Held off a Bolt on 02 Z28

[SupraRacer]

Doesnt sound to impressive as Z28's arent hard to beat, but from what ive found. its not the amount of mods but the right combination of mods.

His car:
2002 Z28 Hardtop(LS6 Intake manifold)
M/T Et streets
3400 stall
Ls1 Edit
aggressive tune
long tubes,
y-pipe,
no cats
True twin 3" catback
Lid
180 dry shot(he didnt use)
car ran a 12.5@108 1.6 60' off the bottle

Anyway, we only got two good runs in but basically the first run was a 25 punch, and when we hit off i spun a bit and he got out about half a car. i shifted into 2nd and my car sputtered all the way through 2nd. and he got out a car to a car and a half.

so we lined up this time around 45 so im in 2nd.i brake boost and wait. well hes by my door, and he blips the throttle, so i tear off, but he lets out and then gets back on it. basically he is back to my rear tire. well i shift into 3rd and watch his bumper inch up about a foot on me. shift into 4th he falls back a few inches, then starts to ever so slowly inch up. he never got passed mid-door. we shut down around 125, well past our trap speeds. I suprised the hell out of him. he expected to pull easily on me. After my next mods arrive he said hell have to spray to beat me. Which gave me an idea.....how big of a shot do you think a stock 1j wil hold, lol j/k

 

[tubbie]

Put a 200 shot on it... That'll blow some smoke up his tail pipe..... :bigthumb:

 

[jbsupra89t]

Good kill. If it were an M6 it'd been a tougher race. If he sprays, you best pick up a shot or a single

-J

 

[SupraRacer]

idk, he doesnt have the shitty gears most Z28's have. i think he has 3.4 something where other z28's have ~2.9's. Plus the line pressure in his tranny has been tweaked, and his shift points tuned. There is a guy up in stlouis that is a LS1 god. he tunes these motors and he got his hands on this car and used every little trick he knew of when he tuned it. this car put down 334rwhp with just a catback. before the tune, ypipe, headers, etc. The 02 Z28 cars had the emmissionless ls6 intake manifold, which has larger runners, and LS6 internals. not to mention the higher gear ratios. This car is infamous around here. Ran into the 10's on spray.

From what ive seen M6 only trap a few mph higher and trust me they dont get off the line anything like this can. a full bolt on M6 SS ran a 12.7 up here with basically the same mods(lid, long tubes, catback) i have still to find him....

 

[supradan22]

75-100 wet shot would be nice on the 1j along with a nice big single.

 

[jbsupra89t]

Cool, just a few FYIs... stock gears in an M6 are 3.42, A4 2.72 OR 3.23. The 01-02 ALL had LS6 intake manifolds, with a select few having the LS6 block (which doesn't do jack, for all intents and purposes). I would run the Manual car from a roll if you can, from my experience, the outcome should be a little different (my friend's 12.9@111 car was pretty damn stout from a roll). Good kill!

-J

 

[SupraRacer]

wheni upgrade it will be upgraded twins, id like either twin 20g's or twin GT35R's.


His is the LS6 Block, and 3.23's. from what ive seen most 6sp maros cant seem to grab traction off the line. the auto guys seem to do better. But with the 264 crower cam to compliment my HKS 264 exhaust cam, and my OS Giken twin disc clutch along with a set of Et drags, and a 5-6K launch im going to hurt a few guys around here who continue to bring up my 13.6 pass. :evil2: Then its tuning, FMIC and hardpipes and maybe an aftermarket Intake manny, and well see what the new record is for highest hp and et on the stock twins...

 

[IJ.]

Twin 35r's on a 1Jz?

 

[SupraRacer]

Twin 35r's on a 1Jz?

And you know it. figure each is good for 600whp so 1200whp with a nice 100-120shot for spool up and "just in case" figure ill have to make the engine rev closer to 9500-10 for it to be useful, but thats why its a goal.

 

[supradan22]

OOOOO time for some forged internalls when that new twin setup comes around.

 

[jbsupra89t]

Outlaunching a decently sized stalled auto is no easy task... stick it to 'em I was contemplating twin 35s actually, but the size factor was coming up (as in literally not having enough room). Maybe twin 30Rs? Good for 500 or so each, and even with my .87 backside, spool is pretty damn good.

-J

 

[SupraRacer]

i got the idea from a buddy of mine, he was in the process of doing it and went with twin 20g's instead. there was a 1j out in cali that has put 1200rwhp down on stock internals. not that im going to but the 1j is just as strong as the 2j in how much power it can hold stock.

When i had my 7m(i raced more fbodies in my 7m) i never got beat off the line. even with everything in their favor, less weight, live rear axle, wider tires, larger sidewalls, auto's. I would allways beat then out. the closest i had was with a auto and he had a stall. and we were even off the line. I liked racing fbodies they were allways so predictable. you can tell easily what they have done, and then guess pretty accuratly what they run, and i beat enough guys by intimidating them and they would mess up. Then when i started beating more and more guys, that made other guys even more nervous, which if you cant perform under pressure, then you shouldnt be racing. lol . I talked alot of shit to get races going, and so far have backed up every word of it. and i guess LS1 guys arent used to being blown off by a import owner when he lists off his mods. so they start second guessing themselves and then maybe they brake torque a bit too much , or give it a bit too much gas. but hell thats part of racing.

 

[blacksupra]

I think with full bolts on a ls1 should be faster than 12.9 cuz my lt1 with bolts on with 4.10 gears was shooting 13.1(with slicks)After i got the heads and cam package I ran mids 11's now with the 396 stroker(ported afr heads and a custom cam I'm hoping 9's with full suspension mods and fuel syst.

 

[SupraRacer]

oh god yes a full bolt on ls1(Lid, Headers, ypipe, catback) should be mid 12's atleast.

 

[jbsupra89t]

On street tires, it's gonna be tough, especially on an M6 to go faster than high 12s. On an auto, I could see it, as it's far more forgiving on the stock 10 bolt rear.

-J

 

[SupraRacer]

considering a good driver can get a M6 into the 12's stock, its entirely possible yet not easy without practise or an experianced driver

 

[Brewster]

Nice kill. What mods do you have done now?

 

[SupraRacer]

Sard Ecu
19psi
3"Dp
3" test pipe
3.25" Tanabe Hyper medalion
header wrapped the intake piping, made a true cold air box (trust me helped alot)
all on the stock clutch(which is slipping after 4500)

Un-Tuned
Stock twins
Stock IC
Stock IC piping
Stock cams
Stock y-pipe

Really my car is nothing without the Cams, OS Giken, FMIC, Hardpipes and tune. but im aiming for the highest whp and fastest E.t on the stock twins. well see how things go.