All,

I'm "going back" in time, and tuning my first Holley DP in about three decades. (I've been running EFI since then). I know it's impossible to "tune a carb" via a forum posting, but I'm interested in thoughts about ballpark settings, jets, etc.

Some basics: 428 FE, ported heads, stock valves, headers and (loud) sidepipes. Carb is an out-of-the-box 650 CFM DP (prefer this over a 750, since I'm mostly street-driving this clone). Lopey idle at 750 RPM, and 12" vacuum. Top-loader four speed. Manifold is single-plane, Edelbrock. Cam is Crane, .533" intake/.566" exhaust,208/218 duration. The car weighs about 2,400 (wet). About a 5,600 RPM redline (street driving).

Carb currently has 30cc accelerator pumps, 65 primary jets and 73 secondaries (and I suspect both will be pretty lean on the 428). Nozzles are TBD--not yet picked yet.

Thoughts--about jet size (primary and secondary), nozzle size (primary and secondary), and carb cam (color)? May 2013-26.JPGAgain, not expecting to get a "final tune" via this posting, but if any of you 428 rodders are out there, I'd welcome your thoughts.....