I have a 64 Plymouth with a iron headed 440. Motor is stock stroke 440 with 452 heads ported by Porter Racing heads 2.19 int & 1.81 Ex valves max port job. soild flat tappet cam .585 lift 265 @ .50 dur. Dome ross pistons M1 intake with a 950HP holley 9" PTC converter 4.56 gears and 29.5X 9 in slicks. Car weighs 3650 with me. Best ET 10.88 normal 11.0s. How much would I lose putting on A&A stock port crossram on? Thanks Mike

I think you would lose about 30 hp and you would add some weight to the nose of the car, so maybe you'll drop a couple of tenths.

That's not as bad as I thought it would be. Thanks

My 500" 440-1 motor lost 60 hp and 45lbs of tq with an Indy 440-25 x-ram and 2 750 AFB's over an Indy 440-3 with and 1150 Dom. M-1 and 950cfm should make excellent power even on a bigger motor.

I have swapped a stock M.W. cross ram intake and stock unported M.W. cylinder heads with dual 750 Carter OEM carbs to a set of 906 heads with a Eddy TM7 intake and a Holley 750 D.P. carb, that car slowed down .18 ET and 2 MPH in the 1/4 mile by going smaller on the heads and carb size I don't know of anyone who has done the exact same swap your asking about but I have tried a bunch of different size carbs on a motor similar to yours including going from a TM7 with a 600 DP to 700 DP, to a bunch of different bigger carbs and then to a six pak set up and ending up with Mopar M1 single plane dominator flange with a Holley 1050 CFM Dominator carb on the same car within three months of each other. The car ran quicker ET and more MPH with each larger size carb. change Do it and let us know how your car reacts to the change Crossrams are cool and look good also

Thanks for the replies. The many reason I want to swap is for the cool factor. The right thing to do would be to build a bigger motor with better heads and crossram but that's not in the cards yet.I just don't want to slow down to much.

If you're interested in a factory original "unmolested" crossram, drop me a PM. Intake only - no carbs, linkage, etc..