Top Speed?
#1
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Location: Sharon, CT, 06069
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Top Speed?
I was wondering what the top speed for a 1988 GTA with a 350 TPI was. I read that teh Iroc was 149. Do any of you know if it is different.
Jason
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1988 Pontiac GTA
Loaded
350 700R4
#3
The GTA should run around 148 to 150 or so mph.
------------------
TPI 305,
Gutted airboxes,
gutted MAF,
K&N filters,
Corvette Servo.
14.9@93mph
"Speed kills, wanna live forever, drive a Ford."
------------------
TPI 305,
Gutted airboxes,
gutted MAF,
K&N filters,
Corvette Servo.
14.9@93mph
"Speed kills, wanna live forever, drive a Ford."
#4
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So I must have been trapped in the good old 700R4 overdrive trap. YOu know how it won't shift at full throttle. I was trying to chase down my friend with a 65 vette and I got up to 114 and my car was just about redlining so I figured I was in third so i tried to let off a little but not to much so that i would get smoked even more than i was. Maybe if i got off the throttle a little bit more it would have shiffted. Here is my question. Is it possible for a gta (88) 350 to be doing 114 mile per hour in 3rd.
Thanks
Jason
------------------
1988 Pontiac GTA
Loaded
350 700R4
Thanks
Jason
------------------
1988 Pontiac GTA
Loaded
350 700R4
#5
Third in my car goes to 120 (redline). FWIW, I've taken my car to 140 bone stock...150 would probably be possible during the day (no pop-up lights) w/ a *long* stretch of road.
Matt
87 Firebird Formula 350
Matt
87 Firebird Formula 350
#6
this reminds me of something funny. When I got the 305 in my IROC modded-up a while back, I went and got one of my friends to drive my formula for a little "test" He was amazed how I pulled him around 120. I didn't tell him about the 700r4 3-4 shift deal. He still thinks the old 305 was a monster on top end !!
#7
i out the 145 speedo in mine i got it to 130 once had to backoff the throttle a lil (bout 3/4 or so to shift to 4. once it hits 115 or so 3rd tops
(2.73:1 rears are good for something) (topspeed)
-Stell
------------------
1988 IROC 305TPI MINT!!
Mods= Accell SuperCoil, MSD 6A, Ported Plenum, No MAF Screans , K & N, 160 Thermostat+ Temp Switch
And Always Trying To Go Faster
(2.73:1 rears are good for something) (topspeed)
-Stell
------------------
1988 IROC 305TPI MINT!!
Mods= Accell SuperCoil, MSD 6A, Ported Plenum, No MAF Screans , K & N, 160 Thermostat+ Temp Switch
And Always Trying To Go Faster
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#8
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Car: 89 Formula
Engine: 350
Transmission: TH 700R4
Axle/Gears: 3.27
The Motor Trend Top Speed issue (in 87 or 88)
featued a 350 GTA which reached a top speed of 141mph. Incidently my old 305/5spd/3.45
(87 IROC) hit 4500 rpm in 4th= 135-137mph.
But then again I was at 3500ft so at sea level I would expect 142+
featued a 350 GTA which reached a top speed of 141mph. Incidently my old 305/5spd/3.45
(87 IROC) hit 4500 rpm in 4th= 135-137mph.
But then again I was at 3500ft so at sea level I would expect 142+
#9
Supreme Member
iTrader: (9)
well, when I had my 305 all stock I got it just passed 140 145? and still had more tach but, it was close to red line it may have been for all I know just know it did it and it was still going. this is with 3.23's now the 350 has the t-5 and 5th is so tall. the auto would do 65 mph at 2200 rpm now the t-5 does 80 mph at 2200 and yes both auto and manual were checked with radar and dead on.
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