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I have the older Edelbrock. They just came out with the newer one when I got it & I didn't want to put another $500 down to get it. I bought it several years ago when I could afford to put money into it (it isn't cheap) and it's been waiting for the rest of my car to catch up. My mechanic...

Norm, 1000 cfm is way too much. It adds some HP gain, but very little over 700 cfm. That's just air flow, the injectors have a max flow of 29 psi, both of which can be dialed back via the mapping for daily driving and via the foot feed :). The O2 sensor and the internal chip for the EFI...

Pat - The cam specs are for mild performance gains with increased fuel economy and high torque. Where I pick up the HP is the Edelbrock RPM heads, RPM 2 Intake, flat top pistons (10:1+ CR), balancing the crank assembly, power pullies, full length headers (3" chamber/2.5" dual exhaust) and EFI...

Thanks guys. I'm just doing some math to try to figure it out. I have a 5 speed tranny I'm putting in that has a .59 5th gear. I want to try to use this gear as much as possible for daily driving and plan to use it as low as I can, def in the mid 40's and up. I've calculated that in 5th gear...

If you want to keep the GTO original and up the HP and torque then I recommend balancing and blueprinting the motor, change the pistons to a dish or dome and a thinner head gasket for higher compression, and have the heads fully (re)ported using 21st century tech :). These with the original cam...

I have a 1967 Mustang that weighs approximately 2950 #s, about the same as a Prius. What I've been trying to do is calculate how much torque it takes to move the car down the road at a given speed, say 40 mph and up. I've looked on the net for how to calculate the minimum torque needed and...

I do want to restrict the motor some in the first gears to max fuel economy. The motor should make about 295 ftlbs of torque at 2000 rpms when mapped for performance. That's more than I need for cruising down the road. By restricting the motor I can get that down to around 200-225 for economy...

Thanks Guys. I bought the 5 speed as a full conversion kit and at that time there weren't 6 speed kits. I planned to use it like 2 4 speeds, utilizing 1-4 for performance and 2-5 for economy. It's an old trick we used to do with 4 speeds, drive around like a 3 speed using 2-4 then when you...

Hi. I'm building a 1967 Mustang with a 289, multiple mapping Edelbrock Pro Flo EFI, RPM Heads, full length headers with 2.5" exhaust, a 5 speed (2.95 1st to .59 5th gear), and a 9 " rearend with 3.25 gear. I'm trying to get as much mpg as I can and still have some fun performance with around...