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429mustang · 03-14-2003, 10:55 PM

Right now I'm running an edelbrock 600 which seems a little too small for my setup and stutters sometimes. I still need to check my plugs to see how it's running, but I'm pretty sure I want to go with a 650. As far as being the right size, if a Holley 650 was good than would a Speed Demon 650 manual secondaries be about the same? Also, with the Perf. RPM dual plane intake, should I go with a 1 inch spacer (open or 4 hole????)?

03-14-2003, 10:55 PM	#4
429mustang Registered Member Join Date: May 2001 Location: westerville, OH USA Posts: 618	Right now I'm running an edelbrock 600 which seems a little too small for my setup and stutters sometimes. I still need to check my plugs to see how it's running, but I'm pretty sure I want to go with a 650. As far as being the right size, if a Holley 650 was good than would a Speed Demon 650 manual secondaries be about the same? Also, with the Perf. RPM dual plane intake, should I go with a 1 inch spacer (open or 4 hole????)? __________________ 1990 Notchback: BBK Ceramic Coated Full length headers, Dr. Gas 3"- 2 1/2" x-pipe, Flowmaster 40's/turndowns.