Vader

I just received word from Jay Adams at Comp Cams that the 1318 rockers are now available for shipment, and the 1317s are only days away.

For those who haven't been keeping up, the 1318s are the forged chrome-moly steel 1.6:1 fully rollerized self-aligning rockers for SBCs. The 1317s are the same in a 1.52:1 ratio. These are functionally the same as the Comp Pro Magnum rockers but are self aligning. They are dynamically 5% lighter than the Crane Gold Race aluminum rockers, smaller in size so they allow more space for center-bolt covers, have larger bearings for added strength, and are far superior in strength and rigidity for accurate ratios and durability. For those who have done the homework, Chevorlet engineers had used a version of the Crane aluminum rockers in the LT4 engines, but only after Crane redesigned them for added strength in critical areas to Chevrolet specs. It seems the engineers at Bow Tie Central realized a weakness in the Crane rockers and set out to reduce the potential failures in the stock LT4s. Now, we don't have to risk it at all, and for the same price or less.

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Later,
Vader
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"Make Me Bad"
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Grim Reaper

Your commission check is in the mail.


j/k

Black Beauty

hey vader,
i work at CSK auto. checker, schucks, kragen
we have a certain number of catalogs we can special order from. crane cams is one of them. comp cams however is not. therefore i can get a phat discount on crane but not comp. what would you recommend then as far as 1.6 rockers? gold? self aligning? part number? something to work on the 400 that i will be building this winter.i plan on 450 + hp. what about a cam too??(the 400 will have 350 rods (5.7), hooker super comp 1 3/4, random tech hi flo cat, flowmaster single in/dual out, performer rpm intake, k&n xstream open element, holley or demon 850cfm carb, heads...not sure which yet(can u recommend any?) which brings me to rockers and cam. please help. thanks so much. (also...i might be going with a stroked 350 as opposed to the 400...still cant make up my mind.) either way ill need a new flexplate right??) with a 400 i need a diff. starter right??
thanks again.

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Rick
90 Camaro RS 305 TBI
400 on the way!!

Vader

Glenn,

I know it sounds like a commercial for Comp, but I've been getting a stiffie waiting for these rockers since last March, when the project was first announced. The Pro Mags are a really solid design, and I always wondered why they weren't available in self-aligning.

Incidentally, my standard fee is 10% of gross..

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Later,
Vader
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"Make Me Bad"
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8Mike9

And the suggested price is?????

Brett

Vader - so the only difference with these new ones as opposed to the current Comp Pro Magnum 1.6s is that they are self-aligning?

The one place that I admit I am sorely lacking in understanding as far as engines go is the valvetrain and cam specs - beyond a basic understanding of course. What would be the advantage of using self-aligning rockers vs. using the regular Pro Mags in conjunction with guideplates? Where would you notice a difference? What would be best for an engine that will spin higher than 6000 on occasion and also see 12psi of boost in the future?

I just sent my heads down to GTP for a Stage 2 LT1 treatment and ordered a lot of my equipment through Craig. He has some really good prices down there for certain parts. I basically went ahead and ordered the whole valvetrain through him and saved approx. 300 compared to Summit or my engine shop. Not bad - plus all the parts will arrive at once instead of having to try to plan my weekend around whether or not the UPS guy shows up or not with the lifters or something!

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1991 RS LT1
every imaginable bolt-on, ungodly LT1 355, and 12 pounds of intercooled boost on it's way in '01

2000 C5 Coupe
black/black 6-spd, optional polished rims, first run 13.056 @ 109.52 stock

"So what DOES the back of a Mustang look like?"

md

Vader, I'm curious as well what your thoughts are on these rockers.

I use the Pro Mags every chance I get and personally think they're the best rocker out there with the exception of a shaft mount system. Self aligning rockers have always made me a bit nervous though. I like the thought of the rocker tip being held in position, but I don't like the thought of excess movement at the other end of the rocker. I'm just thinking aloud here, not really opinionated either way.

What do you think? Preferences?

Mike

Chevy86 IROC-Z

iTrader: (17)

Back from the Dead. Im about to buy these CC 1318's. Mike, are you still waiting for Vader to answer your question?

Apeiron

You do realize that he asked OVER ELEVEN YEARS AGO?

Chevy86 IROC-Z

iTrader: (17)

Yup. Thats y I put "Back from the Dead". Seems like Mike is still waiting for an answer. 11 years!!!! Damn. 11 years ago I was 18 years old, fresh out of high school. Well since its now at the top of the message boards, hopefully other members can touch up on the most compatible full RR for our stock center-bolt valve covers.

Chevy86 IROC-Z

iTrader: (17)

Notice the tabs on the underside off the roller tip. These help keep the tip inline with the contacting section of the valve stem. I heard that Harland Sharp makes an aluminum RR that is self aligned as well. But they're design is different than these CC Magnums. The Harland Sharp design has a groove machined in the roller tip. An example of the groove that is machined in the roller tip is in the picture below.....