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

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Old Dec 10, 2006 | 01:47 PM
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Default Scorpion RR

Are these available as self aligning ?


Pelle

-90 ZF6 vert
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Old Dec 10, 2006 | 03:02 PM
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Yes.
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Old Dec 10, 2006 | 04:06 PM
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On an 89 I used CAT 1.6 narrow, self aligning roller rockers. Required no mods to the valve covers. No problems so far.
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Old Dec 11, 2006 | 12:19 AM
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Yes they manafacture a few different self aligning versions. These PN's would be what you need for your Corvette depending on which ratio you wanted.

PN 1035 3/8 stud narrow body 1.5 ratio
PN 1036 3/8 stud narrow body 1.6 ratio

They make a very nice prouduct.

Will
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Old Dec 11, 2006 | 04:29 PM
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I think i will go with p/n 1036.
Since i am looking into more mods later on, i am also looking at the
comp cams beehive springs.
Do i have to adjust the valve spring on 113 heads by shimming ?

Pelle

-90 vert ZF6
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Old Dec 11, 2006 | 04:48 PM
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You may need to grind the drip tabs on your valve covers and use thicker gaskets.
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Old Dec 11, 2006 | 05:25 PM
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Do i have to adjust the valve spring on 113 heads by shimming ?
Whenever you install valve springs you may need to ge the desired installed height and so seat force.
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Old Dec 11, 2006 | 06:27 PM
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Originally Posted by rklessdriver
Yes they manafacture a few different self aligning versions. These PN's would be what you need for your Corvette depending on which ratio you wanted.

PN 1035 3/8 stud narrow body 1.5 ratio
PN 1036 3/8 stud narrow body 1.6 ratio

They make a very nice prouduct.

Will
I keep both in stock as a matter of fact... Another feature of the Scorpions over Cranes is the rocker body is shaped to eliminate valvespring retainer interference (just behind the roller tip). I've sold a bunch with ZERO problems..
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Old Dec 12, 2006 | 08:30 PM
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Originally Posted by Pelleplutt
Are these available as self aligning ?


Pelle

-90 ZF6 vert

If you're going to get these, dont screw around with the wimpy 1.5:1 or 1.6:1 rockers, go with the 1.7:1 models while you're at it.

I believe nathon plemons has a webpage developed for the swap. More lift is always better.

ROCK ON!
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