The Edelbrock #60909 Performer cylinder head is designed for 302, 327, 350 and 400 cid small-block Chevy engines up to 1986. This cylinder head includes your choice of 64cc (In order to retain stock compression ratio on 1970 and earlier small-blocks) or 70cc combustion chambers and high flow intake and exhaust ports. A Complete head includes larger-than-stock 1.46" valve springs to handle most high-lift cams. This head retains the stock intake port location for compatibility with standard manifolds and headers. Heat crossover is machined for 50-state emissions legal performance.
The Edelbrock #60909 Performer Cylinder Heads are designed for 302-400 cid small-block Chevy engines up to 1986. These cylinder heads include your choice of 64cc or 70cc combustion chambers and high flow intake and exhaust ports.
Specifications
| EGR Port |
Yes |
| Deck Thickness |
0.5625 IN |
| Valve Spring Maximum Lift |
0.575 IN |
| Guide Material |
Manganese Bronze |
| Camshaft Type |
Flat Tappet |
| Push Rod Diameter |
(Suggested) 0.3125 IN |
| Intake Valve Diameter |
2.02 IN |
| Valve Angle |
23 DD |
| Rocker Arm Stud Diameter |
0.375 IN |
| 8788 |
Yes |
| 10024 |
Yes |
| 8789 |
Yes |
| 10025 |
Yes |
| 10252 |
Chromoly Steel |
| 10583 |
No |
| 10261 |
No |
| 10671 |
Yes |
| 30 |
No |
| 10 |
Aluminum |
| 6627 |
185 CCM |
| 6635 |
31-6088 |
| 6634 |
Yes |
| 6636 |
Chromoly Steel |
| 3390 |
Performance |
| 6621 |
9.025 IN |
| 10582 |
No |
| 6626 |
64 CCM |
| 306 |
Yes |
| 9799 |
Yes |
| Valve Lock Material |
Steel |
| Guide Plate Material |
Hardened Steel |
| Exhaust Port Location |
Standard |
| Family |
Performer |
| Rotor Center Bore Inside Diameter |
Straight |
| Seat Angle |
Exhaust 45 deg/Intake 45 DD |
| Series |
Performer |
| Quantity |
Sold Individually |
| Horsepower |
300-450 HJ |
| Seat Material |
Ductile Iron |
| Retainer Included |
Yes |
| Valve Spring Diameter |
1.46 IN |
| 9040 |
D-215-94 |
| Exhaust Runner Volume |
65 CCM |
| Exhaust Valve Diameter |
1.60 IN |
| Construction Type |
Complete |
| Valve Stem Diameter |
0.3438 IN |
| CNC Ported |
No |
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.
