[Skip Fix]

My first 455 with the RAIV heads the machinist swapped the pistons on purpose. He was an old Pontiac NHRA Stocker and felt that helped make a little more power.

[Stan Weiss]

Originally Posted by Skip Fix

My first 455 with the RAIV heads the machinist swapped the pistons on purpose. He was an old Pontiac NHRA Stocker and felt that helped make a little more power.

Skip,
Back in the day that was SOP on an NHRA Stocker.

Stan

[TRADERMIKE 2012]

Originally Posted by Stan Weiss

Skip,
Back in the day that was SOP on an NHRA Stocker.

Stan

What is "SOP"? Plus, the person who originally rebuilt this Engine, post factory, knew what they were doing, now that I hear things like this!

Here is what they did:
(1) Pistons on backwards, a racer thing.
(2) Water Jackets are blocked in certain areas along the Block only, did not see any ones blocked on the Heads. Pontiac modification, for lack of better terms!
(3) This 1967 Pontiac 428 ci HO is supposed to have a Quadrajet Carb., However this one uses the 1966 Intake and Tri-power ones!
(4) Should have a 066,067,068 type Cam, this came with the 1956 only Tri-power Cam, that can only be purchased over the counter, generally racers would know this!
(5) This Block bears special #'s and letters, by the second builder, on the P.S front left side of the Head, upside down and along the left edge. STANDARD OPERATING PROCEDURE, JUST FIGURED IT OUT ,THANKS