Back about 17 years ago i built this 440 for my dart. didnt have a lot of money to do it at the time but i started with a low compression 1975 440 out of a new yorker. I wanted to raise the compression some so i found a set of used .030 over sealed power 2355 6 pack pistons. So i took the block and pistons to the machine shop and had the block bored and the pistons pressed onto my LY rods and the rest of the block work done. Had the bone stock 452 heads gone through and had the correct valve springs installed for the MP 284/484 cam i used. SO, i have the .030 over 440 with 9.5:1 compression with the stock unported 452 heads and the 284/484 cam installed 4 degrees advanced at 104. Holley street dominator intake, 1 7/8 fenderwell headers, race prepped thermoquad, 3000 stall and 3.23 gears. It probably doesnt have 1000 miles on the engine build as i drive it just for fun on the weekends sometimes. I want to get more out of it and want to buy some aluminum heads and a better cam. My first choice in heads would be the trick flows but not sure if i will be able to swing those, so question, what about these speed pro, pro max, edelbrock etc..? I would not be able to afford getting them ported so they would just be checked out of the box and then ran as cast. SO, will all of these heads out of the box outflow the 452's enough to be worth doing this? I thought i read somewhere on here or moparts that all the aluminum heads outflowed stock irons by quite a bit but want to be sure thats true and worth doing this.. Next question on the heads, what chamber should i get, closed or open? Like i said, currently with the 452's i am right at 9.5:1 and they are open chamber. I see most of the aluminum heads come in several different cc chambers, open or closed. Now the cam..Need to make the most of the higher flowing heads and need help choosing a cam..all ive heard is how the old MP purple cams like i have are good for sound but not the best for performance, so need help picking a better one. As for the gearing, i will probably step up to 3:55 0r 3:91. This thing may or may not see track time but i DO want it to perform! Thank you all for any help! If i had unlimited funds for this, i would get a lighter piston and all but i cant, and luckily the bottom end is fresh still.
