What would it take to make a 90-92 Z28 run a 12.9 in the 1/4 mile?

-Thanks

 

a supercharger kit and some suspension goodies would get you there.

 

supercharger, cam , heads, exhaust, posi gears , tons of suspension goodies for traction that combo would defintly get you into the 12's with no problem

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91 camaro RS
- 305 TBI
Mods: Performer TBI intake, 1" TBI spacer, K+N, jet fan switch ,160 thermo,Accel control module, Jet Stage 2 chip, edelbrock TES headers, Compleate 3" Flowmaster exhaust, Edelbrock springs, KYB struts and shocks, 700R4 built by TSI, SLP tq converter, b+m trans cooler, white guage faces, megashifter..
next month: spohn LCA's and panhard rod, BMR relocation brackets, 323 gear, lt1 cam , 350 heads

 

all that stuff should get you in the 10s. I run close enough to 12.9.....check my setup

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91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 224/230 duration and .477/.480 lift. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, 3000rpm stall converter. Edelbrock TES, 3inch cat, flowmaster with single 2.5 inch exit.
Best time yet to come
13.0 @ 107- N/A
12.5@ 117- 100HP Nitrous

This is a Pic of my car in race trim www.tbns.net/billyjay/camero.jpg

Yes I know how to spell camaro- so dont ask. I didnt make the link

 

double post



[This message has been edited by vortecfcar (edited September 06, 2001).]

 

How much in mods did you spend for all that stuff? Was it the original L98 rebuilt or another engine?

-Thanks

 

Chuck,

A 90 - 92 Z28 (of couse I talking about a 350) and if you are talking a TPI motor then the it would be different. I say different cause you could get away without a supercharger, and that is around $2500 new!
Now don't get me wrong, I'd love to have a SC but I like to get all I can out of a engine first then add a SC. And yes my setup still needs alot of work but that is a different story.
You would need new heads AFR 190's and a new cam something like a LT4 Hot Cam ( Duration, I think, 216/228). Along with that a new aftermarket (Edelbrock) intake manifold that is ported and a set of SLP runners with the seperator inside of them removed. Of couse you need to port the stock plenum and a 52mm throttle body wouldn't hurt. Or you could go with a superram or miniram instead of the stock plenum. This setup should give a nice high reving engine (around 6000 rpms maybe alittle higher) and a good torque curve.
Next you need SLP 1 3/4" headers and a good 3" cat back exhaust. Then you'll have all this power and need a good suspension and a tight chasis so sub frames will be needed and lower control arms, panhard bar and I suggest Spohn adjustable torque arm too for good low 60' launches. And good shocks.
Then the gears you want to say inbetween is 3.23 and 3.42's. A TPI system seems to do the best in here.
If you have a automatic tranny then a good torque convetor with a stall inbetween 2500 - 2800 rpms.
Now one thing to remember with a TPI motor is it has a comupter so you'll need a custom chip programmed for this setup.
I guess this setup is Traxion's(Prom board moderator) almost. But he has gotten into the 12's without a SC. He also did a GREAT review on his mods, I think, in the aftermarket product review board, do a search in there for his name and you'll find it.
Either way with a SC or without it is possible you just need money!

Good Luck!


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89 IROC 350 Auto
MSD 6AL
Custom DUAL Exhaust
Edelbrock Performer 6085 Aluminum Heads
ZZ9 Cam
TPIS Level 5 Chip
And Free mods.
(stock intake, runners and suspension)

13.879 @ 98.90 mph (with 2.77 gears!)


Moderator of http://www.iroczone.com