View Single Post
  #3  
Old 02-02-2011, 06:09 PM
69SSZL1's Avatar
69SSZL1 69SSZL1 is offline
Yenko Contributing Member
 
Join Date: Feb 2005
Location: Ca
Posts: 619
Thanks: 6
Thanked 108 Times in 31 Posts
Default Re: Do OEM main bearings have date codes?

Those look to be original. Here are my original bearing numbers:
Front main bearings: (A) in circle, 55084 GMM 400 15C9. Other half: (A) 63377 GMM 400 16C9 0006

Rear bearing:57798(B)GMMA 295Q8 other half: 57799 (B) GMMA 001 3H9

Rod bearing: (B)GM AT-20 P-16 10 68 other half: (B) GM AT-20 P-44 12 68

So yes, they are date coded and original.
__________________
1962 Oldsmobile Jetfire, Factory all Aluminum V8 Turbocharged and Methanol Injected TURBO ROCKET engine, 4 speed Hydramatic, 4 link rear suspension, 3.36 Anti-Spin differential, California car, PS, PB, PW, AC, Jetfire 2 option package.
Reply With Quote