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-   -   500 hp carb set up (https://www.offshoreonly.com/forums/general-q/228994-500-hp-carb-set-up.html)

ezstriper 04-23-2010 10:58 AM

500 hp carb set up
 
ok finishing my 500hp, +.030, factory cam, intake, but has stainless marine full headers, doing up a 800 DP, just cause I have one, milling the airhorn, where's a good place to start jetting wise on this setup...Thanks Rob...also how much total timing to run on 87 at times..

ezstriper 04-26-2010 05:59 AM

ttt

blue thunder 04-26-2010 08:12 AM

77p - 92s with a 4.5pv in the primary. This assumes air bleeds are fixed and original. You could also get the hp500 specs and do the staggered jetting.

34 degrees timing all in.

Griff 04-26-2010 12:58 PM

Holley 800cfm HP500 stock jetting is:

Primary - Port 81, Stbd 75
Secondary - Port 89, Stbd 93

6.5 PV in the front. The secondaries don't have a PV.

If I was rejetting, I would probably just use 77 primary jets and 91 secondary jets.

ezstriper 04-27-2010 06:22 AM

thanks guys, just what I needed...and just getting ready to put carb together !! Rob

bajabob 04-27-2010 07:31 AM

http://www.mercruiserparts.com/Show_...OR+AND+LINKAGE here mec setup:drink::drink:


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