216 main bearings
Andrew as Mike stated earlier the original main bearings were supplied for either line boring or hand scraping ( two different pt/numbers )
Here are some pt /no's for std mains .
Blitz Parts book ( for hand reaming )
Front main 604003
Front int 604004
Rear int 604006
Rear 604535
Nasco ( precision finish )
F 3847064
FI 3847201
RI 3847606
R 3847068 ( 40/47 )
3847067 ( 37/39 )
Repco ( sets for domed piston engines )
1937/39 4M9559
1940 4M9979
It appears that the front 3 mains went right up to 1947 but the back main kept changing hence the different sets.
When ordering check the width of the rear main .
I have several sets of GMC mains , I will cross reference the numbers to see if they match.
Regards
Jim S.
__________________
jim sewell
cmp and cckw
Last edited by jim sewell; 22-03-09 at 02:57.
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