Reply to "Holley Strip Dominator angled carb base..."

Jon, a dual plane manifold needs the larger carburetor more so than the open plenum manifold. I would start with the 650 carb you have now, and only go to a bigger carb if you're unhappy with the upper rpm performance of the smaller carb.

Footnote:

I feel compelled to write this footnote here. Not necessarily for Michael or Jon, but for anyone who may be reading this thread. I ask the long time members to forgive me for being redundant ... or "preachy".

Before an owner goes revving the motor in their Pantera above 6000 rpm, please make sure its got ARP nuts on the rod bolts, replacement valves, a replacement crankshaft damper, and sturdier push rods. The engine should be retrofitted with the Cobra Jet oil pump suction tube and a windage tray if it is not already so equipped. It would be reassuring if a strategy for controlling the amount of oil flowing to the valve train were also implemented.