Wilson Manifolds Carburetor Spacer - 4500 1" Open L/W H Beam Connecting Rod They include internal gussets for

They include internal gussets for additional strength

HOLLEY CARBURETORS - 4 bbl

TASS Series

265 in Long

Hard Core Gray with black anodized billet aluminum metering block and booster inserts

Wilson Manifolds Carburetor Spacer - 4500 1" Open L/W H Beam Connecting Rod They include internal gussets forNitrous Pro Flow open spacers have become the standard in NASCAR NEXTEL Cup racing, but are for use in any application where a top quality light weight billet spacer is desired. Open spacers increase plenum volume and move the throttle blades away from the roof of the runners, allowing the air fuel mixture to turn more easily into the runners for improved distribution and mixture quality. Open spacers will add mid range and top end hp. Nitrous Pro