need some numbers (918s)

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Mar 19, 2007 | 09:31 AM

maybe2fast

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From: Walled Lake, Michigan

need some numbers (918s)

I have a hotcam want to do the 918 beehives. I need the numbers and good place to get them for the springs (918) and locks and retainers and anything else I need to install them on LT1 aluminum heads. thanks

Mar 19, 2007 | 11:24 AM

BlackScreaminMachine

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From: Wallingford CT

http://www.compperformancegroupstore...Category_Code=

HIGH PERFORMANCE GM LS1 VALVE SPRINGS
PART #26918-16
$238.88

http://www.compperformancegroupstore...Category_Code=

STEEL RETAINER FOR 26915 & 26918 SPRINGS
PART #774-16

OR

http://www.compperformancegroupstore...Category_Code=

TI RETAINER FOR 26915 & 26918 SPRINGS
PART #772-16
$312.48

As for the bottoms I am not sure, pm SStrokerAce

Mar 19, 2007 | 11:25 AM

BlackScreaminMachine

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From: Wallingford CT

FYI, you need NSA rockers, if you have the GMPP SA 1.6 rockers, they will hit the retainer. Look at Comp Cam Pro mag, 7/16" NSA rockers with a good guide plate, if you heads are not milled and not running a Morel lifter, 7.200" hardended pushrod.

Mar 19, 2007 | 11:47 AM

maybe2fast

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wow, so SA rockers will not work with the 918... well I may just go with the LT4 springs.

Mar 19, 2007 | 01:05 PM

rasputin

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Quote:

Originally Posted by maybe2fast

wow, so SA rockers will not work with the 918... well I may just go with the LT4 springs.

is this true?

Mar 19, 2007 | 01:13 PM

1997bird

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From: Aztec, NM

It depends on what brand of SA rocker arm that you have as to whether or not they will or will not hit the retainer.

Mar 19, 2007 | 01:46 PM

BlackScreaminMachine

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From: Wallingford CT

I have used them on my LT1, there was a issue, 1st hand exp, Bret converted my heads over personally, I had GMPP 1.6 rockers, swapped to Comp Cam Promags.

Nuff said.

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Mar 19, 2007 | 04:46 PM

BlackScreaminMachine

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From: Wallingford CT

Well thats well and good. So all post ill refer to you saying Comp Cam SA's work fine as long as you got the proper installed height of 1.800"
Running beehives meaning that he is running a decent cam, or some radical lobes, meaning having a NSA rocker is better for valvetrain stiffness and reliability in the upper rpms, so if he buys any rocker its prob going to be a comp cam, just NSA and be done with it.

If he is still running stamped rockers on the hotcam, then at least he doesnt have to rebuy stuff.

Mar 20, 2007 | 10:42 AM

#10

Imnotfast

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From: In a box next to walmart

I run 918's with SA Promag's at the .600 lift and a installed HT of 1.900
Not a problem yet with any valvetrain.

Mar 20, 2007 | 11:11 AM

#11

BlackScreaminMachine

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From: Wallingford CT

1.900" installed height!? A lil high there, any reason why, did you use shims?

Mar 20, 2007 | 03:46 PM

#12

maybe2fast

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From: Walled Lake, Michigan

I am putting in the hotcam and have some 1.6rrs from a hotcam kit but am looking for valvesprings and I thought 918 would be good for it. just need to find out if they will adapt well.

Mar 20, 2007 | 04:37 PM

#13

Imnotfast

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From: In a box next to walmart

At 1.900 it has enough pressure seat pressure and open it can control the valve action and reduce friciton. In other words it make a little more power.