scarybowtie

iTrader: (9)

I'm getting a 15" setup for my 01 z28 soon and was curious what you guys have had the best luck with for an m6 car. It makes 400whp, and has 4.10 gears. I borrowed a buddies 26x11.5 et streets a couple weeks ago and the car went 1.69 60ft and i could've left a touch harder. But the thing is on the dyno it showed to run out of gear in 4th at 121mph. The car traps 115 now amd i have a nitrous kit going on soon.

So will i have the gear to go through the traps on a 150 shot if i get a 27" tire?
And et street or qtp?
thanks -Josh

djfury05

iTrader: (30)

I use MT ET Drags 28" stiff wall with 4.30s. Don't use radials with a 6 speed unless you are at the track a lot and know how to make all the appropriate adjustments and actually have the suspension for them.

scarybowtie

iTrader: (9)

I am going bias for sure. Do you think 27" tires would get me through the quarter on spray?

ren987

iTrader: (4)

do yourself a favor and go ahead and get a full slick, and get 28x10.5's stiff side walls. The bias plys are not as good. I have Ran a couple sets and didn't have luck with either as compared to the full slicks. You can go fast on 26's also, but I would just go a head and skip them. I consistently cut 1.40-1.44's on worn out 28's. Also With 26's I was able to go 132 in the 1/4 and 28's I went 136 with a little wiggle room, my rev limiter is set around 7200 and the rear gear is a 4.30.

scarybowtie

iTrader: (9)

Well i do too much driving in the streets for a full slick, I want to stay with a DOT tire. And with 9 year old 26" et streets and stock suspension besides summit drag shocks in rear i went 1.6 60 fts in athe full weightslicl car and still could have left harder, so I'm not too worried about that. I'm mainly concerned with having a tall enough tire to go through the 1/4, and what m6 quys had the best luck with - et street or qtp. I run out of gear hitting the rev limiter at 121mph in fourth with a 26" tire and i know I'll trap higher than that on spray, and I'm not raising the rev limiter to 7200. Thanks for your input though

ren987

iTrader: (4)

well just trying to help, I ran the 28x11.50 et street, I honestly can't remeber what I 60ft on it but I think it was high 1.5x's a friend of mine was using the hoosier qtp's and wasn't having much luck with them either. I would say it just comes down to price and availibility. I am not sure on the hoosiers but I know the mt's ran an inch narrower so keep that in mind. Also what rpm are you turning and is this on a stock engine or is it cammed or what? we need some more details!

scarybowtie

iTrader: (9)

I definately appreciate your input! Stock bottom end ls1, stock 243s, ai 226 234 cam, pace setter headers, 4.10 gear. Rev limiter is set at 6600. I'd hate to buy a tire then bump the rev limiter bc i run out of gear lol.

ren987

iTrader: (4)

Ok well check out this site, you will find on the right side of the page the gear ratio calc info you need. What year engine is the car? did you put rod bolts in it? You can bump that limiter up some and be fine. When I was on nitrous I had the window switch shut the kit off at 6600 rpm and I would role across the line around 7k. I also made 400 rwhp NA and went 122-123 na. The nitrous is really going to help wake it up. I trapped 136 with 150 shot.

scarybowtie

iTrader: (9)

The ls1 is a 99. And nope stock rod bolts. Id like to leave the limiter as is but i guess we'll see. Thanks for the link!

ren987

iTrader: (4)

no problem, that web site has a lot of other great info too. You are probably going to be fine with 28's just make sure you have the nitrous turning off before the limiter other wise things could get nasty.

coolmanvette75

iTrader: (2)

I run a 28x11.5 ET Drag. Great tire for an M6 car...

scarybowtie

iTrader: (9)

Think this pig will be a turd on motor with the 28" tire?

ren987

iTrader: (4)

not if you are good at dragging the clutch. You do have a good rear end in the car right?

scarybowtie

iTrader: (9)

I canhave drive it. I'm working on my 8.8 hybrid now so I'm not worried about the 10 bolt

ren987

iTrader: (4)

ok good, It only took me two track trips to hurt my 10 bolt with the bias ply et streets. I am going to say once you want to cut serious time off your 60ft's you will have to ditch the et streets, they are not even in the same ball park from my experience as a good stiff sidewall slick so if you want to save yourself some headache/time/money go ahead and get some stiff 26 or 28's

djfury05

iTrader: (30)

If your limiter is at 6600 and you have 4.10 gears with a 26" tire you should be at 125 at the top of 4th.

Check out this site to calculate it. http://www.f-body.org/gears/

mike c.

iTrader: (1)

First,you do not need a full slick. I have tried m/t,hoosier and M&H Racemaster. Out of them all on my m6 car the m&h was the best by far. I run their 26x11.5x15 CHEETER slick 1.42 to 1.44 w/4.11's in a 3,700lbs car w/me in it. They do make a 27'' too. After trying the others,I will only run m&h tires. www.intercotire.com good luck. My susp-is nothing special,but I cut better 60's on a 26 them a lot do on taller tires.

ren987

iTrader: (4)

never ran the m&h, the et streets were not great for me. May be on to something!

flintwrench69

iTrader: (11)

Thanks for the info. Running ET street bias now & they are ok but they havent exceeded my expectations. I might have to try something else next year. I always heard great things about Hoosiers, suprized to hear the M&H works better.

scarybowtie

iTrader: (9)

I've heard really good things about m&h before. I think you just made up my mind. A 27"tire m&h will get me to 129 mph and there might be a little tire growth. That should get me through on a 150150 hit. Thanks for the help guys