Taking my Z to the 1/8 mile track on Wednesday

[Pete]

His sig says 375rwhp
Tires/gears is the reason i say if he could keep it under 2.0 60ft

1992 ZR-1 #483
Dark Red Metallic
Mods
-Jeal headers
-Stock exhaust with X-pipe
-4.30 Gears
-Corey Henderson tune
-375 RWHP

Pete

[sammy]

i didnt see the 375. old guy i guess . if the da is less than 500 he might hit 89-90 but the unknown is 430s and street tires . going to need a very slow soft foot grasshopper . and maybe short shifting into second to avoid big wheel spin there .. if youi get et streets make sure you ck the ujoints before you go .if there are any zerks on the half shaft ujoints replace them before you go. breaking a 1/2 shaft u joint can be very distructive to ones wallet

[Brillo1990]

Originally Posted by sammy

if there are any zerks on the half shaft ujoints replace them before you go. breaking a 1/2 shaft u joint can be very distructive to ones wallet

OK I may be ignorant here asking but why would this make a difference? These were bad from the factory or what?

[1990 quasar blue]

Originally Posted by Nacho_ZR1

Yes this is what i am looking for honestly. If my mph is 89 or greater then i will be happy. The car already weighs 3600 and my tubby a$$ weighs around 240 so the car will be h e a v y.

I'm the same way which is why I can't remember my et. Just don't care that much about it. With that being said your making 20rwhp more than I was. You only weigh 20 lbs more and have 430s. I think your et is the crapshoot. Your mph has to be 90mph or better.

[Wide_One]

Going against the rules here And I'm going to post a actual 1/8 mile time slip from my stock ZR1. For me it's simple dyno your car let the car speak for itself and backup the dyno slip. I'm 156 and in the other lane 108 was gm's infamous blazer ss (don't know all about it but in the staging lanes the owner said something about high 11's) anyway results may vary! If it to small I'll fix later but it goes 60' 1.88 et 7.8 and 90.21 mph through stock mufflers owned the car since it was new.

[Nacho_ZR1]

Originally Posted by Wide_One

Going against the rules here And I'm going to post a actual 1/8 mile time slip from my stock ZR1. For me it's simple dyno your car let the car speak for itself and backup the dyno slip. I'm 156 and in the other lane 108 was gm's infamous blazer ss (don't know all about it but in the staging lanes the owner said something about high 11's) anyway results may vary! If it to small I'll fix later but it goes 60' 1.88 et 7.8 and 90.21 mph through stock mufflers owned the car since it was new.

Wow a 7.8 converts to a low 12 in the 1/4 mile. I thought stock Z's ran low 13's to high 12's in stock trim? How'd you get 1.88 60 foots? Did you use drag radials?

Impressive time!!!!!!

[Wide_One]

Yes!!

[sammy]

thats impressive , the one thing about infineon is that the da is usually negitive which makes a big difference .plus their track prep is legendary.. a more standard et coming from both my cars that at the time had the same mods as you would be in the 8.2 range at about 88.5-89 mph . as pete will tell you our cars mile an hr goes up the better they hook .the da when i ran those times was 2500-3000 ft. i say again though the real hard thing for you will be to get the car to launch on street tires with your gears . any way it goes .HAVE A GREAT TIME

[Nacho_ZR1]

Just an update. I gave in and bought a set of M/T Drag Radials

These are the newer tread design that looks very stealthy. "It's just a stock ZR-1" <wink>







I'm too scared to launch the car at 4K rpm so maybe I'll stick around the 2500 rpm mark.

Anyway, I'm off to Discount Tire to get these bad boys mounted.

Stay tuned...

[sammy]

i have used these in the past . you will have to do a good 4-5 second burn out before your first pass to get them to hook . i tried all sorts of tire pressures . when i went to 15lbs the felt real squirrily at the top end . since you are only going to the 1/8 mile you might get away with it . i stay around 17-19 lbs and tried to launch around 2000 rpms and roll my foot into the throttle so i was floored in about 10 ft from the starting line .if i got more agressive they just blew the tires off the car. hope this gives you a little guideline info on these tires and car . good luck and have a great time .