Does anyone know what a stock 87 GTA with a 350 TPI will run in the 1/4 mile?
thanks
Tom

 

~15.4s



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-88 GTA 305TPI/T5, 3.45 posi, Crane cams 2032, Edelbrock TES #6872, 3" cat-back, ported+portmatched heads, base, plenum, multiangle valve job, no cat, no air, Haltech E6GM ECM. http://www.helsinki.fi/~kjilehto

 

You can find all kinds of info on GTAs at www.gtasourcepage.com It's a great resource.

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We need Perry Mason

 

Thanks guys for the info. Is there a site like that for camaros or Iroc-z? Also am i correct in saying that GTAs and Irocs had the same engines and same horsepower rating?
Thanks
Tom

 

Zio, the horsepower ratings between the two cars are different. The chevy products run a more efficent air induction system and were rated approximately 10 hp more for the both the v-8s. Hope this helps.

 

These cars stock would run high 14s to low 15s.

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1989 GTA Trans Am
Gunmetal Metallic, T-Tops
L98, 700R4, 3.27

Mustangs are just jealous...and mopars had nothing on the LS6 Chevelles.

 

your looking at high 14's low 15's definitely

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1988 GTA 5.7L TPI Auto
355 ci. block,TPIS ZZ-9 Camshaft, SLP Headers, Borla Cat Back, B&M Holeshot 2400 Stall Converter, 3.73 Richmond Gears

"Why ride a stang when birds can fly?"

http://www.geocities.com/thegta

 

I had an 87 GTA that ran a best of 14.48 with just a new chip and timing, but it would usually run 14.80's. Traded this car for a TTA and went 2 seconds faster.

Pete

 

Are the 350TPI motors that slow stock?
I have an LG4 motor with a new carb and intake and I ran a best of 14.94.
Car runs easily in the low 15's and high 14's. And I had 155-165hp stock!!!


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Zepher
'86 Pontiac Trans Am WS6, LG4 305, 5 Speed, CF DF Clutch,
Edelbrock 1406 Carb, Edelbrock Performer RPM 7101 Intake Manifold.
Edelbrock Open Element Air Cleaner: Flowmaster Exhaust, 160* Thermostat,
Grant GT Steering Wheel, MSD HEI Coil, Taylor 8mm Wires, Leather 96 Camaro SS Seats,
Alpine CD+Changer,Alpine V12 Amps, Premier TS-1040C Subs, Polk Audio highs/mids.
Best ET: 14.94@91.67
High Speed Run: 157mph
WS6 Trans Am

 

87 IROC-Z28 350 TPI: 225HP and 330TQ

87 GTA 350 TPI: 210HP and 315TQ

Stock 87 GTA 350 TPI's usually ran about 14.5-14.6. A stock 87 IROC-Z 350 TPI will usually run about 14.2-14.4, because it doesn't weigh as much as the GTA, and the Camaro has a better air intake design. The GTA's 0-60 times aren't as fast also, usually a 6.4-6.5, and the IROC-Z usually a 6.2.

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Looking For:

87 IROC-Z28 350 TPI: The car I want.

84 TRANS AM 305 H.O.: Another car that would be OK to own while I look for the IROC-Z!!

[This message has been edited by IROCZTWENTYGR8 (edited March 23, 2001).]

 

I think you're a little optomistic on the times for 87 L98's. They had the smallest cam. From what I've seen, 87's are good for 14.8's to 15.2's. 88-89 with single cats are high 14's, and 89-92 with dual cats are mid 14's.

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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

I will have to disagree with u on this 91Z. I have seen test results for them that fast, given a good track with more than average conditions, a car with those #'s should be able to run that. Here are the cam differences:

350 TPI Engines
87: 202/207(duration) .404"/.415"(lift)and 114.5(lobe)
88-89: 207/213(duration) .415"/.430"(lift)and 117(lobe)
90-92: 202/207(duration) .413"/.428"(lift) and 114.5(lobe)

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Looking For:

87 IROC-Z28 350 TPI: The car I want.

84 TRANS AM 305 H.O.: Another car that would be OK to own while I look for the IROC-Z!!