Comp cams identiying soild roller

[567trishop]

Hi, i brought a comp com a few years ago and have lost the spec sheet,
the cam is for my 348, sroked to 434 supercharged the number on the cam are,
1419s / 4424s
c48-14
cc r11dr
q7042
-09
any help would be great, thanks anthony

 

[62impala409]

That is a custom grind. You will need to contact CompCams for the info. Very easy to do.

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[567trishop]

Thanks, I had email them last week, but I will ring today

 

[CDNpontiac409guy]

With 1.75 rocker arm
Intake:
.607" lift , 275 adv dur , 247 dur @ .050"

Exhaust:
.607" lift , 291 adv dur , 263 dur @ .050"

If it was intended for a blower application, I would expect a wider lobe seperation... 112-114.

You'll need some good headers to work properly with this one.

 

[567trishop]

Grind # 409CH 1419S /4424S R 110.0
DURATION @ .050 INTAKE 247 ROCKER ARM RATIO
VALVE ADJ INTAKE .014 DURATION @ .050 EXHAUST 263 INTAKE 1.75
VALVE ADJ EXHAUST .016 LOBE LIFT INTAKE .3480 EXHAUST 1.75
VALVE LIFT INTAKE .609 LOBE LIFT EXHAUST .3480
VALVE LIFT EXHAUST .609 LOBE SEPARATION 110.0
DURATION .020 INTAKE C/L 110.0
TAPPET LIFT INTAKE 275 CAM ADVANCE 0
TAPPET LIFT EXHAUST 291 HYDRAULIC
VALVE TIMING .050 OVERHEAD CAM N
VALVE OPEN INTAKE 13 JOURNAL DIAMETER STD 1.868
VALVE OPEN EXHAUST 61 RECOMMENDED VALVE SPRINGS
VALVE CLOSED INTAKE 53 DEPARTMENT R
VALVE CLOSED EXHAUST 21
Not sure why I got 110, it was making 580hp on a chassis dyno at 4500rpm,
What valve spring would U reckon to use, as I broke an inner spring, I'm using eddy heads

 

[567trishop]

Yes I have good headers as the engine is in a 55 chev, with gasser style headers, thanks

 

[Skip FIx]

Man with the good exhaust flow on Eddy heads I would not expect you need that much difference on exhaust duration unless it is on a blower with a lot of boost or N2O motor with a 250 shot. Mine were almost 80+% of the intake flow. Most boosted guuys I know do widen the LS to keep from blowiong intake charge out during overlap.

What was your valve spring IH? About 1.900? I used some Howards springs on mine but it is only a 251/251 @ 0.050 and so far only about 20 dyno pulls.

 

[Ronnie Russell]

Were you using the springs furnished with the Edelbrock heads ? They will not handle that type of cam. If the 580 hp on a chassis dyno is correct, I certainly would not change the cam. A lot of people would like to have those numbers. Use quality springs and make sure spring set-up is good.

 

[Skip FIx]

I agree with Ronnie if those dyno numbers are correct don;t touch it other than swap springs!

 

[CDNpontiac409guy]

Spring pressures ?
HHMMM.. I'm thinking that you probably need around 180-190 seat, 475 open. Remember, manifold pressure under full throttle, will actually push on the back side of the intake valves, making it necessary to have 20-30 pounds more seat pressure than you would normally.
That's the easy part.
Make sure there's enough room with the stubby installed height, for the valve at full lift.

580 HP on a chassis dyno ?.... nope, you're not gonna be late