383 rebuild - kinda whimpy on the dyno?
Valve springs:
Precision Engine Parts - PEP - Las Vegas, NV
Item #: PSK-272-3-7
1.46odx1.06id*
[email protected]
Builder said “they use these springs all the time and they shouldn’t be a problem”. 110lb pressure at seat and 230lb open.
I don’t know... a couple of sources told me this isn’t enough of a spring.