EDELBROCK PRO-PORT™ RAW & SEMI-FINISHED HEADS
DESIGNED ESPECIALLY FOR THE PROFESSIONAL HEAD PORTER |
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| Pontiac
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PERFORMER RPM PONTIAC SEMI-FINISHED
Semi-finished head #60509 includes 14° valve angle, installed guides & seats and no intake pushrod holes.
| Chamber Size (a) | Int. Port Dim. (b) | Exh. Port Dim. (b) | Valve Sizes in/ex, (c) | Part No. (single) |
| 72cc | 1.10" x 2.02" | 1.46" x 1.40" | 2.11"/1.66" | #60509* |
Notes:
(a) Unfinished size
(b) Dimensions at port entry/exit
(c) Maximum size (each valve; may not be used together)
 *Not legal for sale or use on pollution controlled motor vehicles. |
ADDITIONAL SPECS
| | Valve Position | | |
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| | | Intake Pierce Point | Exhaust Pierce Point | | | | | |
| Head | Valve Angle | Xiv | Yiv | Xev | Yev | Spacing | Valve Seats | Guides |
| 60509 | 14° | 0.880 | 0.000 | 1.150 | 0.000 | 2.030 | Installed | Installed |
Use this drawing with the
chart above to determine valve placement |
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AMC
Small Block
