![]() I do have an ignition cutout switch, so I can spin the motor before lighting the ignition when its hot out. I like the idea of programming the ignition curve on a laptop, but my set-up is petty dialed in tight now. I also am thinking of going from a 6AL-2 to a Programmable 6AL-2, so I can retard some timing in 5th gear and have start retard. I' figuring it should add at least 2 -3 mpg on the highway with nearly a 900 rpm drop at 70 I'm pretty sure that mileage is all about top change for the better with Passon's new 5 speed that showed up last Tuesday evening. Heck, I painted them hemi orange and run stock valve covers and hardly anyone even notices the are not stockers.except Mopar purists! I love these heads, and the exhaust is right in the stock location. It makes 720 hp and just about as much torque at 5500 rpm with a little 600 lift hydraulic roller on a wide lobe centerline and relatively short duration.Īll while running a old sckool mechanical six pack that gets 12 mpg on the freeway at 70 mph, and 9 around town. 800 offset Indy 440-5I intake rocker (1.5 or 1. No, I have the regular port Indy EZ's that Dave stage 2 ported along with the intake in my 493" street strip motor. 360-1 heads with Indy valves, no block or head milling, use the following push rod lengths. The uses of the 440-SR range from a daily driver to a 670 HP 500 cid on pump gas (with heads in fully ported form with the 440-1 max wedge intake port opening). Indy 440-1 Ported Modern Cylinder Heads Flowed Porter Racing Heads Alum, 342/-, 2.25/1.81 - No Pipe, N/A, 74/59, 154/122, 232/160, 279/207, 318/235, 341/251. ![]()
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