[PAUL K]

Originally Posted by pastry_chef

Len Williams 455 with stock heads rated about 425 HP.
http://www.lenwilliamsautomachine.co...ong_Block.html

Seems stock intake / heads are the bottleneck around that power level.

Fwiw


https://forums.maxperformanceinc.com...errerid=134156


A RAIV head and manifold flows considerably better and has a larger port volumes.