DustedUBad
Member
Hi guys new to the site, big mopar fan here, got a Duster with a 440 that I want to get into bad bought it in April, its got big valves and port work (Iron heads), and a comp .550 cam, 3500 stall convertor, I want to make it nastier than it is, but right now I have to finish restoring my truck, and in the process, I am putting a big block over in it. This is my first rodeo inside a Chrysler big block. My original plan before the Duster was stroke it out and make a big motor, but now I just want it to run and be a decent pulling street engine. The bottom end is a stock 11,000 mile 1975 motorhome engine clean as whistle when I cracked it open, it was a double roller chain engine, I hear not all had that, six pack rods and all. The engine has no valve reliefs, and from what I hear most of those engines ran in the low 8s on compression, I have a set of 440 source heads, that I gasket matched the ports intake and exhaust, and straighten the intake runners up, I put a lunati voodoo cam in it, hydraulic adv dur 262/268,.475/494 lift 1400-5700 rpm operating range, I used a edelbrock performer that I gasket matched the ports as well, topped off with a summit 750 carb. I plan to use hooker competition longtube headers also. I was wondering what kind of power do you guys think the engine will make, I know there are many variables, but what kind of ball park could I expect, I imagine, going from an 88cc head to an 80cc the compression should be in the 9's. Thanks for any input.
