Camshaft selection for Mild 440?

[33 IMP]

just confirmed, under .510 lift That hughes one does look pretty good, i wish theyed list the RPM range in their specs.

I'd guess 1000-5000 (or less)
Remember, a 390hp Sixpack 440 made peak power (or at least, was RATED at) 4700 rpm.

 

[qkcuda]

This ones got a bit more lift, im wanting to stay under the threshold of what the springs that come with the 440 stealth heads can handle. and i deff dont want anything that will kill bottom end since most of my driving is done from a stop to around 4000. i think the max is .510 on the stealth head springs.

COMP Cams 21-223-4 COMP Cams Xtreme Energy Camshafts | Summit Racing

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That Comp cam is almost the same specs as the Summit 6401

 

[Dusty997]

yeah something a bit over a stock 6pack is about what im after, 400HP/500 TQ at the crank.

I just keep finding A LOT of conflicting information about what the actual specs of the 6 pack cam were.

 

[Dusty997]

That Comp cam is almost the same specs as the Summit 6401

yeah, the 6401 looks pretty good but i just wasnt feeling that 114 LSA.

 

[33 IMP]

Those stealth heads are so much better than the stock 440 4bbl/6bbl heads, you won't need a bigger cam to make more power.

 

[33 IMP]

yeah, the 6401 looks pretty good but i just wasnt feeling that 114 LSA.

Yeah, I prefer a 106-108 for my engines, but mine aren't intended to be mild street engines.
I have a solid roller on a 104 that I REALLY wanted to use, but it hit the rods I was using, so it's still sitting on the shelf.....waiting.

 

[qkcuda]

I just watched an Engine Masters episode last night on the motorhome 440 they put a turbocharger on. It was a stock low compression 440 and they ran that Comp 268H cam. They ran it naturally aspirated with stock heads and again with Trick Flow 240's. You should see if you can watch it and it would show you the curve that cam generates and also the effect of a better head.

 

[Dusty997]

Yeah, I prefer a 106-108 for my engines, but mine aren't intended to be mild street engines.
I have a solid roller on a 104 that I REALLY wanted to use, but it hit the rods I was using, so it's still sitting on the shelf.....waiting.

i really like the 110 im running in my 360 currently. i think its a great compromise

 

[Dusty997]

I just watched an Engine Masters episode last night on the motorhome 440 they put a turbocharger on. It was a stock low compression 440 and they ran that Comp 268H cam. They ran it naturally aspirated with stock heads and again with Trick Flow 240's. You should see if you can watch it and it would show you the curve that cam generates and also the effect of a better head.

oh awesome im gonna check that out

 

[33 IMP]

oh awesome im gonna check that out

Season 5, episode 13, The Turbo MoHo 4-4-0

 

[RemCharger]

yeah something a bit over a stock 6pack is about what im after, 400HP/500 TQ at the crank.

I just keep finding A LOT of conflicting information about what the actual specs of the 6 pack cam were.

A Chrysler 6pack cam is a Magnum or HP cam.
But there is a MR Sixpack cam as well.

 

[1KoolBee]

+1 on Hughes! Great cams. Call them and ask what they recommend. Good heads will require less cam to meet your HP goals.

 

[Dusty997]

Those are pretty impressive numbers from a low compression crap motorhome 440 with a set of TF's bolted on! I should be well above my minimum power goals with the superior bottom end of the 69 motor.

 

[gtxrt]

just confirmed, under .510 lift That hughes one does look pretty good, i wish theyed list the RPM range in their specs.

high lift is good for any rpms there is no downside if your heads flow and most stock heads are good to 500 lift. on one of my 440 with stock heads and a 217-221 cam it pulls from off idle to 5200 rpms.

 

[gtxrt]

i think the max is .510 on the stealth head springs.

they must be good for more than 510 lift.

 

[gtxrt]

That Comp cam is almost the same specs as the Summit 6401

not even close. comp is on a 110 LSA and 6401 is on a lazy 114 LSA. 6401 has more exhaust duration which also hurts bottom end and more advertised duration hurts bottom end and a 114 LSA hurts bottom end and the slow ramp speed of the 6401 also hurts bottom end.