i've heard those work great with greddy 1800lb piston return springs. also, get a high flow alternator, they wont spool up battery backpressure if you dont have a good one, i reccomend an HKS one. oh yeah, make sure you drill out yur valve cover for cooling, cus those 7.3l vtec's overheat like a bitch sometimes, personally i would install some valve fans if i were you, but who knows. carbon fiber hydraulic valve springs are a must, it will really open up horespower. sand down yur piston walls too, it will have so much less friction, its really a great improvement too, drill cooling holes in the tops of your pistons too, that helps cooling big time. oh yeah one more thing before i go, i would recommend a rallyart high performance electric cam motor, cus the motors that spin the cam on the ka73's just suck. aight good luck with yur build.Originally Posted by santacruz77
Reply With Quote