M1 or Port-Matched LD4B on 408

MuuMuu101 said
I would think the EFI would give it better manners at the low rpm and since it's a big engine there will be plenty of torque down low. I would also think that if the LD4B is so restrictive, the M1 may not lose that much down low. But I have no personal experience with it, yet.

I would think so too. When tuned properly, EFI "adds" more off idle and low end than you expect.

Case in point: I ran this giant M1 single with multiport on a 9:1 360 Magnum in my Duster.

When i installed a Comp XE274H cam [230 int./236 exh .520/.522] I was concerned it would be a dog off the line with the huge plenum, adapter and 950cfm throttle body since the Duster was Rocking 3:21 and 9" wide 28" tall tires. lol those worries ended quickly. Stone cold I could fire it up, back out of the driveway and lay a 20ft patch a 1/4 throttle. lol