18c
 

wow that's what my car runs but at 2440#! i checked T&D web site and my rockers are the wrong offset for the 18c, i saw a set on ebay will check to see if they have shaft rockers, Zip i do have to change pistons, on brodix web they show a dyno comparing a ported t1 and a ported sts18x and it was about 100 hp better!

GM 18 degree
 

Zip a guy has a set of GM #363 18 degree heads with T&D shaft rockers he wants to trade for my 23 degree heads, are they any good? thanks Doug

Check CFE racing products....they have 18, 15, 12 and 10 degree heads. Check the flow #'s. I'm using a set of the 18 degree heads, and they work well.

CFE
 

Wow I never looked at CFE but they are very nice heads that do flow, thanks for the info. Doug