350???
 

OK folks....

I have a problem.
Thought this buick engine was a 350 from 75-77 because the engine code on the block is a 1241748.

I ordered cam bearings from rockauto for this app.
when I got them.....they were too big (roughly 2.26").
When I mic'd the block......the ID was about 1.86".

Soooo now i'm getting confused.

My head casting number is MP1243452.

WHAT THE HELL DO I HAVE HERE?!?!!?

Is it a marine engine??

SOMEONE HELP!!!!!

I would be pulling my hair out right now if it was not for the fact that i'm already bald.
:D

You can call T A Performance,1-480-922-6807,and go to tec support ask for Tim or Mike.They are the best support you can get.I"m rebuilding my 1970 Buick Skylark Custom 350.So I hope this helps you.I"m New at this,if you could send me a message so I know you got this,I would appreciate it.Thankyou