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dogdays
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Reged: Jan 20 2003
Re: Hughes Whiplash cam + Comp Cams springs/lifters?
      Fri Feb 24 2012 03:53 PM

There are three different things going on here.
First, the Comp Thumpr cams came out at least 6 months before Hughes' Whiplash. I believe that the Whiplash was a response to the Thumpr and in typical Hughes fashion they did it just a little better. As you yourself noted the Hughes "real Chrysler" cam has more lift per degree of duration. It sounds like the Comp is one more Chevy lobe on a whatever core.
Also, the quicker rate of lift for larger diameter lifters is not a Hughes secret, it's an early Machine Design principle. So to say that the Comp is in any way a ripoff of Hughes is laughable. It just took Comp a little longer to see the market for the lobe, they probably let Hughes do their market research for them. Again, this is common in the competitive world of industry.
Okay, now on to second point, you may have old springs where the part number stayed the same but the spring itself was changed slightly (upgraded) over the years. So I'd believe what's on the box they came in. And yes, springs are blessedly linear and your math looks right.
Third, I am about as cheap as they come and the more I think about this the more I think you will be all right without spending the extra $$$$. Keep in mind to break the cam in to Hughes specs, including removing the inner springs. Then be careful in the upper rpm ranges where the springs might possibly allow valve float or bounce earlier than a stiffer spring.
As for the lifters, they all come from just a couple of places, as long as the oil doesn't come squirting out around the lifter it should be OK.

Keep us posted on your results...
R.

Edited by dogdays (Fri Feb 24 2012 04:11 PM)

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Entire topic
Subject Posted by Posted on
* Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader Mon Feb 20 2012 05:10 AM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? BIGSTROKER   Mon Feb 20 2012 07:46 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader   Mon Feb 20 2012 08:05 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Junky   Tue Feb 21 2012 12:42 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader   Wed Feb 22 2012 04:56 AM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Junky   Wed Feb 22 2012 12:01 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? dogdays   Wed Feb 22 2012 12:55 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader   Thu Feb 23 2012 04:15 AM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader   Thu Feb 23 2012 06:03 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader   Fri Feb 24 2012 05:29 AM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? dogdays   Fri Feb 24 2012 03:53 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader   Fri Feb 24 2012 06:47 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? maximum entropy   Fri Feb 24 2012 04:25 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader   Fri Feb 24 2012 06:50 PM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? dogdays   Mon Feb 20 2012 10:28 AM
. * * Re: Hughes Whiplash cam + Comp Cams springs/lifters? Pale_Roader   Mon Feb 20 2012 06:44 PM

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