Camshaft selection for Mild 440?

[Dusty997]

good data, the jump from small block to big block is so interesting.

 

[RJ Squirrel]

Another bump for the 6401, put one in my 440 Roadrunner and pretty happy with it.

 

[ckessel]

Check out Howards Cams. They have a selection called "Max Certified" in the cam/lifter packages. They run them through an additional cerification process to ensure the QC of the items. This line of units gets a 5 year, no questions asked warranty. I'd been looking at one of their other units for the 440 I'm putting together for my 67 wagon. When I saw and verified that the unit I was wanting, Torque Monster, was in this selection too, I ordered it. Have not run it yet in case anyone asks. Next year sometime. Check them out.

 

[toolmanmike]

Check out Howards Cams. They have a selection called "Max Certified" in the cam/lifter packages. They run them through an additional cerification process to ensure the QC of the items. This line of units gets a 5 year, no questions asked warranty. I'd been looking at one of their other units for the 440 I'm putting together for my 67 wagon. When I saw and verified that the unit I was wanting, Torque Monster, was in this selection too, I ordered it. Have not run it yet in case anyone asks. Next year sometime. Check them out.

They have a few good looking small block street cams I see. Thanks for the tip.

 

[Dusty997]

Another bump for the 6401, put one in my 440 Roadrunner and pretty happy with it.

factory converter? or are you running a higher stall

 

[toolmanmike]

factory converter? or are you running a higher stall

It is pretty duration heavy. 298/303. Fair idle 2-5500 range. 2000 rom converter and gearing recommended.

But, lobe separation is 114°

 

[khryslerkid]

Summit 6400 is a good mild cam.
Summit Racing SUM-6400 Summit Racing™ Classic Camshafts | Summit Racing

I'm using the 6401 which requires a little heavier spring rate. They suggest a 2k stall converter and a low gear but im not and it preforms well. Great cam for the street.
Summit Racing SUM-6401 Summit Racing™ Classic Camshafts | Summit Racing

 

[Dusty997]

Summit 6400 is a good mild cam.
Summit Racing SUM-6400 Summit Racing™ Classic Camshafts | Summit Racing

I'm using the 6401 which requires a little heavier spring rate. They suggest a 2k stall converter and a low gear but im not and it preforms well. Great cam for the street.
Summit Racing SUM-6401 Summit Racing™ Classic Camshafts | Summit Racing

I have 3.73 in my duster right now but i was planning on swapping to something more like 3.23 for the 440 since its just gonna burn the tires off with 3.73 anyway

 

[qkcuda]

I ran a 3.91 with the 6401 cam. It would be happier with a 3.73.

 

[lewtot184]

The 6401 will be happy with 3.23 gear and a stock 11 3/4" converter.

 

[Dave6T4]

I am surprised that cam does not have a little more lift to go along with increased duration. I think the Chrysler Magnum cam had lobe separation down near 110 degrees to help with good vacuum for power brakes.
Chrysler always used a 11 3/4" converter behind the 440, no matter the application. They must have figured the 440 had lots of low end torque without a looser converter. When I put my R/T together, I used the smaller factory 10 3/4" unit, normally used with 383 HP and Hemi, behind my 440. I like it. At the time, around 1990, you could buy this converter from parts jobbers like Car Quest for $100.00. The good old days.
I also put the car together with 3.91 gears. But, with looser converter and big torque, the car was stupid. I quickly changed to 3.23's, and life is good.

 

[Dusty997]

I am surprised that cam does not have a little more lift to go along with increased duration. I think the Chrysler Magnum cam had lobe separation down near 110 degrees to help with good vacuum for power brakes.
Chrysler always used a 11 3/4" converter behind the 440, no matter the application. They must have figured the 440 had lots of low end torque without a looser converter. When I put my R/T together, I used the smaller factory 10 3/4" unit, normally used with 383 HP and Hemi, behind my 440. I like it. At the time, around 1990, you could buy this converter from parts jobbers like Car Quest for $100.00. The good old days.
I also put the car together with 3.91 gears. But, with looser converter and big torque, the car was stupid. I quickly changed to 3.23's, and life is good.

Yeah i think the 3.23s are gonna be the route to go.

 

[fishmens67]

I used a Crane HMV278 in my old 400. That cam had great street manners and power. The summit 6401 is almost an exact copy of that cam 222/234 duration at .050 if I recall correctly.

Can't go wrong with the old Crane " Magic cam", a profile that flat out works. The 6401 specs are very close.

 

[lewtot184]

Mopar magnum cam is 115lsa with 2 degrees of advance ground into it. 6401 cam is 114lsa with 2 degrees advance ground into it. 6401 has 10 degrèes more duration at .050", and .200" lift. The 6401 is a solid step more cam than the magnum. The magnum is not 268/284 duration. It has long closing ramps and when measured ar .006" lift it"s 276/292. Asymetircal lobes.