Cobra Power Upgrade .... 538hp/502ftlbs

[McMahonRacing]

Thought you guys may get a kick out of this link ..... putting a new power plant in # 67A Cobra Spec Racer .... Pat

http://www.ffcars.com/forums/17-factory ... -dyno.html

[jadams]

Are those dyno numbers at the wheel, or the crank? Either way that sounds like a major improvement over your previous motor.....but if those are at the wheel then that thing will be tough to keep the tires on the ground

[McMahonRacing]

Engine Dyno .. so at the crank .. will be hard enough even at that ........

[breakaway500]

I think you need wider rear rubber,so those V710 295's will be useless for you...

[McMahonRacing]

Spent all my $$$ on the new motor, just gonna have to suffer thru the year w/ little sneakers ....

[dradernh]

Have you given any thought to a turbo running moderate boost to get that torque curve flattened out a bit more? Should be good for a coupla 10ths coming out of the Toe & the Bowl; wouldn't hurt starting up the long straight at Mosport either!

[McMahonRacing]

no power adders for me ... simple carb, mech. fuel pump & MSD ... more than enough to get a 2800 lb car & driver combo in trouble just as it is esp. w/ a jump from a little 345hp FMS crate motor w/ 20K miles and 60 Open track events on it ...

[breakaway500]

400ft.lbs at 2500rpms..what's not to like? That car should pull very hard and smoothly with that powerband. Not quite Cummins torque,but pretty close...

[McMahonRacing]

yep ..... 400 ftlbs right off the bottom .... even that little is more than the old motor had on a very good day .....

[John F]

You're absolutely right, Pat, I won't have to lift on the straights anymore