V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

Top Speed?

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Old 05-06-2018, 10:39 AM
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Car: 1987 Firebird
Engine: 2.8L V6
Transmission: 700r4
Top Speed?

Ive got a 1987 Firebird 2.8l MPI and I was wondering what the top speed for these cars are?
Old 05-06-2018, 12:22 PM
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: Top Speed?

Not much, lol
If everything is in tip top shape you might be able to hit 110...downhill with a tail wind.
Old 05-06-2018, 02:04 PM
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Car: Firebird
Engine: 5737cc
Transmission: 700R4
Re: Top Speed?

Originally Posted by //<86TA>\\
Not much, lol
If everything is in tip top shape you might be able to hit 110...downhill with a tail wind.
kinda like the v8 I see lol

You can get 120mph out of them ,I managed to pull that on autobahn with a 2.8 5 speed manual.Maybe its easier with manual but it can be done.
Old 05-06-2018, 11:10 PM
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Re: Top Speed?

Most of the EFI cars without speed rated tires (V or Z) were limited at 115mph +/-. Most of the auto cars will get up to about 120-130mph before the 700R4 will downshift to 3rd and rev the **** out of the engine. Tons of exaggeration about top speeds on the forum.
Old 05-07-2018, 06:18 AM
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Car: 88 T firebird
Engine: 2.8
Transmission: t5
Re: Top Speed?

My low 88 manual has hit 122mph.
110 was easy then a long pull up.
Old 05-15-2018, 02:11 PM
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Car: 1985 Firebird
Engine: 3.4 turbo
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Re: Top Speed?

my speedometer only goes to 85 but I've hit the H in MPH lol
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