M1 or Port-Matched LD4B on 408

rumblefish360 said
Do you have the M1 single now?

I have it and it's sitting on my shelf. I believe it's unmoddified. It's what was on the engine when I bought it. It was a bone stock 360 with cast internals and a Paxton supercharger. I don't really want to buy another intake.

rumblefish360 said
@360duster Is you car full weight and interior?
Can you tell us about it some more. Cam size etc..
Thanks.

Car weighs about 3500 lbs with a full tank of gas and no driver. No back seat. Full 6-point cage with swing out arms.

I honestly don't know anything about the cam size. IMM said they gave me the cam spec sheet when they gave me the engine, but I've never seen it and it's not in my folder. But the cam is pretty aggressive. The car needs about 5-10 minutes to warm up before it will want to move. Otherwise it will die.

gzig5 said
I thought that some of the low end advantage of a dual plane intake was negated with an EFI throttle body and a single plane was the way to go??

I would guess that the M1 would be much better at the top end and the EFI would help maintain the low/mid range HP and drive-ability, but that is a guess.

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.