I'm just curious when I should be happy with my 60s. Its a stock bottom heads/cam n/a T56 car. Its cut a best 1.51 off a 2 step set at 6500 on a 27 x 11.5 Hoosier. Limiter is set at 7100. Car made 445.8 on a dyno dynamics (told 10 percent low compared to a jet) and guessing the raceweight would be 3350-3400 just guessing. I've never weighed the car. What do you think?

 

Not bad
Are you spinning any??
Any suspension mods?

 

not bad for a 6 speed car! my buddies auto car cut a 1.46 to run a 10.87@123 w/ h/c/I so your doing pretty good IMO!

 

I'm running strange double adjustables up front, bilstein rears with cut stock springs, after market lower control and panhard bar, no front sway, and a long arm mwc set up. Leaving a 6500 it spins very little but if I leave harder it spins and my 60s go down. The engine doesn't peak until 6900. Until I found the sweet spot it was cutting high 1.5x then dropped to the 1.51. I haven't got to run the car alot or play with the shocks any. I've got a anti roll bar still to install. If I can figure out how to get the car to hold the higher rpm I would think I should pick up a couple hundreths possibly.

 

That seem's pretty good to me.
Looking at your sig, I am assuming your not on the 10 bolt/3.42 gear rear?

 

What clutch are you running?

 

if your not peaking until 6900 have you tried running the car out to 7400 to see if it carries the power, if so bump the limiter to 7200.

i think more seat time and dialing the suspension in will yield mid 1.4s

-brandon

 

No, I'm running a 31 spline MWC 9" with the billet clutch posi and 4.30 gears. The clutch I was running then was a Ram Powergrip HD. I've got a 11" Monster Ceramic Race in it now thats never been to the track yet. The Ram HD did great though. It had probably 25k hard street miles and quite a few 6k plus launches. I haven't tried running the car that high of rpm. I'm still on the stock 02 bottom end so it kind of scares me with the 7100. I honestly haven't even attempted to shift off the shift light. I know I'm short shifting the car with it at the 7100.

 

what does it weigh? I cut some 1.4s back in the day when I had the T56/ stock 347 and 100 shot but @ 2900# raceweight.

I think I was leaving at lower RPM too like around 4500ish

 

I'd be guessing on the raceweight but maybe 3400.