Of the 3 I'd go with the -1's and use a MW ported 440-2d Manifold. (correction, forgot you had a low deck!....I'd run a well ported Holley Street Dominator, you can get the ports near MW size) The only drawback to the -1 is you ony have a 4.25" + (.0?0") overbore so the big intake valves will be a little bit more shrouded than on a 400/440 block. It won't be a big deal with all those cubes though. The vics might take a bit of work(as stated in other threads) to be as good as expected, but IMO a max wedge with a mild cam and decent compression will work very well with that many cubes and will still RPM higher from better breathing with the smallish cam. The old TM-6 (383 Tarantula) is a good intake too but doesn't have as much meat to port and achieve any taper from the plenum like the SD does. You can use the M1 (I think AndyF has a ported one for sale) but to me if your starting to port from scratch the M1 is a lot tougher to port than a SD.

Headers would depend on the gear and stall, I like the 1 7/8" but with a 3 1/2" collector (Schoenfeld slip on) grafted on for a mild stall mid 3 gear heavy car with full exhaust combo.

Last edited by Streetwize; 12/13/17 01:22 PM.

WIZE

World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker!

https://www.youtube.com/watch?v=-mWzLma3YGI

In Car:

https://www.youtube.com/watch?v=PjXcf95e6v0