comp EX275HL hows it run?

[Moparal]

Anybody try one? I am wanting to.   I got 10.2 compression, 3500 stall 391 gears, 214/181 906 heads. 2 inch headers. Any one else try it?

[Oldschool]

What are the specs of this cam?        Might know more about it's characteristics if we knew that....       

[Chryco Psycho]

I won`t use Comp cams in a Mopar

[tactransman]

How come C.P. ? Educate me.

[Chryco Psycho]

most their grinds are designed for small block chevs , don1t belive me ? virtaully any Mopar grind is listed with exactly the same part # in the small block chev listings , this means that tthey are not taking advantage of the larger .904" diameter lifter that Mopar uses & in every case where I have replaced a Comp Cam with an Engle /UltraDyne / or lunati I have seen proven gains of 20+ hp , I replaced a Comp Cam in a 440 this spring & the rwhp went from 274 to 345

[tactransman]

So a custom grind is OK?
Do you like all the Mopar  "purple shafts"?

[Chryco Psycho]

the Purple shafts still work very well considering they were designed int he 70s
I like soem of the newer grinds better thoguh

[Oldschool]

So a custom grind is OK?

 I am running a Comp Custom grind roller set up in the Beast.   Runs great, sounds great, and so far has held the correct valve lash quite well.  I have tried to look it up on the Comp Cams website and there is not any part or grind number anywhere close.  Must be a top secret stealth cam...           

[Super Blue 72]

most their grinds are designed for small block chevs , don1t belive me ? virtaully any Mopar grind is listed with exactly the same part # in the small block chev listings , this means that tthey are not taking advantage of the larger .904" diameter lifter that Mopar uses & in every case where I have replaced a Comp Cam with an Engle /UltraDyne / or lunati I have seen proven gains of 20+ hp , I replaced a Comp Cam in a 440 this spring & the rwhp went from 274 to 345

That explains a lot to me!

I had one in the 80's and the box said "chev" on it! 

[Moparal]

Sorry guys, I was called out on an emergency job when I posted. I had to fly out to Pittsburg then drive into Wheeling WV and go south for about 40 miles, so I'm stuck here for 1 more day.  Back to my post tho...

The 275 is a mopar grind and I have only ran comp cams. The dart runs 10.20's  and my 72 cuda will run a 7.96    It makes 1028 hp and this is on comp cams. I often have them grind my own designs. One of the mags did a test on a 440 with the 275 and it made like 538 horse from what I was being told. I have no proof. So I know nothing myself about this 275 cam as it stands. But it's just a street car as it is. If I was drag racing in this car, I would be running my handicap dial in so the hp gain or loss isnt a factor since you race yorself anyways. I just was wondering if anyone had tried this cam themselves....ALAN

[Jacksboys]

the Purple shafts still work very well considering they were designed int he 70s
I like soem of the newer grinds better thoguh

What would you suggest for a 8.5 to 9:1 360, stock iron heads with 2.02/1.60 valves, Performer intake, 600cfm edelbrock, 4-speed overdrive unit, 3.23 gears, in a 3400lb car?  (Non-Mopar Performance)
My father is going to refresh his motor in his 74 Dart in a couple of months.

[MJS73]

 

Mike

[Moparal]

I bought the cam from comp yesterday, and it showed up today. I am commited now so when the engine is complete, I will know then. I figure it will work good with my 6pk set up. Not looking for a large amount of HP. The car won't be raced. Just some average cruising.

[72hemi]

All of my friends that have run Comp Cams have ended up repleacing them with another brand becuase the kept breaking valvetrain components from cams all the way through.

[firefighter3931]

Anybody try one? I am wanting to.   I got 10.2 compression, 3500 stall 391 gears, 214/181 906 heads. 2 inch headers. Any one else try it?

The xehl series are nice cams....904 mopar lifter designs and fast rate of lift. A buddy has that stick in his 408 smallblock stroker with e-heads and it runs great. Idles well, lots of manifold vacuum for power brakes and easy tuning. I think you'll really like it. 


Ron