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hotrodcbx · 11-14-2021, 07:39 AM

I am running a Holley 600 cfm with vacuum secondary on my Mark Kirby built 286" flathead. Runs super strong after some tuning.
Details.... 12d initial advance... 26d total at 2000 rpm.... boost control retards timing
1-3d per pound of boost .... total timing @ 5 lb boost is 18d
The Holley has the Weber conversion which uses Weber jets for infinite tuning ability..

11-14-2021, 07:39 AM	#15
hotrodcbx Senior Member Join Date: Jul 2010 Posts: 136	Re: supercharger carb info needed I am running a Holley 600 cfm with vacuum secondary on my Mark Kirby built 286" flathead. Runs super strong after some tuning. Details.... 12d initial advance... 26d total at 2000 rpm.... boost control retards timing 1-3d per pound of boost .... total timing @ 5 lb boost is 18d The Holley has the Weber conversion which uses Weber jets for infinite tuning ability..