| |
Click on image for the lowdown. 
====
|
| |
7 members (66flea, Gray_Ghost, Charles in CA, Wally / Montana, dt235sd, Christian, 1 invisible),
75
guests, and
1
robot. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,050 Posts1,055,757 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
|
| THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
|
| | | Joined: Sep 2007 Posts: 84 'Bolter | | 'Bolter Joined: Sep 2007 Posts: 84 | I have a GMC 336 that I'm using in a 1958 GMC 3/4 ton NAPCO I'm restoring. The engine is in the shop now. Anyway, the guys at the shop called me and wanted to know if I had an early, mid, or late GMC 336? The block serial number is 33603131. I believe this is an early block based on the Pontiac 370. It also has completely dished pistons. Not the partially dished pistons. Block casting number is 530046. Just wanted some verification from someone "in the know" to make sure I'm correct before I tell the shop to order engine rebuild kit. Appreciate the help.
Cheers,
Craig
1953 3100 | 1958 3/4-ton NAPCO
| | |
|
|
| |
