Magnum M1 2bbl vs. 4bbl

jos51700 said
I've been wondering this for a long time, searched, and recent discussions have prompted a post.

Let's assume that we're running EFI in any case, so the Airgap intakes don't count. Mopar M1 only.

The Hughes Edelbrock RPM airgap intake does have the injector bosses cast in, so could include it if you want. Edelbrock does not directly sell that one though, so you have to get it from Hughes or someone who sells Hughes parts like Mancini Racing.

jos51700 said
Does the 4bbl M1 intake allow the use of the OEM-style alternator bracket? Does the 2bbl?

If you are asking about the Magnum alternator bracket, it does not mount to the intake manifold iteself, other than the one reinforcement bracket on top that also serves as a support for the truck air cleaner on those trucks. So, yes you can mount the Magnum alternator bracket to Magnum heads when running an M1 single plane two barrel or four barrel intake, and the Hughes intake too.

But, the M1 single plane four barrel intakes were offered in several configurations so you have to know what you have or what you want. There are LA intake mounting versions that were available with or without EFI bungs cast in. Then, those were offered with LA thermostat location and bypass hose OR Magnum thermostat location and bypass hose.