Got 6.0 and ls3 heads for free!!!

I dig it.

The only thing I was worried about was if my 918's could swing that lift.

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Originally Posted by Jess

The only thing I was worried about was if my 918's could swing that lift.

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Negative ghost rider. Comp 918s are only good to 600 lift.

Comp website says .625, I'm just not a fan of running internal parts on the edge. What is a good spring for that lift?

Lunati Golds, Patriot Golds, PRC

I run the PRC's...

Avoid 918s. Way too many failures to be able to trust them

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Originally Posted by Jess

After much research, I think a cam like this would fit my requirements.
227/235 .614/.621 on a 113.

PL4yBOY what are your thoughts?

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i realize youre asking justin on this, but figure id let ya know you would want a double spring, whoever you get the cam from should give you this info on what springs are reccomended reason being spring open/close pressures play a roll in keeping the valves from floating, i ran a cam just a tad bigger like 232/238 with less lift and floated the valve on a nitrous run at 7300 rpms ;) using prc dual springs ;) its not so much how much lift the springs can with stand open and close, its more of how much pressure is needed to keep the valve from having harmonic issues and coil bind, this is where valve height come into play along with weight of the valve . id install some ls3 valves in those heads if it hadnt already been mentioned


thats not a bad cam though ;)

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Originally Posted by skeet

i realize youre asking justin on this, but figure id let ya know you would want a double spring, whoever you get the cam from should give you this info on what springs are reccomended reason being spring open/close pressures play a roll in keeping the valves from floating, i ran a cam just a tad bigger like 232/238 with less lift and floated the valve on a nitrous run at 7300 rpms ;) using prc dual springs ;) its not so much how much lift the springs can with stand open and close, its more of how much pressure is needed to keep the valve from having harmonic issues and coil bind, this is where valve height come into play along with weight of the valve . id install some ls3 valves in those heads if it hadnt already been mentioned


thats not a bad cam though ;)

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I definitely think he should keep the RPM under 7000 on this setup. I'd be shifting it at 6800 or so.

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Originally Posted by pl4yboy

I definitely think he should keep the RPM under 7000 on this setup. I'd be shifting it at 6800 or so.

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i tend to agree, i was ran the ragged edge;) but then again my powerband allowed me to :)


he'll be fine with some prs or patriots, i was mainly just throwing out there that for a serious minded person theres alot more goes into a setupp then just throwing some springs on ;) not many take there time in figuring out the perfect spring

I run PRCs. Mine saw 7300-7400 a couple of times on the 1-2 and 2-3 shift a few months ago!

i spun the lunati duals a tad over 7800 rpm in the old tvs tahoe several times...lol