CYL HEAD SB OLDSMOBILE PERF RPM FOR HYD ROLLER CAM COMPLETE

$2,493.90 USD
$2,493.90 USD $2,493.90 USD
CYL HEAD SB OLDSMOBILE PERF RPM FOR HYD ROLLER CAM COMPLETE

CYL HEAD SB OLDSMOBILE PERF RPM FOR HYD ROLLER CAM COMPLETE

$2,493.90 USD
$2,493.90 USD $2,493.90 USD
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.
  • Factory 6-degree valve angle
  • Maximum compatibility with OEM and aftermarket components
  • Mechanical Fuel Pump Clearance Cutout
  • Allows the use of an "OEM" style mechanical fuel pump
  • OEM Port Locations
  • Retains compatibility with OEM and popular aftermarket manifolds and Headers
Vehicle Specific
  • 1965-1976 Small Block Oldsmobile 260 thru 403 CID, can also be used on some low compression Big Block applications

Attributes:

  • Brand Name: Edelbrock
  • GTIN: 00085347610358
  • CNC-Machined Combustion Chamber: No
  • CNC-Machined Exhaust Runner: No
  • CNC-Machined Intake Runner: No
  • Combustion Chamber Volume: 68
  • Cross sell / Upsell Part Numbers: 311105 - Super StreetFighter TH350 6" Tailshaft Non Lock-Up (Buick/Oldsmobile/Pontiac), K42-222-4 - Xtreme Energy 218/224 Hydraulic Flat Cam K-Kit for Oldsmobile 260-455
  • Cylinder Head Style: Assembled
  • Exhaust Port Location: Standard
  • Exhaust Port Shape: Square
  • Exhaust Runner Volume: 130
  • Exhaust Valve Angle: 6
  • Exhaust Valve Diameter: 0.3438
  • Exhaust Valve Job Diameter: 1.680
  • Exhaust Valve Stem Diameter: 1.68
  • Guide Plates Included: Yes
  • Guidplate Pushrod Size: 3/8
  • Intake Port Location: Standard
  • Intake Port Shape: Rectangle
  • Intake Runner Volume: 200
  • Intake Valve Angle: 6
  • Intake Valve Diameter: 0.3438
  • Intake Valve Job Diameter: 2.150
  • Intake Valve Stem Diameter: 2.150
  • Material: Aluminum
  • Related Products: 2156 - Performer Intake Manifold for 1965-79 Pontiac 326-455 Non-EGR 7156 - Performer RPM Pontiac 326-455 Intake Manifold 7373 - Engine Gasket Set (Head / Intake / Exhaust / Valve Cover) for Oldsmobile 4485 - Signature Series Valve Covers for Oldsmobile 350-455 V8 3712 - Performer-Plus Camshaft Kit for Small-Block Oldsmobile 350-403 V8 22764 - Edelbrock Max-Fire Distributor for Oldsmobile 260-455 V8 85582 - Edelbrock E-Series Cylinder Head Bolt Kit 85582 for Oldsmobile big-block 3113KT - Adjustable Double Roller Timing Set for Oldsmobile 400-455
  • Required Products: 7340 - Cylinder Head Gasket Set for Oldsmobile 7238 - Exhaust Manifold Gasket Set for Oldsmobile 7284 - Intake Manifold Gasket for 1965-76 400-425-455 Oldsmobile engines 7598 - Valve Cover Gasket Set for Oldsmobile
  • Retainer Diameter: 1.055
  • Retainer Lock Style: 7d
  • Retainer Material: Steel
  • Rocker Arm Studs/Bolts Included: Yes
  • Steam Holes Drilled: No
  • Valve Cover Mounting Style: Perimeter Bolt
  • Valve Guide Diameter: .545
  • Valve Guide Material: Manganese Bronze
  • Valve Lock Material: Steel
  • Valve Lock Style: 7
  • Valve Locks Included: Yes
  • Valve Spring Maximum Lift: .6
  • Valve Spring Type: Beehive

Extended Information:

  • Country of Origin: US
  • Emissions : Racing or Pre-Emissions Use Only

Packing Information:

  • Quantity of Each: 1
  • Package UOM: EA
  • Dimension: 25.9 x 11.3 x 8.1 inches
  • Weight: 35.7 POUNDS

PDF:

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