C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Com Cam Pro Mag Roller Rockers

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Old Dec 4, 2002 | 09:32 PM
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Default Com Cam Pro Mag Roller Rockers

Looks like I've about talked myself into a set of 1.6 RR's as a Christmas present for the Vette. I've been checking the various parts suppliers and was wondering if anyone has purchased a set of Pro Mag RR's recently and where they found the best price. Looks like Summit has a set for $322 but I would like to see if there is a better price available.

Anyone with any suggestions?

:seeya
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Old Dec 4, 2002 | 09:34 PM
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Has the price gone up? When I bought mine they were $265 I believe. Don't forget some heat treated pushrods and heat treated guideplates.
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Old Dec 4, 2002 | 09:44 PM
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Default Re: (scorp508)

Dunno if there's been a price bump. According to their website the $322 price is for part number 1318-16 (1.6 RR's) - couldn't find this number in their catalog. I did my research on the Comp Cams website and thought I had the right P/N for an LT1 motor.......may be I'm confused??
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Old Dec 4, 2002 | 09:59 PM
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Default Re: (Topload)

The less expensive ones (~$265) are non-aligning...i.e you need guide plates and hardened pushrods. The more costly ones are p/n 1318-16. These are self-aligning...i.e. you don't need guideplates or different pushrods.

Once you add in the cost of guideplates and pushrods, the self-aligning version is actually cheaper.

I'm using the self-aligning ones on my LT4 :)

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Old Dec 4, 2002 | 10:04 PM
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Default Re: Com Cam Pro Mag Roller Rockers (Topload)

I have the non self alinging ProMagnums since I wanted to upgrade to 7/16" studs.

You can get all the parts you'll need directly from Comp Cams; they have good service and quick shipping & delivery.
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Old Dec 4, 2002 | 10:06 PM
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Once you add in the cost of guideplates and pushrods, the self-aligning version is actually cheaper.
Yet heavier and lose more HP to parasitic losses.
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Old Dec 4, 2002 | 10:09 PM
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Default Re: (96GS#007)

Thanks 96GS#007 - now that I understand the difference the slightly higher price makes a little more sense.....was just looking to find the lowest price out there. Don't want the "beater" getting jealous because I bought such high dollar parts for the Vette.

:boxing
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Old Dec 4, 2002 | 10:41 PM
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Default Re: (scorp508)

Yet heavier and lose more HP to parasitic losses.
What is heavier? The rockers are virtually the same. I can weigh both versions on my scale, but I bet they are almost the same +/- 10 grams.
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Old Dec 4, 2002 | 10:43 PM
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....but I bet they are almost the same +/- 10 grams.
Weight is weight when it comes to the valvetrain.
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Old Dec 4, 2002 | 10:49 PM
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Default Re: (Topload)

I bought mine on Ebay, thru Internet Racer's Supply, 1.6 self aligning P/N CCA 1318-16. $265.95 shipped, just checked & they still have them listed at that price. http://www.racenet.net/missing.php?u...e/corvette.php
:)
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Old Dec 4, 2002 | 11:15 PM
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Default Re: Com Cam Pro Mag Roller Rockers (Topload)

running the 1.52's here. Check Herbert(can't remember if Doug or Chet) in National Dragster.
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Old Dec 5, 2002 | 12:38 AM
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Default Re: Com Cam Pro Mag Roller Rockers (89 Paul in Cal)

I got mine from Speed Demon Motorsports when I had the 383 done. I just checked their website and CC-1302-16 or CC-1305-16 are listed at $259.95. If you call Chris he might work you a better deal. I got a package deal on mine so you'll have to talk with Chris for the best price. :yesnod: Link to their site in my sig if you need it.
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Old Dec 5, 2002 | 03:39 AM
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Default Re: (96GS#007)


Once you add in the cost of guideplates and pushrods, the self-aligning version is actually cheaper.

I'm using the self-aligning ones on my LT4 :)

I dont mean to butt in on this post but I have a question that is related to this. I once read that most chevy V-8 engines after 86 already have hardened pushrods. Is it necessary to replace them with the non-aligning rockers and guide plates?
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Old Dec 5, 2002 | 09:02 AM
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Default Re: Com Cam Pro Mag Roller Rockers (R94 LT 1)

I got mine from Speed Demon Motorsports when I had the 383 done. I just checked their website and CC-1302-16 or CC-1305-16 are listed at $259.95. If you call Chris he might work you a better deal. I got a package deal on mine so you'll have to talk with Chris for the best price. :yesnod: Link to their site in my sig if you need it.
:iagree: Chris is a good guy, I think he was able to work out Roller Rockers, pushrods, guide plates, and 7/16" studs for a good price


[Modified by No Ordinary 91, 7:05 AM 12/5/2002]
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Old Dec 5, 2002 | 09:18 AM
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Default Re: (scorp508)

....but I bet they are almost the same +/- 10 grams.

Weight is weight when it comes to the valvetrain.
True, but for a stock engine that will be turning less than 6,200 rpms 99% of the time, the added few grams have no measurable impact. Weight over the valve plays into valve float/bounce at high rpms.

Unless the intent is to beat the engine every weekend at the track and consistently turn >6500rpm, buying 7/16" studs, guideplates, etc is spending money for the sake of spending money.

If someone is really serious about high rpm capability with an LT1, then they should also pull the heads in order to have them machined for better valve springs. I'd also have lighter valves installed.

This and $0.50 will get you a cup of cheap coffee :)


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Old Dec 5, 2002 | 09:29 AM
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Default Re: (scorp508)

Yet heavier and lose more HP to parasitic losses.
:confused: Whether it's the rocker guides on the valve stem or the pushrod against the guideplate I'd expect parasitic losses to be immeasurable between the two, especially on a street engine.

:cheers:
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Old Dec 5, 2002 | 08:42 PM
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Default Re: Com Cam Pro Mag Roller Rockers (Topload)

Thanks for all your replies - once again the Forum doesn't disappoint, what a wealth of information and good pointers on low price sources. I really appreciate all the responses. Now it's off to the phone to place my order(s). I'll let everyone know how the installation proceeds.

:seeya
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