Can anyone tell me the difference between the regular Holley 4150 650 double pumper compared to the HP series? The cost is alot more and was wondering if there is that much performance gain or is it just more adjustable or what? Any suggestions to which one would be right for my combo? You can see my combo at
http://www.louisianamustangs.com I'm doing away with the fuel injection because of ongoing trouble shooting.
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1989 LX Coupe, N/A 306. Pro-M 77mm,70mm T.body,Edelbrock RPM intake,TrickFlow heads,Crane cam,Eagle rods,10.1 pistons,Hooker long tubes,MSD 6-AL,C-4 W/3800 stall,4.11 gears,SSM's 12.33 @ 110 mph. Car is still being dialed in. Pictures and info on my webpage. (LA Mustangs)
http://www.louisianamustangs.com