My oil pump seized on my stock block and I happen to have a built 331 block ready to go into the car. It is a SCAT setup with Keith Black heads flat top with slight recesses and almost 0 deck.
I am currently running Edelbrock Performer heads which are quite small on the stock block and would like to know if moving these over to the 331 makes any sense at all or should I just go with new heads and a bigger runner size?
Here are the specs existing specs on my current heads:
Combustion Chamber Volume (cc):60
CNC-Machined Combustion Chamber:No
Intake Runner Volume (cc):170cc
Exhaust Runner Volume (cc):60cc
Intake Valve Diameter (in):1.900 in.
Exhaust Valve Diameter (in):1.600 in.
Maximum Valve Lift (in):0.575 in.
Outside Diameter of Outer Spring (in):1.460 in.
Everyone I talk to says that these heads will choke out the 331 due to the small runner size.
I have been advised by the person who is working on the new setup to go with 210 runners with new heads, but that seems way to big for a 331. Everyone else that I talk to says that I should stay around 185 runners. Any thoughts on runner size? I plan to reuse my x-CAM if that matters to anyone.
Thanks so much...I hope the ask makes sense.
Should I reuse my heads? If so, what are the drawbacks?
Should I get new heads? If so, what size runner should I go with to be safe so I don't lose bottom end?