[2manyT/A'S]

Originally Posted by transam1972

if there are any engine experts out there please feel free to comment..as I now know I have a 1973 SR block, the heads remain a bit of a mystery to me...manufactured 5 months after the build date, yet 1 1/2 years old before the possible installation of the 1973 date coded SR block..were new heads shipped fully assembled?..these could have been off the shelf or possibly rebuilt?..are there any easy ways to tell?..are there any GM part#s to look for after removing the oil drip shield?...at 58k does anyone advise removing a head for visual inspection of the pistons?...the motor was running fine, preparing for the distributor change...obviously I want to Attachment 352639

Attachment 352640

Attachment 352641

Attachment 352644

Attachment 352645do whats best and right for this motor to keep it that way...thanks!!!

If your motor was NOT leaking or burning oil,with even compression and no blow-by,I'd leave it intact.......the only thing to consider may be valve oil seals....which can be done without removing the heads.....

Opening it up will only create a 3-5000 dollar can of worms that may NOT need to be opened at this point in time....