The Edelbrock #61657 Performer RPM CJ Bare NHRA Stock/Super Stock cylinder heads are designed for use with 1968-87 429/460 Fords and SVO 514 engine applications. The Edelbrock #61657 Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. These cylinder heads deliver great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
Specifications:
| Description_ABR |
Cyl. Head |
| Description_ASM |
Ford:Big-Block:429 (7.0L )/460 (7.5L) |
| Description_DEF |
Engine Cylinder Head |
| Description_LAB |
RPM Big-Block Ford 460 Cylinder Head 460 CJ NHRA |
| Description_INV |
Edelbrock BB Ford Cylinder Head |
| Description_MKT |
The Edelbrock #61657 Performer RPM CJ Bare NHRA Stock/Super Stock cylinder heads are designed for use with 1968-87 429/460 Fords and SVO 514 engine applications. The Edelbrock #61657 Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. These cylinder heads deliver great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only. |
| Description_EXT |
Edelbrock part #61657 Performer RPM CJ Bare NHRA Stock/Super Stock cylinder heads are designed for use with 1968-87 429/460 Fords and SVO 514 engine applications. |
| Description_TRA |
Machined profile Cobra Jet-style intake port entries |
| Description_TRA |
Match with Edelbrock head gasket sets. |
| Description_TRA |
Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. |
| Description_TRA |
Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. |
| Description_TRA |
Deck thickness: 5/8" |
| Description_TRA |
Rocker stud diameter: 7/16" |
| Description_TRA |
Pushrod diameter: 3/8" (width of slot in guide plate). |
| CNC Ported |
No |
| Material |
Aluminum |
| Guide Plates Included |
No |
| Grade Type |
Performance |
| Intake Runner Volume |
310.0 |
| Deck Thickness |
0.625 |
| RGL |
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. |
| Combustion Chamber Volume |
75.0 |
| Deck Height |
10.322 |
| Head Casting Number |
31-6067 |
| Push Rod Diameter |
0.375 |
| Length |
9.0000 |
| Width |
11.0000 |
| Height |
26.0000 |
| Weight |
32.0000 |
