Reply to "#1493 motor update"

Hi Doug, thanks a lot for very specific feedback!

Yes, the heads are CHI, 3V version.

I dag again trough all the receipts to try and find more info on the valve train.
I found some receipts that could give some clew to what is actually in there, all of this are from 2002/2003:

From PI: Aluminum heads-$1995, Valves SS Exh & Int (Use old springs, retainers and locks) - $900, Intake manifold - $525, Oil Pan 10gt w pickup - $400

From Precision Proformance: Solid cams + lifters (custom grind) - $275, Dual roller chain - $57

Then, there is a much older invoice from 1997 from Pantera Specialists for Roller rockers - $275

From all this I think the cams might actually not be a roller but regular flat lifter; not sure about that.
From all the documentation I know that originally my engine was built with 351C 4V iron heads, hydraulic lifters and Sig Erson 351C High Flow cams (540 lift intake and 550 lift exhaust), so that means it was working well with hydraulic lifters despite the oiling modification.

If I would decide to replace the cams with something that should not give me troubles what would be the best recommendation considering my heads, carburetor and intake?
Would it be best to go back to High Flow setup or there is something you would recommend?