1986 pontiac firebird trans am 5.0L V8 F/I
02-04-2016, 02:18 PM
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1986 pontiac firebird trans am 5.0L V8 F/I
as many of you know, the 86 trans am is garbage. mine is bone stock, not so fast at all.
thinking about putting a cold air intake on it, what else can i do to increase its 0-60 time?
thinking about putting a cold air intake on it, what else can i do to increase its 0-60 time?
02-04-2016, 07:56 PM
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Car: 88 IROC Z/28-under re-construction
Engine: 5.7 Tuned Port
Transmission: It's in there....
Axle/Gears: 9 bolt Borg-Warner
Re: 1986 pontiac firebird trans am 5.0L V8 F/I
"That's whaughtumtalkinBOUT!"
02-04-2016, 11:33 PM
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Car: 1988 Camaro
Engine: 355, 10.34:1, 249/252 @.050", IK200
Transmission: TH-400, 3500 stall 9.5" converter
Axle/Gears: Ford 9", detroit locker, 3.89 gears
Re: 1986 pontiac firebird trans am 5.0L V8 F/I
Change the rear end/gear ratio will get you the biggest seat of pants improment for your money.
You can buy a complete rear end for $100-300, it only takes a couple of hours to swap whole rear ends.
Your car came with a 2.73 rear gear. Go to a 3.42 or 3.73 and it will feel like you added a supercharger to the car lol
One of the test I remember reading was car craft. They took a mustang with a 5.0L engine and done some testing/swapping.
Car had 2.80 gear ratio. Ran 14.921 @ 96.02 in 1/4 mile
Swapped in 3.25 gears and ran 14.276 @ 97.32
Shaving over .6 seconds off your ET is a BIG gain that you will feel
You can buy a complete rear end for $100-300, it only takes a couple of hours to swap whole rear ends.
Your car came with a 2.73 rear gear. Go to a 3.42 or 3.73 and it will feel like you added a supercharger to the car lol
One of the test I remember reading was car craft. They took a mustang with a 5.0L engine and done some testing/swapping.
Car had 2.80 gear ratio. Ran 14.921 @ 96.02 in 1/4 mile
Swapped in 3.25 gears and ran 14.276 @ 97.32
Shaving over .6 seconds off your ET is a BIG gain that you will feel
02-05-2016, 11:44 AM
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Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: 1986 pontiac firebird trans am 5.0L V8 F/I
auto trans or 5 spd?
02-05-2016, 12:03 PM
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Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: 1986 pontiac firebird trans am 5.0L V8 F/I
A torque converter upgrade is some real bang for the buck on an auto trans car.
Ideally, a 9.5" 2800 rpm stall unit like this: http://www.edgeracingconverters.com/...ions-p-35.html
Or, for about 1/3 the cost and still getting at least half of that performance boost, consider this: http://www.rockauto.com/en/catalog/c...converter,8668
Don't let anyone talk you into more than the 2800 stall on a TPI street setup, unless you're only interested in 60' and 1/4 miles times, and running slicks or drag radials.
Ideally, a 9.5" 2800 rpm stall unit like this: http://www.edgeracingconverters.com/...ions-p-35.html
Or, for about 1/3 the cost and still getting at least half of that performance boost, consider this: http://www.rockauto.com/en/catalog/c...converter,8668
Don't let anyone talk you into more than the 2800 stall on a TPI street setup, unless you're only interested in 60' and 1/4 miles times, and running slicks or drag radials.
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02-05-2016, 03:44 PM
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Car: 1 Owner 1986 TA with a WS6 package
Engine: 5.0 EFI
Transmission: THM700R4
Axle/Gears: 277 Posi Speedo
Re: 1986 pontiac firebird trans am 5.0L V8 F/I
as many of you know, MY 86 trans am is garbage. mine is bone stock, not so fast at all.
thinking about putting a cold air intake on it, what else can i do to increase its 0-60 time?
02-05-2016, 05:35 PM
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Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: 1986 pontiac firebird trans am 5.0L V8 F/I
I was gonna say somethig along those lines Fran, but just posted the Vette engine instead. Getting older I guess. Mine are fast enough for me.
02-05-2016, 06:00 PM
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Car: 1 Owner 1986 TA with a WS6 package
Engine: 5.0 EFI
Transmission: THM700R4
Axle/Gears: 277 Posi Speedo
Re: 1986 pontiac firebird trans am 5.0L V8 F/I
Yea! I didn't care for the generalization of the post.
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