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Checked for cracks Gasket Match Comp valve job Pocket port Surfaced Cut for 1.625 springs Cut guides for seals @ clearance Install new springs, retainers, & keepers 1.88 intake valves keep the port velocity up in the larger runners, a simple formula for making 550HP+ with these heads. Flow...

915J heads, fresh rebuild, flowed by BJR Racing; Checked for cracks Gasket Match Comp valve job Pocket port Surfaced Cut for 1.625 springs Cut guides for seals @ clearance Install new springs, retainers, & keepers Flow chart attached Also see...

Yes, 1.88/1.60. If you look at the flow sheet it says the valve size, the flow, and a simple formula for making 550HP+ with these heads. On Bobby's link above, he says he likes using 1.88's to keep the port velocity up; "On the 340 engine you should use the 1.88 intake valve to keep the...

Checked for cracks Gasket Match Comp valve job Pocket port Surfaced Cut for 1.625 springs Cut guides for seals @ clearance Install new springs, retainers, & keepers Flow chart attached Also see: http://www.bjrracing.com/small_block_heads.htm $1299 + shipping from 97756 Thanks...