My buddy has an 1998 Z28 with the LS1 its dynod at 325 rwhp and 342 torque, has 4.11 12 bolt, t56 with stock clutch, street tires.

My setup is a 383 ~400-450 rwhp same torque if not more, 3.23 10 bolt (4th gen), t5 stage 3 centerforce clutch (the car will have a 700r4 after building it), and DR's.

Who is going to be faster in the 1/4 mile. He isnt going to bore shift nor am i seeing how i dont want to dump the t5 all over the track. He keeps telling me that a pro can drive his car into the 12's but he is far from pro. I know with auto my car should easily be 11's but the t5 i have no idea.

Thanks in advance, Chas

 

You'll most likely have him beat, unless he learns how to shift like a pro quickly. Then it all depends on who jumps better.

Should be a good race. Going to record it?

 

[quote=

My setup is a 383 ~400-450 rwhp same torque if not more,





sounds like your not sure???????
or not tested/dynoed????

i have 452 crank h.p. 430 crank torque and run low low 12's

 

Im hoping to get it on tape. Im trying to beat my buddy's crotch rocket too. but he is a lil faster than me so it should be a good race either way.

Thanks, Chas

 

Haven't dynod yet. The cam on a 350 produced 390 bhp so im hoping on the 383 (but im bored .060 instead of .030 so its like a 388) and with better flowing heads and a lot higher compression it will give me a lot more seeing how im spinning it a lot higher more where its rated for. Its the most agressive cam that i could find that will spin under 7k.

on a side note im running 11:1 compression

 

what heads are you running?

 

port and polished gm casting. cant remember the casting but they flowed well from the factory and have upgraded 2.02/1.50

 

My 383 runs World Sportsman II's with a 280XFI. I should be in the low 12's. Is your cam the XE284? XE290? I also run a WCT5 with a centerforce dual friction with 3.70's...

Those GM casting heads aluminum?

 

unfortunately they aren't. Im running the XE284H-10 i have to swap the firing order of 2 of my wires if that helps u narrow it down. i was looking at my flow numbers and they flow about the same as the sportmans. the only thing is that on the dyno sheet from comp they dont specify the the intake runner or the exhaust runner size.

 

i would think your making 425-450 hp at most at the flywheel, not rear wheel. you should be sitting at 375 rear wheel. you'd have to make 525 flywheel hp to get into the 425-450 rear wheel range. i doubt your that high. if your on dr and he's on streets, you got him by a longshot.

 

from the setup that i have now and what people around me run they said i should be able to get right around 400 rwhp. They said definitely could be higher but could be all depends on the flow of my heads.

 

You should win. I run a stock bore 350 with heads and cam and run 12.01. Should be a little better with more tuning. Most stock or slightly modded LS1's cant hang with me. If he is running street tires and you DR's then you shouldnt have a problem winning.

Oh yeah, Im not sure on my Hp rating but my et/speed is in my sig. My car with me and 1/2 tank of gas weighs in at 3350. His car should weigh more than yours depending on any weight reductions either has done.

 

currious what are you running for your short time???

 

7.63 in the 1/8.

 

sorry i meant 60 foot

 

1.61-1.64 60 ft. Forgot it wasnt in my sig.

 

i ran a best of 12.29@112 n/a
i cant get out of 1.8's for a short time
even with a 125 shot off the line
i ran a best of 11.8##@119mph
guess what my short time was........1.8 doughhhhhh

 

What kind of tires/converter/suspension are you running.

Im running LCARB's, 3,73's, Hoosier QTP's and 3500 10" jegs converter.

 

is that on stock 10bolt? i have a 4th gen im going to throw a girdle on and hope it stays together. Im going to be throw some braces too.

 

i have relo brackets ,adjustable lca's,
also lakewood 50/50's in rear, 90/10's up front with moroso trick springs(front)
8pt bar and frame ties
air bag in r/r
and 10.5 e.t. streets (26 inch)
3000 stall
3.73 r+p

 

Yeah, the rear is stock except for the Richmond gears and the LCARB's. I will be adding the Girdle and LCA's soon.

 

Depending on your cam rpm range and type intake you are running, you need a higher rpm converter. Are you letting it flash or are you loading on the brakes?

 

loading on the brakes gets me the best 60'
ive tried letting the converter flash with no improvement oi actually only get 2700 rpm outa my combo
i wish i could snap my fingers and make it a 4500 stall (my peak tq is only 428 lbs @4800rpm)