Quote:
Originally Posted by CNUDIGIT
Hey guys i recently purchased a 1972 grand prix model J, looking to restore it it came with rebuilt original engine 400, new mild cam, racing carb. I have a small leak around the main seal where engine and trans connect i put in some stop leak, waiting to see what that do, what are some tips you guys have used, also should i rebuild that trans or upgrade to turbo 400 4 spd with overdrive. one last thing should i use a lead additive to the fuel since gas back then did have lead in it. Thanks
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Welcome to the forum.
If the engine still has the original heads, (code 7K3), the valve seats are already induction hardened...believe the first year was '72 for this.
Your stop leak won't help. If it's the rear main seal, you can go with a neoprene seal like the BOP, or if it were me, I'd go with a Graphtite rope seal.....Pontiac Dude sells them. It could also be the rear pan seal that's leaking.
If your trans isn't broken or leaking, then run it as is.
http://bopengineering.com/
http://store02.prostores.com/servlet...ude/StoreFront