Corral Elite Member
Join Date: Feb 2012
Location: Maple Valley Wa.
The only place that you can not have shims is pinion depth. My guess is he is going the wrong way on pinion depth. He sees the pattern and thinks the pinion should go deeper into the ring gear, and it is actually the other way. I usually get 9 out of 10 to set up with the existing shim package, provided the carrier stays the same. Then that 1 in 10 that just kicks your ass and is a pain to get right.
1989 Saleen 414 358cid SBF 2.8L Kenne Bell S/C
26 X 8.5 Hoosier
Best 1/4 mile time 8.623 @ 159.82 mph with a 1.34 60' (5.55 1/8th at 128)
Best 1/8 mile time 5.384 @ 130.75 mph with a 1.29 60'
2001 V-6 5 speed Mustang 189k miles and counting
08' Bullitt #4097 N/A 325 RWHP <<<<<FOR SALE!