impressive intake option, many guys don,t know exists

[grumpyvette]

I think youll be surprized at the torque and power range that a properly tuned cross ram has once its properly set up and adjusted. either 450 holley or 500-600 (carbs normally require a slightly richer jetting) while the guys are correct that the larger 383-406 sbcs will will be able to use the flow to better advantage , I don,t see any real reason not to install and test out that OFFY on the 327,350 size engines, remember the intake was designed to match the air flow of a 302 in the 4000rpm-7500rpm range to produce max power,so that same air flow will be reached at aproximately 500-700rpm lower, on a 350 or 1000rpm-1100rpm lower for a 406. now I have used the CRANE 114681 solid lifter cam as a good match to that intakes intended rpm range and flow charicteristics in the past with excellent results, but keep in mind that combo will only work to its best effect in a car geared so that the engine spends most of its time in that same rpm range (3500-6500in the case of a 383-406) which will require a manual trans or 3000rpm stall speed and 4.11-4.56 rear gears in most cases

 

Part numbers are 5893 base, 5903 for the dual-four top, 5902 for the linkage. both SUMMIT AND JEGS CAN GET IT FOR YOU