| |
Click on image for the lowdown. 
====
|
| |
0 members (),
80
guests, and
1
robot. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,049 Posts1,055,741 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: Dec 2017 Posts: 1,652 'Bolter | | 'Bolter Joined: Dec 2017 Posts: 1,652 | One difference is how the inlet and outlet of the pump is clocked. The other difference may be in the size of the check valves. The later valves may be larger then 57 and earlier.
Mike
| | |
|
|
| |
