Do I need HD valve springs?

[rfkellner@snet.net (Rick Kellner)]

Nate,
    You have an 84, therefore it is a solid lifter JH motor.  You said you
put in an Autotech 268.  The 268 is a hydro head cam.  I believe you have
the 286?  That is the solid lifter cam.  If that is the cam you have, the
answer is yes, Autotech's lititure says they are required.  The reason they
are required is that the 286 cam has a lift of .436.  Stock springs are
close to their 'coil bind' with a cam that has a lift of .425.  High
performance springs have less coils and therefore can be compressed more
than stock springs.  The biggest cam you should use with a stock solid
lifter set up is the G-cam.  Rick Kellner.

----- Original Message -----
From: "Larry" <rocco16v@netzero.com>
To: "Nate Mellom" <bronson@inwave.com>; <scirocco-l@scirocco.org>
Sent: Tuesday, May 21, 2002 8:46 PM
Subject: Re: Do I need HD valve springs?


> > When I did the motor swap in my '84, I installed my Autotech 268 cam.  I
> > checked the valve clearences, and everything checked out fine.  I
> > installed my Neuspeed cam gear, and I have my timing advanced about 5
> > degrees.  But I get some wierd noise while accelerating, almost like a
> > chain being drug across the ground.  I've heard that a hot cam need
> > heavy duty valve springs, but I still have my stock springs.  Am I doing
> > anything bad to my motor, and should I upgrade to better springs?
> >
> > Another question, I upgraded to the G60 rubber valve cover gasket, and I
> > installed the replacement studs.  Somehow the stud closest to the cam
> > gear, on the back of the head, stripped in the head (actually I think
> > the head threads stripped), and I'm getting a slow oil leak down the
> > back of my motor.  Any easy fix?
> >
> > Thanks,
> > Nate
> > '81
> > '84
> >
> >
> >
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