Description
Set of stage 1 cylinder heads for the 40hp big block Briggs engines. All work and parts listed below. These heads are new and come assembled ready to bolt on. Includes but not pictured the new 40hp heat shields and mounting hardware for those.
-New updated 40hp Briggs castings
-Mild port job on intake and exhaust
-3 angle cut on seats with Robins head and seat machine
-New oversized stainless Manley valves set
-Upgraded valve springs with lightweight retainer
-Surfaced .030 and machined for sealing o-ring (Included)
-Copper cylinder head gaskets (Choice of thickness)
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