Air Gap vs. M1 Single Plane For Stroker

I disagree. I’d run the RPM and use a spacer if possible. Nothing about the combo (to me anyway) says single plane usage.

For a single plane. IMO. The cam is small, the Edelbrock heads are stock on the ports, the car is heavy. I think the stall is a bit high for street duty. You didn’t say what size tire you have.

I like the gear ratio a bit and the extra rocker lift is a good move. That’ll help up top.

If the car was light weight, more gear & cam duration by 10*’s min. Then I’d do a single plane and I’d feel on the boarder line about it. I get this from reading last members combos and there intake swaps with more engine than what you have ether in the build minus the engine size or similar sized engines.
Performer rpm or M-1 intake
(Post 13 as well mentions a member)
M1 to Air gap
Double check the 11 second thread sticky in the racers forum.

UOP said

A couple years ago when my car still had the 360 I was going to do a turbo setup so I swapped my RPM Airgap for an M1 single plane. Big mistake. The car lost 3 tenths in the 1/4 mile I could never recover, no matter what kind of tuning I did. The loss of torque was noticeable even on the street. It made the car feel sluggish down low.

IMO swapping to the RPM Airgap would be a good move.

Click to expand...

Compare test results number 2 (RPM) vs number 5 (Holley Strip Dominator which the M1 is a improved on copy) and compare the HP vs Torque numbers. The cam was a rather stout one on (IIRC) MM lobes from Comp Cams.
Dyno-Testing Small-Block Intakes - Induction Extravaganza - Mopar Muscle Magazine