WebApr 10, 2024 · Davin has a few tricks to share that aren’t free, but if you’re willing to spend some time at the workbench with a die grinder, there are horses to be freed from the cast iron (or aluminum) corral by porting your cylinder heads. The process and goal of porting is simple—to remove small amounts of metal that inhibit airflow through the ... Web133 rows · 44 Tunnel Port: 2.11/1.77: 67 cc: 303: RA=V Tunnel Port: 546184: 2.11/1.77: 56 cc: 1970: 350: 255 HP: 11: 1.96/1.66: 8.8 cr: 400: 265 HP: 11: 1.96/1.66: 8.6 cr: 400: 290 …
Porting & Machining Cylinder Heads - High Performance …
WebHeads can be used on your 1965 – 1979 Pontiac motor with displacements from 350 – 455 cid CNC’d combustion chambers available on 74 cc and 85 cc chambered heads CNC ported options of 290, 310, 325 and 340 cfm … WebMay 28, 2013 · Porting Pontiac iron heads is only worth the effort if you are concerned about an OEM appearance and want 60-80% of the performance you can get out of a set of aluminum heads. The cost of having iron heads ported professionally vs. getting a set of stock aluminum heads make aluminum heads a better option in terms performance results. creepy man in my dreams
Cylinder Head and Manifold Porting Services CFM Performance
Web41 rows · How to find the Pontiac V8 Cylinder heads casting numbers and Production date. Casting Number The number is usually cast at the center or the right or left exhaust port. … WebPerformance CNC Racing Technology - 5-Axis CNC Porting, Custom Machining And Cylinder Head Porting Service. Performance CNC specializes in Precise Reverse Engineering of … WebToday machinists can easily improve on any stock iron Pontiac head with the inclusion of hardened seats, screw-in studs, longer valves, taller installed height for after market springs working with high lift camshafts. Porting remains a viable means of improving flow for increased power. buck stagecoach