Stockish 340 upgrades, cam needed
oldkimmer
does the top of you piston look like this?
If so i have a warning for you.
Them are deep valve reliefs!
HOWEVER, there is a shelf that goes straight up in that valve relief to the flat surface on top. I didn't have enough valve to piston clearance with the mopar performance cam(.474/280 cam)
When i made the valve relief keep the same angle all the way up to the flat top of the piston. there was plenty of clearance. in fact i couldn't make it hit the piston pushing the exhaust valve all the way down.
Just a little fyi
oldkimmer
does the top of you piston look like this?
If so i have a warning for you.
Them are deep valve reliefs!
HOWEVER, there is a shelf that goes straight up in that valve relief to the flat surface on top. I didn't have enough valve to piston clearance with the mopar performance cam(.474/280 cam)
When i made the valve relief keep the same angle all the way up to the flat top of the piston. there was plenty of clearance. in fact i couldn't make it hit the piston pushing the exhaust valve all the way down.
Just a little fyi