Discuss 600 or 650 double pumper? on AllFordMustangs.com, the place for Mustang enthusiasts.
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i have a built 306 and currently have a holley 750 on it witch is too big and swamps the motor right full of gas below 3 grand. would a 650 double pumper or 600 double pumper be a better choice?
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1988 gt
306 with forged pistons, brodix 5.0R aluminum heads, comp cams pro magnum roller rockers, edelbrock victor jr intake, holley 650 double pumper, comp cam, msd 6al box, msd distibuter, msd coil, msd plug wires, bbk pullies, bbk long tubes and catless x-pipe, flowmaster american thunder exhaust, frpp alum driveshaft, eibach pro launch kit,
lakewood 70/30 struts, lakewod 50/50 shocks
2006 v6 coupe
shelby spoiler
S&B CAI
Screamin Demon coil
define major mods...the motor is already fairly modded. are you talking about super chargers and turbos? cause the motor is gonna stay n/a but i'm looking into upgrading the heads, valves and rockers.
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1988 gt
306 with forged pistons, brodix 5.0R aluminum heads, comp cams pro magnum roller rockers, edelbrock victor jr intake, holley 650 double pumper, comp cam, msd 6al box, msd distibuter, msd coil, msd plug wires, bbk pullies, bbk long tubes and catless x-pipe, flowmaster american thunder exhaust, frpp alum driveshaft, eibach pro launch kit,
lakewood 70/30 struts, lakewod 50/50 shocks
2006 v6 coupe
shelby spoiler
S&B CAI
Screamin Demon coil
I'd go for the 600 with mechanical secondaries too. With mech. secondaires, you get crisper throttle response if you shove your foot to the floor from idle or light throttle.
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600 or 650 double pumper? 
