Thanks for that info Brian. I have a Truetrac 8.5 with stock axles and 3500 stall TH400 & never have wheel hop. 60 ft. is 1.60-1.63 range. Will stock axles hold up?
I was running mid to low 1.50s on that axle that was twisted in only 25 passes. After seeing that I will not try running much faster than low 1.6s to upper 1.5s on st axles. We are going 1.45-1 43 now and there is no way in hell the stk axles would take this
I always say the stock axle are good in a typical automatic A-body,running 11:70’s or slower. Anything like a trans-brake,clutch,slicks etc.,will add more blunt force at home plate,and therefore a slower or less-powerful car could twist them with any or all of those factors.
Thank you Ben and Brian, Exactly the answer I needed. Are stronger axles available in 28 spline to fit my truetrac? (3700 lbs, foot brake only and 3500 stall, mt drag radials)
Yes, better alloy. http://www.superchevy.com/how-to/engines-drivetrain/0905chp-moser-engineering-driveline-insight
I upgraded my 8.5 to 30 spline Moser axles. According to the article I linked, 30 spline Moser axles are good to 6200 ft. lbs. TQ X 1st gear X rear axle ratio? Aren't they leaving out the torque converter?
I'd say around a factor of 2, but that is below stall speed. Once a converter couples, torque multiplication ceases. So I'm thinking that a properly set up Race car leaves on the trans brake at full converter stall so converter torque multiplication is minimal. Then again, there is always some slippage, so some torque multiplication. I might be wrong though.
Your 350 is well within what 30 sines will handle, my 464 is north of 650 for both hi p and torque. I would be shocked honestly if 28s wouldn't hold up
Ben, I took your advice! Brian Trick is helping me out with 30 spline axle shafts, a TrueTrac limited slip, and Timken bearings! I'll post pictures of the install once it is all here.
Lifted the car last night intending to start prepping the axle for paint but instead discovered that there are oil leaks. Looks to me like a slow leak on each side of the pumpkin where the axle tubes press in, and a small one on the cover as well. The cover will get replaced with a TA girdle and new gasket, but what should I do about the axle tubes? Should the whole thing come out to weld the tubes to the center section? Are there other ways to deal with this? Thankfully, there are no leaks showing around the pinion.
The oil is not coming from where the tube is pressed into housing but where the hole is welded to keep the axle tube in the center section .
Those two dimple-like indentations on each side of the back of the center section you mean? Is that where the tubes are spot welded? Should I put seam sealer or something similar there?
