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Pontiac V-6 and V-8 Engines - What's in the Crate?
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| HEADS |
| Casting Number: |
Edelbrock |
| Chamber Open/Closed: |
Open |
| Head Mods: |
Edelbrock, CNC-ported |
| Combustion Chamber Volume: |
80 to 90cc |
| Maximum Flow at 28 Inches of Water: |
340-370 / 250-275 |
| Compression Ratio: |
Edelbrock, 10.5:1 to 11:1 |
| Valves: |
Optional Ferrea or similar, 2.11-in to 2.19-in stainless Pro Flow intake, 1.77-in exhaust |
| Angles Used in Valve Job: |
45 to 50-deg |
| Mods: |
Special approach angle with back-cut |
| Retainers: |
Titanium |
| Keepers: |
Titanium |
| Valve Guides: |
Bronze |
| Valve Seals: |
Teflon |
| Rocker Shafts or Studs: |
Stud rockers standard, shaft optional |
| Rocker Arms: |
Harland Sharp, or optional Jesel or T&D rocker shafts, 1.65:1 to 1.8:1 |
| Pushrods: |
Smith Brothers |
| Diameter: |
Thickwall, 3/8 x 9.400-in |
| CAM |
| Brand: |
Comp or optional LSM Engineering hydraulic-roller or solid-roller |
| Duration at 0.050: |
250 to 282-deg intake, 260 to 292-deg exhaust |
| Lift: |
0.370 to 0.460-in (at the lobe) |
| Centerline: |
106 to 108-deg |
| Lobe Separation Angle: |
108-deg |
| Installed Position: |
104-deg |
| Lifters: |
Crower, Comp, or LSM hydraulic-roller or solid-roller |
| Valvesprings: |
Comp or LSM |
| Seat Pressure: |
220-320 lbs |
| Open Pressure: |
500-800 lbs |
| Timing Chain: |
Billet, double-roller, optional Torrington roller bearings |
 | A detailed listing of the components of two of the most popular V-8 crate engines for traditional and late-model Pontiacs |  | The New Generation Of V-8 Crate Engines Increases The Options For Pontiac Fans: Butler Performance 461-467, GM Performance Parts 5.3L LS, And A DCI Motorsports 455 |
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