M1 SP vs Air Gap

jimmyray said
Guess I'll chip in a question along the same line. I have a 408 stroker, 9.6:1 236/[email protected] .544 cam, hooker comps 1 5/8" into 3" exhaust, edel heads, 4000 dynamic 9.5" into 3.73 dana. Currently running a M1 single plane, Best time of 12.26 @ 109, 1.67 60' with slicks. Best time comes when shiftin at 5300!

I had been runnung a Edel (Carter) 600 on the street, and a Holley 750 on the strip. Carter gave better fuel economy, holley gave better time. The Carter had better low end torque. I recently switched to a DemonSizzler TQ, and where was a very noticeable improvement on bottom end torque, and it breathes much better than the Carter 600 on the top end. Idles better, off idles better, etc. Best carb yet, but not sure how it will do at the strip as compared to the holley.

I have a Weiand Stealth that still sits on my numbers matching 340 (in a crate) that has been port matched like my M1, but is otherwise stock. It will accept square or spread bore.

So the question is, since I am shifting below the upper end advantage of the M1, would it actually run better with the stealth?

To me that engine should run to 6500 rpm and make peak hp around 6300rpm. I am running a 340 with less cam stock heads but more compression, headman 1 5/8 headers and a 750 aed holly and it pulled to 6700 on the dyno. made just under 500 hp and 440 ft/lbs. Did you play with the timing were is it at? and you may need a bigger carb and bigger headers and a better intake. I am also runnig an m1 on my 2001 dakota r/t. the engine is stock except for the intake and exhaust and a superchips programmer. It pulls to 5400 rpm and hits the factory rev limiter, The m1 isn't that great of an intake for a single plane. Just my .02 cents on the intake some may not agree with me, but it has a small plenum, the runners have little taper (the cross sectional area as it gets closer to the head should taper down to help speed up the air as it enters the head)

Trevor