riley_smitty
New member
Hey guys,
This one part has been a thorn in my side for a while. Tons of mixed messages. the book says shim stock spring by ,i think, 0.03" and you can get 6000 rpm. others in the forum say the 302 exhaust springs are no better than stock springs. just need some clarification.
I will be running a 264/274 clay smith cam. the clay smith cam shaft calls for 120-130 lbs of closed seat pressure. my theory is that i take the 302 exhaust spring that is spec'd at 100 lbs closed pressure and shim the spring to reach the 120-130 lbs req'd for the cam. I wanna stay away from dual springs as it adds a lot of money to my budget and it doesnt allow me to reuse my original retainers and locks and requires more machining to the head. Let me know if you guys think my theory is correct/ would work. i just need the engine to rev to 5000-5200.
Thanks guys
This one part has been a thorn in my side for a while. Tons of mixed messages. the book says shim stock spring by ,i think, 0.03" and you can get 6000 rpm. others in the forum say the 302 exhaust springs are no better than stock springs. just need some clarification.
I will be running a 264/274 clay smith cam. the clay smith cam shaft calls for 120-130 lbs of closed seat pressure. my theory is that i take the 302 exhaust spring that is spec'd at 100 lbs closed pressure and shim the spring to reach the 120-130 lbs req'd for the cam. I wanna stay away from dual springs as it adds a lot of money to my budget and it doesnt allow me to reuse my original retainers and locks and requires more machining to the head. Let me know if you guys think my theory is correct/ would work. i just need the engine to rev to 5000-5200.
Thanks guys