Joined: Mar 2010
Location: Kingston Springs
differential help...im at a loss
I have built a 8.8 1x before never had an issue so i thought since my car is a track only car id pick up a spool and c clip eliminators and swap my 4.10 gear with an set of 4.56
i guess i should of left well enough alone
i picked up a used set of strange 33 spline with c cplip elim and a strange light weight full spool
the 4.56 gears were used in my car by the previous owner and then replaced with 3.73 and then i put the 4.10 in last year
well the install went real smooth great mesh pattern back lash about .009
well i fired her up on jack stands and let her roll.... no leaks
but when you get in 2nd or 3rd and let out of the gas knock knock knock upon acceleration fine but when you let off knock knock knock
it is coming from the diff.
well i tear it back apart set back lash a lil tight .005
fill it back up same thing this time i took it down the road same thing when i get out of it.
i did not check run out on ring gear but i pulled it up by hand
i wonder if the ring n pinion may be bad heck i dont know
88' coupe 387 ci poor boy stroker eagle 3.85 crank stock 351 rods (5.956) stock 5.0 pistons (4.00) c-4 built by PTC, 4.30 8.8 rear end 1.49 60 foot 6.99 1/8 mile 97.18 Mark Sullens E-85 carb UPR suspension