Jump to content

41-48 vs. 49-54 pistons for 6 cylinder


Jim Anselmo
 Share

Recommended Posts

The Pontiac parts catalog indicates 1941-51 are the same and early 1952 is too if they have a set screw pin retainer (later 1952 had a snap ring pin retainer). Then 1953 and 54 are listed with a different part number from those. The connecting rods apparently changed to reflect the new design too. Hope this helps, Todd C

Link to comment
Share on other sites

  • 10 months later...
  • 2 weeks later...
  • 5 weeks later...

if you are going to use aluminum pistons, make sure there is enough clearance, because pontiac straight eights and sixes with cast iron pistons could run with tighter clearances due to both block and pistons were both made from cast iron. aluminum pistons will expand at a faster rate. charles coker, 1953 pontiac tech advisor.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...