I am in the process of building a 451 stroker motor for street cruising in my 70 Challenger (I have a keisler 5-speed manual, 3.91 gears, performer RPM, 9.7/1 CR, TTI 1 7/8" headers, ported Iron heads, Speed Demon 750). I have several questions about possible camshafts to use in this application.

1) I am considering the mopar 284 hydraulic lifter cam (PN 4120235) with 241 degrees @ .50" lift, 68 degree overlap and 108 degree centerline (I love the sound of it). Does anyone have information on how much vacuum it should pull with a 440-451" motor (I have power brakes and would consider a vacuum canister or Vacuum pump if needed).

2) I see that mopar performance has a "NEW" mor estreetable  284 grind (PN: 5007697) with 241 degree duration, 56 degree overlap and 114 degree centerline, What would this cam be like for street driving, will it have that much more vacuum?? How will the sound of the motor be affected?

3) Would you recommend another cam all together or diferent engine combo? (I want a similar sound to the 284 cam and am not concerned about acheiving maximum horsepower)

Thanks for your input

484 is a great cam but the new grind with the 114 split will not sound like the other one. Don't worry though, the 108 cam will be fine on the street, I didn't even need a converter with it in my 383 but it still runs 12.90  

Johnny:
That sounds good. I will probably use the 484 cam with 108 separation. By the way do you run power brakes with the 383 motor, If so do they operate fine?
Are you using the stock mopar non-adjustable rocker arms or aftermarket adjustable?
Mike

I am running the 284 cam in a 440 bored 30 over and I get 7 inches of vacuum at idle and 18 at 2500 RPM. Hope this helps.  

My friend runs this cam in his 440 with power brakes, it is a low comp. motor and he has never had a problem, best e.t. 12.66  

I still have a .484x284 w/lifters new in the box if you are interested.  

I have a question regarding a 590/590,312/312 mopar cam I baught the cam not in the original box and am not sure if it is 590-312 it has some # on the back 950695 any help would be appreciated.I mostley just need confirmation that this is wat it is.I know its a solid cam but am not sure if its what they say it is.Thanx  

It's close there's a 659# .528 lift and a 663 .590 lift for the bb, rb.
Is the cam purple between the lobes? Thats the dead give a way.  

I do know its a mechanical purle shaft.I just cant confirm anything, due to the fact that I dont have the box it came in.Those are the only #s' that Ive' got are the ones that are on the end of the cam. Maybee casting# or machineing # which I just dont know? I sure do appreciate any help.Ive been working on this project for about a decade now,this is my passed away friends duster that I baught from his dad.I wanted to start degrein the cam and finish the short bl. this fall.thanks again