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Combustion chamber volume 58cc
Intake runner volume 225cc
Exhaust runner volume 62cc
Intake valve diameter 2.15"
Exhaust valve diameter 1.60"
Valve stem diameter 11/32"
Valve guides Manganese bronze
Deck thickness 5/8"
Valve spring diameter 1.55"
Valve spring maximum lift .650"
Rocker stud N/A
Guideplate
N/A
Pushrod diameter 5/16"
Valve angle 16°
Exhaust port location Raised
Spark plug fitment 14mm x 3/4 reach, gasket seat
Made In USA
This is the head to run in ultra if it flows anywhere close to what they say.
planning on a big block at this time UNLESS I happen to find a GOOD block.
With the 16* valve angle you fall into the plus or minus 2* rule from stock. So you can run these at a stock valve angle weight. So a r3 at 440 cu inch with these heads could be 3050 lbs.
Brett Miller W9 cnc'd heads
STR Chassis fabraction
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