Pro gear life

Mike Taylor 3601 · 01-02-2015, 11:02 AM

I had 2900lbs. nova 355 nash 5 speed 3.25 1st 5.57 rear had 12 bolt all MW axles, spool,steel caps, ran 6.12-6.20 1/8 60' 1.26-1.28 usually got about 35-50 runs.
My problem was that the pinion would bend and lose backlash on one side and backlash be loose when pinion was turned 180 degrees. once I figured out what was going on by accident was pushing car and could barely push then would free up then bind again. would keep a check on it by checking backlash on gears just by jacking up and feeling of it at driveshaft.
I believe it did this because 12 bolt not having support on rear of pinion like a 9'' does
I had Mc Leod soft loc and normally ran 300-400lbs base on pressure plate and no counterweight added to levers.
Mike Taylor 3601

01-02-2015, 11:02 AM	#1
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,372 Likes: 357 Liked 308 Times in 103 Posts	Re: Pro gear life I had 2900lbs. nova 355 nash 5 speed 3.25 1st 5.57 rear had 12 bolt all MW axles, spool,steel caps, ran 6.12-6.20 1/8 60' 1.26-1.28 usually got about 35-50 runs. My problem was that the pinion would bend and lose backlash on one side and backlash be loose when pinion was turned 180 degrees. once I figured out what was going on by accident was pushing car and could barely push then would free up then bind again. would keep a check on it by checking backlash on gears just by jacking up and feeling of it at driveshaft. I believe it did this because 12 bolt not having support on rear of pinion like a 9'' does I had Mc Leod soft loc and normally ran 300-400lbs base on pressure plate and no counterweight added to levers. Mike Taylor 3601