. 12496822 Intake Manifold, Eliminator Vortec Design Designed to deliver the most ... power and torque with Vortec cylinder head P/N 12529093, 12558060, ... /N 12361057. 12497978 Polished Aluminum Valve Covers, Center Bolt Design ... 1/4" taller than production covers. Kit includes bolts, washers and seals. ... NOTE: Use valve cover gasket P/N 10046089 and replacement ... kit P/N 12497980. 12355350 Chrome Valve Covers, Center Bolt Design Short-style ... chrome valve covers with baffle for use on 1986-and-newer ... , Red GM Performance 135 Boot 12361056 Valve Cover 12497879 Valve Cover 12407885 ... 12563127 Fan 19.5 (V-belt) 15644302 Fan Studs 4 req (serpentine belt) 12338107 Fan ... Studs 4 req (V-belt) 382919 Fan Stud Nuts (4 req) 12338130 Fan bolts (4 req ...
Small and Large Port Vortec Bowtie Heads (intake). Bare head shown ... . Small Port Vortec Bowtie Head (exhaust). Bare head shown ... . Large Port Vortec Bowtie Head (exhaust). Bare head shown ... . 146 Small and Large Port Vortec Bowtie Heads (combustion chamber) ... VORTEC BOWTIE HEADS These are GM Performance ... production head, they come with bigger valves, a thicker deck surface, and a 66 cc ... for short-track racing applications. Vortec Head Technical Notes: Cast iron small ... heat risers Machined for 2.00"/1.55" valves Hardened exhaust valve seats 0.530" ... max valve lift (without modifications) Drilled ... and tapped for screw-in studs (7/16-14) Dual bolt patterns for ... perimeter bolt and center bolt valve covers Dual bolt patterns for both Vortec and ... (use early model P/N 10051103 or Vortec design P/N 12366573,P/N 12496820, P/N ...