Another valve spring question...

Modern Muscle said

dont know who told you it was a drop in but we use shims to get the 1.80 install height for the 1511s

Click to expand...

Thank you very much Chris!

I won't name names but there are vendors out there that insist they do.

That answers part A of the question.

part B - Now how do you deal with the issue that the PSI on the intake side will be compressed 80/1000 to meet a 1.8 install height - is the increase in seat pressure nothing to worry about?


Appreciate the heads up on the PACs as well....