 455cu has around 200bhp and gets to 60 in around 8.4 secs and the 1/4 mile in 15.9 secs.

 

Pontiac Firebird Trans Am Turbo (1980)
Country
USA
Top Speed (mph)
110
0-60 mph
9
1/4 mile
17.3
BHP
210 @4000rpm
Torque lbft
345 @2000rpm
BHP per ton
124
Engine capacity CC/CU
4932/301
Engine type
V8 Carburettor
Aspiration
Turbocharged
Compression Ratio
7.6:1
Valve Type/No
Overhead 16
Transmission (manual/auto)
Automatic
No of speeds
3
Wheels driven
RWD
Brakes F/R
Disc/Drum
No. of Seats
2+2
Length (in)
198.1
Width (in)
73
Height (in)
49.3
Kerb Weight (lbs)
3730
Additional Info: The 400cu was dropped.

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