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Author Topic: Head porting  (Read 3791 times)

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CDXXVII

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Head porting
« on: May 10, 2012, 07:32:11 PM »
I got an old set of LR 427 heads cleaned up and I realized that the exhaust port floors have been cleaned up a little. Also smoothing is evident around the exhaust guides. Is it customary to rework the exhaust only?
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jayb

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Re: Head porting
« Reply #1 on: May 10, 2012, 07:57:29 PM »
Just cleaning up the exhaust ports used to be a fairly common practice back in the '80s, around here at least.  I don't know if it was a widespread thing or not...
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Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

hotrodfeguy

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Re: Head porting
« Reply #2 on: May 25, 2012, 09:19:37 PM »
I tend to do both and back-cut the valves, the way I was told from Mike Ulrey "can't hurt"
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