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The Edelbrock #61525 Performer RPM CNC Cylinder Head has the same specifications as our popular Performer RPM cylinder head for 1962-79 389-455 c.i.d. Pontiac engines, but feature a CNC machined combustion chamber. The CNC machined chamber results in a consistent and precise chamber for improved flow performance. Performer RPM CNC cylinder head is available in two chamber sizes. The 87cc chamber version is ideal for 9.5:1 engines and will deliver excellent street performance on low octane fuel. The Edelbrock #61525 Performer RPM CNC cylinder head is patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Cylinder Head.
Edelbrock part #61525 Performer RPM CNC Cylinder Heads have the same specifications as our popular Performer RPM cylinder heads for 1962-79 389-455 c.i.d. Pontiac engines, but feature a CNC machined combustion chamber.
| Exhaust Runner Volume | 175 CCM |
| Family | Performer RPM |
| Construction Type | Complete |
| Rocker Arm Stud Diameter | 0.4375 IN |
| Intake Valve Diameter | 2.11 IN |
| Exhaust Valve Diameter | 1.66 IN |
| EGR Port | Yes |
| Quantity | Sold Individually |
| Horsepower | 450-600 HJ |
| Retainer Included | Yes |
| Valve Spring Diameter | 1.46 IN |
| Valve Spring Maximum Lift | 0.575 IN |
| CNC Ported | Yes |
| Exhaust Port Location | Standard |
| Series | Performer RPM |
| Valve Stem Diameter | 0.3438 IN |
| Push Rod Diameter | (Suggested) 0.3125 IN |
| Deck Thickness | 0.625 IN |
| Valve Angle | 14 DD |
| Seat Angle | Exhaust 45 deg/Intake 45 DD |
| Camshaft Type | Hydraulic Roller |
| Seat Material | Ductile Iron |
| Guide Material | Manganese Bronze |
| 30 | No |
| 8788 | Yes |
| 10024 | Yes |
| 8789 | Yes |
| 10025 | Yes |
| 10252 | Chromoly Steel |
| 10583 | No |
| 10261 | No |
| 10671 | Yes |
| 10 | Aluminum |
| 306 | Yes |
| 6627 | 215 CCM |
| 6635 | 31-6152 |
| 6634 | Yes |
| 6636 | Chromoly Steel |
| 3390 | Performance |
| 6621 | 10.25 IN |
| 10582 | No |
| 6626 | 87 CCM |
| 9799 | Yes |
| Valve Lock Material | Steel |
| Guide Plate Material | Hardened Steel |
California Prop 65 Warning: WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may carry a handling fee depending on your location; pickup in Mississauga has no fee.
We carry 750,000+ parts, so we can probably still get it. Check the spelling, try the part number, or ask us.
Request this part Text us (833) 691-5717