Valves & Valve Springs
O.E.M. style replacement intake valves 1.750″ head diameter, 45° face, overall length 4.670″. 307 Olds, 1980 to date. Set of 8.
O.E.M. style replacement intake valves 1.875″ head diameter, 45° face, overall length 4.740″. 307-350 Olds. Set of 8.
O.E.M. style replacement intake valves 1.875″ head diameter, 45° face, overall length 4.670″. .070″ shorter than No. 5165. Set of 8.
O.E.M. style replacement intake valves 2.000″ head diameter, 45° face, overall length 4.660″. 307-455 Olds. Set of 8.
O.E.M. style replacement intake valves 2.072″ head diameter, 30° face, overall length 4.685″. 350-455 Olds. Set of 8.
Swirl polished stainless steel 2.072″ O.D., 45° valve seats valves for all cylinder heads, overall length 4.665″. 350-455 Olds. Set of 8.
Swirl polished Posi-Flow stainless intake valves 2.072 head diameter, 45° face, overall length 4.710″. 5/16″ undercut, hard tip & hard-chromed stems. 330-455 Olds V8’s 1964-1980. 6% more flow (being undercut) over our 5275 valves. Set of 8.
2.000″ Hard chrome stainless steel street valves, 45° face, overall length 4.660″. Set of 8.
Swirl polished stainless, hard tip & hard chromed stems. 2.072″ head diameter, 45° face, overall length 4.710″. Olds 350-455 c.i.d. for high performance street, towing and all fuels. Set of 8.
One piece street stainless steel valve 2.072″ head diameter with a 30° face, overall length 4.700″. Direct replacement valve for a stock valve. 11/32″ valve stem. Tip is induction hardened, hard chromed stem and recommended for today’s gasoline.
Stainless Posi-Flow stainless intake valves 2.072″ diameter with 11/32″ stem. 5/16″ undercut and are .100″ longer on the stem so you can achieve enough installed height when using a mechanical roller camshaft with over .650″ lift (overall length 4.850″). When using shallow spring seat heads a 1.900″ installed spring height is impossible without these valves. 6% flow increase over our 5275 valves. Set of 8.
Stainless Posi-Flow intake valves 2.100″ x 11/32″ stem 5/16 undercut with a 45° face. .100″ longer than stock for all out competition use so you can obtain the proper installed spring height when using a roller camshaft (overall length 4.850″). 350-455 V8’s. 6% flow increase (being undercut). Set of 8.
O.E.M. style replacement exhaust valves 1.502″ head diameter, 30° face, overall length 4.740″. 307 Olds, 1977-80 350, all 403. Set of 8
O.E.M. style replacement exhaust valves 1.562″ head diameter, 45° face, overall length 4.735″. 350-455 Olds. Set of 8.
O.E.M. style replacement exhaust valves 1.625″ head diameter, 45° face, overall length 4.690″. 350-455 Olds. Set of 8.
O.E.M. style replacement exhaust valves 1.625″ head diameter, 30° face, overall length 4.680″. Fits some Olds 455 models 1973-76. Set of 8.
