About the lump port head...I've been speaking with Larry at Cliffors for some time now about a build on mine and he tolf me not to waste my money on the lump port because all their builds make power at under 5,000 rpm and the lump ports are for above 6,000 rpm.He said to go with a stock head but with 1.94 intake valves and the standard 1.50 exhaust valves.The 1.60 exhaust valves rob power on their setups.Thought I'd relay that info to you.
Don't waste your time listening to Clifford. If I had stayed with their suggestions I would have still been running 15"s in the 1/4 mile when I was naturally aspirated.
Having a better short turn radius (enter lumps) is going to help engine power at all engine RPMs', from idle to what ever your engine RPM's to.
Guys here on this forum could help you out with better informed decisions.
You need to talk with the other Larry (AKA Twisted6) about lump ported heads. More current info with guys that run on the street & on the track.
Sissells, Mike Kirby, knows exactly what RPM's lump ported heads start pulling with authority over a stock head. If he has time, he would be wealth of knowledge to receive.
