I'm trying to find information on the correct block and cyl head casting #s for L98 F Bodies. My "sponsor" is going to hook me up with a rebuilt L98 long block, but we want to make sure I get an engine that originally came out of an F Body instead of a Caprice or something. It is really important for me to have a "correct" L98 F Body engine due to the legality under autocross rules! Sneaking in some 4-bolt 350 block might not go unnoticed!

Anyway, after poking around here and on the 'net, the only thing I can find are cylinder head casting #s: 14101083 and 14096217. Are those the only two possible offered stock in the L98 Camaros and Firebirds?

Does anybody have block casting #s? I haven't been able to dig up anything reliable as far as those go.

TIA!

Pat

 

http://www.mortec.com/castnum.htm

this might help.

https://www.thirdgen.org/techbb2/sho...+block+casting

 

14093638

happens to be the casting number for l98 out of 89 firebird that i have.