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Pontiac V-8 Crate Engines - Pontiac Tech
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| OILING SYSTEM |
| Windage Tray: |
None used; they shred and |
| come apart from rapid engine acceleration |
| Crank Scraper: |
None used |
| Oil Pan: |
GM stock replacement |
| Oil Pump: |
Melling high-volume 60-psi |
| Preparation: |
Disassembled, checked for clearance and |
| corrected if needed, deburred, cleaned and reassembled |
| HEADS |
| Casting Number: |
6X '75 to '78 |
| Chamber: |
Open |
| Head Mods: |
Hot-tanked, blasted, magged for cracks, |
| new guides if needed, exhaust seats opened up for |
| 1.77-in valve, ported for application, competition valve |
| job, bolt holes tapped, machined for positive |
| oil seals, cleaned and flow-tested |
| Combustion Chamber Volume: |
96-98cc |
| Maximum Flow at 28 Inches of Pressure |
| Intake: |
245-260 cfm at 0.550-in |
| Exhaust: |
215-225 cfm at 0.550-in |
| Compression Ratio: |
9.25:1-9.5:1 |
| Valves: |
DCI severe-duty one-piece stainless |
| steel, 2.11/1.77-in |
| Angles Used in Valve Job: |
35-45-60 deg |
| Retainers: |
Comp Cams 10-deg |
| Keepers: |
Comp Cams 10-deg |
| Valveguides: |
K-liner |
| Valve Seals: |
Best Gasket Viton positive |
| Rocker Studs: |
ARP 7/16-in |
| Rocker Arms: |
Comp Cams roller tip, 1.65:1 |
| Pushrods: |
Comp Cams chromoly 0.080-wall, 5/16-in x 9.300-in |
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