[Jay S]

Originally Posted by 77 TRASHCAN

Jay, I will likely "re" build one of my 557 stock 400 engines. Using mostly ALL stock parts. I have 2 557's in my "too big" parts inventory(!) One is my TA 400. I had to drive it some, with the#7 "exhaust lobe in failure mode. It's been on a stand since 1992, untouched.

Second was in my (late Pontiac buddies) 78 Catalina, that he special ordered.

My initial plan will to thoroughly clean the block, then have it checked for cracks,
Then de-burrr the whole block. The main focus will be on chamfered the oil holes in the air saddles and the dowel alignment holes in saddles, also.

Pretty much a stock build, with many details....

Jeff have you had the main caps off both your engines? Do they both have dowel pins to index the mains?

I am still of the opinion that above 350HP do main studs on these 557 engines, with dowels or roll pins.

You know me, I’d love to see the number matching engine back in the T/A.