Came in the mail today from KRC via Comp Cams. All measurements are intake/exhaust installed at 106 intake center line:

Gross Valve Lift: .488/.488 with 1.7 rockers that's .518/.518
Duration at .006 Lift: 262/262
Duration at .050 Lift: 210/210
Lobe lift: .3050/.3050 <----------curious as to how this compares to stock lobe lift.
LSA: 110.0

Valve timing ......Open ............Close
at .050" Int: ..........1- BTDC .......31. ABDC
...........Exh: ......... 39 BBDC ........9- ATDC

cam lobe profile# 3300/3300

The specs appear to be similar to the 210X cam, but with a bit more lift, less exhaust duration (should help the 318 keep the low end a bit).

now if it would just warm up a bit, I can put this stuff in the truck.

 

ah lucky SOB , have fun

 

squirrels, have you got an SCT tuner already ?
and fuel sync setting scanner gizmo ?

 

Got an SCT and a Snap On MT2500.

I wouldn't have dared a LSA under 112 without a Tuning solution of some sort.

 

^good.

i'm getting over my head here, but will this work with stock injectors, or do you need bigger injectors ?

does the 1.7's amplify both the lift and duration ? you're not too big there are you.

will this produce the big idle lope. cause that's what we all want....

 

cool to see you got it i been seeing you talk about over on a diff forum

that cool the grind it down for you so you can keep your rockers

do you know what lifters your going with??

i got i put new lifter in and its kill me cant im not putting in a cam

 

Sounds like a decent cam, should be fun
Think the stock lobe lift is around .260/.270 give or take .416/.432vl IIRC

Had our first snowstorm up here, wasnt too bad but there are lots more too come.

 

Injectors should be good to 450hp, but I will verify with hemifever to see if I need to go bigger.

The rockers only multiply lift, they do not effect duration, only the cam can really do that. I asked Marty to keep me far away from Piston to Valve kissing, and having to have the valve guides clearanced. I think he gave me about as much lift as he could within those specs with a small safety margin. The guides need to be clearanced right around .525 and the max lift for a flat topped 318 piston is right around .540. Lift is always a nice number to maximize provided your heads can support the flow, as there really isn't a trade off to putting more mix in the cylinder. It's totally independent of most of the other variables that are trade offs, but there's a hard and firm consequence for not staying within the parameters.

The LSA will probably make the idle pretty darn choppy, but it won't be funny-car-brink-of-stalling-out choppy.

 

what lifters you going with?

 

Mopar performance lifters, MP valve springs good to .600 lift with hardened retainers and locks, felpro 1008 head gaskets, JP Performance timing set (wanted HD and adjustable by 2* from -8 to +8 for cam degreeing), got a new harmonic balancer as mine's looking crappy.

I was thinking about buying the Hughes racing valves and getting a 3 angle on the heads, not sure if I can afford that right now though. I'll clean up and casting flaws in the heads and do a bowl blend with a die grinder when I pull them.

I bought some MP porting templates for the Magnum heads, but I don't know how brave I am at porting after practicing on this dud head I have.