These have been milled .030" to about 69cc. Intake will fit without issues. Had on my TBSS for about 10k miles. Just cleaned up and checked by local machine shop. PP .650" double springs, 2.08/1.60 valves.
$900 obo

 

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what casting are they ? and do you have any flow charts

 

317 heads.

 

317s, off the LQ4/LQ9 engines..

 

those are nice flow numbers. ill pm

 

what brand valves? Is that top intake valve new?

 

I believe they are the Ferrea stainless valves that came with them from Patriot. The top valve was replaced about 2k miles ago due to a bad rocker that damaged the top of the valve. Replacement valve came from Patriot.

 

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Goin up....