*Any M6 cars going over 135 mph, please check this out!!!
 

I race this weekend, and ran 132.5 mph with 27" tall tires and 3:73's. I crossed the traps with my shift light just coming on, should i go down to 3:55's? Do to near future mods?
Thanks.

just goto a 28" tire :) problem solved ;) what is your light set at?

congrats that is moving! what was your et?

28's wont fit, my 27's rub a bit, Car has ground FX's.
Im running a best of 10.6 @ 132, 1.6 60'
the car has done 1.5's and that was with little suspention tweeking (run out of time)
Im hoping to tune the car with 11 psi, put the 2 step in, tweek suspention, lighten the car a bit(3,700 lbs)
and break it out next years and run 10.3-10.4 with some high 1.4 60'
I think it can be done.
Im shifting at 6,200. but it is a stock block so i dont want to over rev it.

doh! same gear and tire i got.... :( when i bought the hoosiers i calculated i could go 133 on them... math works.. wierd!

you got another motor.. let her eat.

What are you shifting at? 6,200?

Before changing gears for future mods, give yourself a MPH/horsepower goal and go from there.

3.55's would get you 140mph @ 6,200 on the 27in tires

3.42's would get you to 146 @ 6,200 on the 27's.


My goal is 140 on street tires, so I'm going with 3.42's.


BTW, congratulations on the new times! :chug:

MM, No new motor yet, I got some parts for it, but $2,000 on my new rear set up put me behind a bit. Looks like I wont have the new motor till next summer.
Imlooking to go around 135. But that is on the stock block. with the new motor and more boost 140+ would be nice. But i think 3:55's will do, then do the motor and go 3:42's. Gear change is nothing, I could do that at the track need be!!
Good to know that the 3:55's should work. Thanks.

I have 3.73 gears right now, since they are a tad on the worn side I will be swapping them out over the winter. Right now my car traps at 128 but with the set up I am looking for 135+ next year. I am probably dropping down to 3.42's, that shouldn't loose me much, give me a wider rpm band and hopefully hold up well. My redline is also 6200 rpm.

Paul

And this is in a m6?
I think 3:55's will be good for now, Like i said, gear swap is nothing, I dont mind doing them as i need so i dont loose to much.

Why not rev it to 6400rpm?? You have Heads and a Cam,right?When you hook better your mph should go down a little.

I have heads with duel springs, But I also have a motor with 50,000 hard miles on it, I want to keep the revs down. I also plan on other mods so Just 200 rpm wont be enouph (i dont think)

I really don't see a problem with you revving 4th out to 6800rpm.Look at Curtis's car.He spray's and shifts at 6800-6900.I would just suggest that you replace your valve springs this winter.

I have dual springs, Im more worried about stressing the stock 50,000 mile block. But I might keep them in for a little longer.

Yes M6.

Reving it any higher isn't going to gain me anything the motor is turbocharged and all my power is made from 2600 rpm to 5600 rpm at the moment

well the extra HP you pout on the engine will strain it just as much as reving it.

sounds like you alread know what to do, since you cant get a taller tire and dont want to rev it any more, so 3.55's would be your only option.

good call!