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Old 12-09-2008, 08:10 AM
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koscieldrk koscieldrk is offline
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Location: S.E. Michigan
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Default 2009 GCR now Available

2009 GCR is now available online for download.

Dwaine (Speed)
A/Sedan #75 / 76 Retired
Crew Chief #15 Steve Hynes

Mustangs are Like Women,...You Have to Put Up With a Lot of Crap to Get What You Want, But When They Perform, Life Is Good.
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Old 12-12-2008, 02:18 PM
Talladega Talladega is offline
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Join Date: Nov 2004
Location: Pa
Posts: 342
Default Just a Qustion on Rules

1. If the valve size increases from 1.84 &1.50 to new valve rule size of
1.94 & 1.55 and the idea of it is to increase flow in the steel heads,
Why hasn't the CCs of the port Volume spec increased?
And is still the same volume as the old rules for the smaller valve size?

And if you can't match the angles to the new valve size in figure 1 of the spec angle/depth spec sheet what good is the steel head or the larger valve size if the volume specs dont increase also?

To me it looks like we should all have to switch to the new spec alum head
Or buy a T-2 car with the larger tires A/S susp,gutting int,rear gear ratios
and 6 speed,IRS ?

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Old 12-12-2008, 04:36 PM
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Clearly somebody put A LOT of effort into the re-write. Perhaps it's just me, but the GCR now seems less confusing. The previous edition seemed to have a lot of interjected sentences that of themselves made sense, but may have contradicted other parts of the paragraph or other sections. That no longer seems to be the case.

Kudos to the author(s) and those who gave input!!
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