Shady Dell Speed Shop
2440 Commercial Blvd.
State College, PA 16801
(814) 308-8058

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Email us here:
dart69360@hotmail.com

 

  

J HEAD PORTING
(click thumbnails for larger view)
 

“ORIGINAL 1.88” J HEAD AFTER BEING CUT FOR 2.08” INTAKE VALVES PRIOR TO PORTING”
 
“PORTED INTAKE BOWL”

FLOW #’s

LIFT------ASCAST---------PORTED
.100”----62.1/46.6---------62.1/51.8
.200”----112.1/99.4-------135.2/103.5
.300”----156.6/128.3-----198.7/135.2
.400”----193.2/137.3-----239.8/158.7
.450”----200.1/138.3-----253.9/169.7
.500”----200.1/139.7-----258.4/182.9
.550”----200.1/140.8-----264.9/186.3
.600”----200.8/141.5-----254.6/186.3

All #’s at 28” of Water
2.02”/1.60” MP Stainless valves

For more information about factory iron cylinder head porting email RyanJ@shadydellspedshop.com