Small Block CHEV 350  (Complete)

Description

These heads are designed for entry-level street performance engines and ideal for operating in the idle to 6500 rpm range. Made from A356 aluminium castings, these complete heads include larger-than-stock 1.43" (36.3mm) dual valve springs to handle up to 0.575" (14.61mm) maximum valve lift. They produce  over  280cfm. The combination of a 5-angle competition valve job, diamond-honed bronze guides, hand bowl blending, and professional assembly means these heads outperform some of the best brands in the business. Recommended spark plugs are 14mm x 3/4" reach with flat gasket seat.

---

Specifications

Combustion Chamber Volume:    64cc Chamber 
Exhaust Runner Volume:  70cc
Intake Runner Volume:   200cc 
Valve Spring Diameter: 1.430" (36.3mm) Dual springs
Valve Material: Stainless Steel
Valve Guide Material: Manganese Bronze
Valve Stem Seal Material: Viton
Maximum Valve Spring Lift:  .575"
Spring Installed Height: 1.85"
Spring Pressure: 100lbs@ 1.85" / 300lbs@ 0.575"
Outer Diameter of Outer Spring: 1.430" dual with internal spring

Guide Plate Pushrod Size: 5/16" (must use hardened Pushrods)
Spark Plug Style: Straight
Rocker Stud Thread Size: 7/16" 
Lock Style: 7 Degree
Maximum Valve Lift: 0.575" (14.61mm)
Intake Port Volume: 200cc
Intake Valve Diameter: 2.02"
Exhaust Port Volume: 70cc 
Exhaust Valve Diameter: 1.60"
Recommended Intake Gaskets: FELPRO 1206
Recommended Exhaust Gaskets: FELPRO 1406