last year na my car was cutting 2.1 60's on street tires
now that i have the turbo in i just recently ran the car on street tires at 11 psi and cut 2.4-2.5's all night long.
the rear suspension consits of boxed stock lca's/w poly bushings,3 way adjustable drag shocks, reinforced tq arm with solid mount(hiem joint)and 1le sway bar/springs and 4:10 gears.leaving off the 2 step at 2,400 anihalates the tires,if i leave off the foot brake with the motor at 1,800-2,000 rpms it just bogs and then starts to spin 30 ft out,and anything higher leads to to much tire spin off the line.right now slicks are out due to the fact i still have the 10 bolt in the car.
any suggestions or ideas on things to change

 

that torque arm needs to be able to move. you need some sort of sliding link in it to absorb some of the shock.

any particular reason your running street tires? running street tires at the drag strip is like trying to skate on ice with tennis shoes...then wondering why you keep fallin on your butt. i've been 1.64 to the 60' on my 10 bolt and 87 T/A has been 1.3x's....

 

opps sorry when i said solid mount i just meant not in rubber.it has a hiem joint on the end but it is able to slide back and forth like the stock mount.used a hiem joint so it would be able to tilt left and right with the rear around corners.as far as not using slicks ive never had to use them before,fastest the car went all motor was 14.8,but now with the turbo its knocking down some 13.25's with 109+ trap speeds on the street tires. i wa sjust always under the impression the 10 bolt wouldnt live up past like mid 13 sec range with slicks,specially in a heavy car, mine happens to be about 3,850/w me last time i wieghed it,though since then ive tossed alot of stuff and have the fiberglass hood.so maybe its down around 3,5xx with a full tank

 

drag radials and lca relocation brackets. First time out this year I was cutting anwhere from 1.79-1.83's. I put the lca brackets on and went to consistent 1.65's. Don't worry about sticky tires on a 10 bolt, you'll be ok unless you're pushing big power and dumping the clutch. My car weighs in at 3350 and runs 12.1's at 112mph. It'll be in the 11's now with the new exhaust (LT's and true duals) and more gear.

 

those lca relocation brackets work that well?do they change the ride on the street at all?
automatic with 3k converter and 2 step.not alot of power off the line,im making my power down track as u can see from my trap speeds of 109+ with low 13 sec runs.well im going back to the track tom i have a set of 10 inch wide hoosiers drag slicks that ill bolt on and see how it does

 

Yeah, they work that well. It was the only change I made. I leave from 2000 RPM on a 3600 stall. Also running a 28" tire. The height is more important than the width. I'm looking for high 1.5's now with the added gear, drag shocks, Moroso trick springs, less weight and my tires will have more of a contact patch since I went from a 7" wheel to an 8". You may be having a hard time simply b/c the car has no ***** off the line.

 

yes, the lca relocation brackets are that big of a deal. i'm running them and a 4000 stall converter and a 28" tall tire. been 12.5 @ 106.8mph with the 305, old 350 went 12.16 babying it out of the hole (had spare rearend in it with no lca relocation brackets and no posi, woulda went 11.8's with good rearend under it.)

 

well i didnt make it to the track today(i woke up to late).so i bolted the slicks on an tried them out on the street.well the car hooks good.but even off the 2 step with the turbo spooled its bogging off the line.ive got to get the tires to slightly spin off the line to keep the motor from bogging on launch.hopefully setting the drag shocks firmer will help that a bit.if that dosent work i quess ima have to buy a higher stall converter

 

hehe, or put more gear in her...throw some 4.56's in her...i honestly don't think that the turbo 3.1 is going to have enough torque to hurt that 7.5...though i bet with 109mph trap speeds it pulls like a motha-trucka on the top end. my car with the old 350 in it went 12.16 @ 110mph

 

i need a lower gear. 4:10's and 4:56s are no good for turbo motors,im actually droping back down to 3:42's or 3:73's.the lower gears should pick up my et.and yeah the car pulls hard on the top end.my ultimate goal is the v6 record which is currently held by a 4thgen nitrous injected 3.8.which stands at 11.86

 

the v6 record? i know twin turbo 3.8's in GN's running mid 8's buddy

 

gm f-body v6 record non tta and the car has to be a street car taged/insured

 

how come the tta's can't play?

 

What size turbo do you have on that? Where does it start making boost and where does it have full boost?

It depends on how he has it setup. With my current turbo (wayyyy too small for my setup) I have full boost at around 1700-1800rpm and on 6psi I made 276wtq. with a FWD auto. (convertor locked to avoid convertor flash) With the 13.5psi I make now its getting damn near 400 to the pavement. Of course my setup is way different than his, but 400wtq. with sticky tires and a high geared 7.5 could be trouble. But, like he said, he doesn't need more gear. He would probably do better with 3.42ish gears.


Prolly 'cause he knows they'll spank him hardcore.

 

Fastest GN is a single turbo V6 with a liberty 5 speed, 7.20's. Street cars mid 8's no problem.

A couple turbo v6 guys in the area, one guy been high 11's, the other low 12's both in 4th gens. Also a procharged v6 '98 firebird here that's been 12.20's. I think most of your problem lies in your engine setup and tuning.

 

tO4E stage 3 57 trim .63/.50 making 6 psi by 2,300-2,400 and 11 psi @ 3,000.
the car has a 3k converter in it.though i leave off the 2step at 2,400

 

well i found out whats making my motor bog on launch.finally got the lm-1 wideband hooked up,and on the onset of boost the motor goes dead lean,like as if its to the point were the injectors just shut off for a split second