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AFR LS1 Cylinder Heads
7" Deep 16" long 11
1967-1967 GMC K15/K1500 Suburban
3/4-16 in Left Hand Female Thread
This all new design boasts a 105 millimeter bore and a low RPM drive friendly taper
Holley Needle & Seat - "Steel" Needle and Seat (Adjustable w/ .150" Seat) 121023 AFR LS1 Cylinder HeadsSteel tipped inlet needles are necessary when using exotic racing fuels or alcohol or when using benzine or acetone additives. a . 097" seat size should be used for small four barrel carburetors; a . 110" seat size should be used for carburetors up to 735 CFM; larger seat sizes should be used with carburetors 750 CFM and larger. "Adjustable" needle and seat designs allow external float adjustment, without removing the fuel bowl. The "non adjustable"
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