Edelbrock Single Perf 5 0/5 8 SBF 2 02 Head Comp

Intended for installation on 1965-1976 Small-Block Oldsmobile 350-403 c.i. engines equipped with a hydraulic roller camshaft, these 356-T6 aluminum casting cylinder heads (#61035) are a modern refinement to our #6051 heads, except they can accommodate a factory-style mechanical fuel pump. A smaller 68 cc combustion chamber achieves a more appropriate small block compression ratio compared to our PN 61025/61029’s larger 77 cc chamber, which yields a lower compression ratio than most engine builders desire on a small block engine. These heads require a 3.9375” minimum bore and feature a modern chamber design with optimized spark plug positioning. Maximum airflow is achieved through the factory 6-degree valve angle using high-flow 200 cc intake and 130 cc exhaust port volumes, along with 2.072” intake and 1.680” exhaust valve sizes in their O.E. positions. A finished deck thickness with added material above the intake port and pre-counterbored head-bolt holes for .5” diameter studs provide extra clamping force in key areas. A stud-and-guide plate valvetrain system (as opposed to the O.E. pedestal type) provides a solid foundation for the beefier diameter pushrods, and Helicoil inserts in the exhaust and rocker stud holes keep bolts secured. However, there are no provisions for a heat crossover.
Although these heads will fit on Big-Block Oldsmobile engines, the 68-cc combustion chamber size is not ideal for a big-block application as it will raise compression. See PN61025 and PN61029 for big-block specific cylinder heads.
For 350-403 c.i. Olds engines with a hydraulic roller cam, these heads are made of 356-T6 aluminum and feature 68 cc chambers, high-flow 200 cc intake and 130 cc exhaust port volumes, and 2.072” intake and 1.680” exhaust valve sizes.
356-T6 Aluminum Casting, 68cc Combustion Chamber Volume, 200cc Intake Port Volume, 130cc Exhaust Port Volume, 2.072” intake and 1.680” exhaust valve sizes, 3/8” dia. Pushrod diameter, 5/8” Finished Deck Thickness

• Retains compatibility with OEM and popular aftermarket manifolds and Headers
• Maximum compatibility with OEM and aftermarket components
• Allows the use of an “OEM” style mechanical fuel pump
• Mechanical Fuel Pump Clearance Cutout
• Factory 6-degree valve angle
• OEM Port Locations

The Edelbrock 614 Big Block Chevy 24 Deg Pro-Port Cylinder head is designed specifically for the professional cylinder head porter and engine builder. Like all other Edelbrock Cylinder heads, Pro-Port cylinder heads are also cast in the USA at the state-of-the-art Edelbrock Foundry with extra-thick walls to allow for custom CNC porting. In most cases, seats and manganese-bronze valve guides are included, but not installed. Please note: These heads can not be used without professional head preparation. Pro-Port RAW Features Include: – Unported versions of Edelbrock race-winning Victor Series CNC heads for the professional cylinder head porter and engine builder – Pro-Port cylinder heads are cast in the USA at the state-of-the-art Edelbrock Foundry with extra-thick walls to allow for custom CNC porting – The only heads designed specifically to accommodate almost any CNC port shape, size or location – Offers enough wall thickness for CNC machining to various port dimensions – In most cases seats and manganese-bronze valve guides are included – Some Edelbrock Pro-Port Raw Heads Feature Our Special Hot Isostatic Pressing or HIP Process.
Edelbrock #615468 is a Finished E-CNC Version of the #615469 Pro-Port Edelbrock Victor 24 Deg BBC Cylinder Head. Features 0.400″ Raised Intake Port & 17 Deg Intake Valve Angle. Raw/Bare Castings, HIP Treated.

• Polished Then Hard Anodized For Use w/Racing Fuel