Re: M1 dyno verified Hp #s on a 360& observations

From: Aaron (acolona@i-55.com)
Date: Wed Oct 27 1999 - 18:37:35 EDT


I am installing a 500 lift custom ground cam in my 318. I can't find my
stupid spec sheet so I can't tell you the duration just this minute. It is
supposed to pull just over 6000, so do you think I would benefit from this
intake?

----- Original Message -----
From: <TommFern@aol.com>
To: <dakota-truck@buffnet.net>
Sent: Wednesday, October 27, 1999 4:03 PM
Subject: DML: M1 dyno verified Hp #s on a 360& observations

> I got some good tidbits of info from my buddy in Houston who has a dak.
He
> runs the crate motor shortblock ($1200) with 10.5 to1 compr. with Hughes
> stage 2 heads(265/210 flow #s @.50). Cam=218/224 dur @ .50 with .512/.522
> lift.,1.6RRs, Doug Thor. headers, single 3 " exhaust,no cat,MP comp,stock
t
> body!
> Intake: EXTRUDED HONED stocker= 300 RWHP, 355TQ
> : M1 intake with same mods= 330RWHP, 380TQ * HP remained at
330
> to
> 6600RPM!
> Observations:
> This intake clearly loves compression and cubes. I ran it on my
318
> with adequate results, but when I put it on my built 360 with 10.5to1
comp.
> Wow! It pulls very hard. In fact, I can't put it to the floor until past
> 45mph or I'll smoke em. I also noticed much less drop in TQ with the 360
in
> low rpms. I theorize that the compression and cubes really aides in port
> velocity at low rpms.
> My big problem with the M1 on a dak is the computer. To REALLY take
> advantage of the M1 you need a cam matched to it. The problem is
supposedly
> the computer won't accept the duration the M1 needs,(like a 235-245 dur
> @.50) There's a reason why the low compr, stock magnum headed crate motor
> makes "380 hp". Its the cam.( actually most say it makes 400+ once broken
in
> and tuned)
> The relatively small cams made for daks will start to run out of
> breath just as the intake is really starting to get going! A classic
> mismatch. I know some of you guys are going to say,yea, but look at the
> increases. My answer would be because the stocker is sooo bad and the M1
so
> good. I believe, you haven't seen anything yet until someone puts a
real
> cam behind it. In fact, that's just what I'm going to do over the winter.
I
> want to see for myself how far I can push the computer in terms of cam
> duration. My other buudy,Jason, on the dragtruk page, runs a 230 duration
> without any trouble. I'm going to try in the 235 area.
> Tom(11s dak)
>



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