How many are running factory efi on your magnum swap?
On my '68, I'm using the factory ECM originally for a 1998 3/4 ton truck w manual trans, Hotwire Auto's Hot Rod Harness(4 wire hook up), Ford 40lbs racing injectors, a mildly ported Airgap intake with Massaged Eddie heads & a Hughes Engine's Big Gulp throttle body. The hydraulic roller cam is ground with a 108* LSA and just over 250* @ .050 duration.
The ECM was reflashed to correct the fuel and spark tables for my application. The car chassis dyno'd at 382 hp @ 4580 rpm & 525 ft lbs of torque at 3541 rpm at the rear wheels. This is through full exhaust including aftermarket metal matrix racing cats.
It gets around 14 mpg around town and 17 mpg at 70 mph on the freeway. It does have an overdrive trans & lock-up converter, but I only use that on the freeway.
On my '68, I'm using the factory ECM originally for a 1998 3/4 ton truck w manual trans, Hotwire Auto's Hot Rod Harness(4 wire hook up), Ford 40lbs racing injectors, a mildly ported Airgap intake with Massaged Eddie heads & a Hughes Engine's Big Gulp throttle body. The hydraulic roller cam is ground with a 108* LSA and just over 250* @ .050 duration.
The ECM was reflashed to correct the fuel and spark tables for my application. The car chassis dyno'd at 382 hp @ 4580 rpm & 525 ft lbs of torque at 3541 rpm at the rear wheels. This is through full exhaust including aftermarket metal matrix racing cats.
It gets around 14 mpg around town and 17 mpg at 70 mph on the freeway. It does have an overdrive trans & lock-up converter, but I only use that on the freeway.