Vortec L31 cylinder head
(→Technical specs) |
(→Technical specs) |
||
| Line 59: | Line 59: | ||
==Technical specs== | ==Technical specs== | ||
| − | * | + | *Valve Spring Seat/Base diameters: 1.290” O.D., 0.852” I.D. |
| − | *Valve | + | *Valve Seals: Metal jacketed Viton positive type seals on both intake and exhaust |
| + | *Valve Guide Diameter: ID- 11/32" (.343"), Guide OD AKA- Seal Provision: .552"-.555" | ||
*Combustion Chamber Volume: 64 cc | *Combustion Chamber Volume: 64 cc | ||
*Heat Risers: No | *Heat Risers: No | ||
| − | *Valve springs: | + | *Valve springs: Single .177" diameter wire, No Damper, 1.250” O.D., 0.896” I.D., 80-pound seat pressure @ 1.700” installed height, Open test load- 190 Lbs @ 1.270", Coil-bind @ 1.180”, vortec heads will not accept early SBC springs w/ damper. Max lift for stock spring is .460" w/ .060" distance before coil bind. |
| + | *Max. Valve Lift: 0.460” which provides 0.030” retainer-to-seal clearance (average overall retainer to seal distance is: .490"-.500") | ||
*Rocker Arm Type: Self-Aligning | *Rocker Arm Type: Self-Aligning | ||
*Intake Runner Volume: 170 cc | *Intake Runner Volume: 170 cc | ||
*Valve Diameter: I: 1.94”, E: 1.50” | *Valve Diameter: I: 1.94”, E: 1.50” | ||
*Casting Numbers: 10239906 and 12558062 | *Casting Numbers: 10239906 and 12558062 | ||
| − | |||
*Rocker Stud: Press-in, 3/8” diameter | *Rocker Stud: Press-in, 3/8” diameter | ||
*Spark plug: 14 mm, 3/4" reach, tapered seat | *Spark plug: 14 mm, 3/4" reach, tapered seat | ||
Your Privacy Choices