Originally Posted by Blusmbl
Originally Posted by an8sec70cuda
[quote=Blusmbl]Nick...my 727 is still living, but I don't race my car very often. I killed a sprag a few years ago that took out the case. It let go mid wheelie in 1st gear, crunched the oil pan, but drove back in the trailer.
It still has stock shafts in it, but it wouldn't surprise me if it broke one on its next pass.
I have a 5 pinion steel planet, billet steel drum, non LBA Turbo Action transbrake, deep cast aluminum pan, etc. Nothing real fancy.
My car will go 8.60s, but my best 60' is a 1.30 (may not have tripped the beam w/ the front tire?).There's a fine line b/t wheel spin and wheel stand w/ my combo.


That's helpful too, thanks Chip! I'm heavier but am definitely going to be making less power and torque than you.

Do you normally run your car at the track on slicks or the radials?

And one other question, is the LBA stronger for situations like those, or would the sprag have failed anyway even with a LBA valve body?

Nick...the sprag was probably damaged on one of the many passes when I was sorting out the suspension. I would rather have a LBA valve body in it honestly, but I'm using what I have.
I always run radials. I tried slicks several years ago and it didn't work well at all. Nothing works if you have too much SLR.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax