How much valve lift from a X/J head

godfatherofchry said
if the valve Gide is good Y use the seal i don't.

For a race only i guess i could do that. Yes the guides are brass/Bronze? less then 5000 miles on them.

I wasn't planing on taking these head to the machine shop.........so i guess that could be an option.

I know that crushing the stock valve seal, i can barely test flow at .600" of lift :happy7: