These new pair of CNC Ported Precision Race Engines Small Block Chevy heads include a revolutionary ultra casting designed after the Dart Pro 1 cylinder heads. Standard features are high grade aluminum alloy, bronze valve guides, valve seats for use with unleaded fuel, ends milled and drilled for accessories, and a straight spark plug angle. Intake features bolt pattern for both early and Vortec style intakes. These are the most affordable high quality aluminum cylinder heads on the market. Precision Race Engines SBC 218cc CNC Ported Head. Erson Performance 2.05 & 1.600 SS Valves. 550 Lift Flat Tappet Springs. Erson Chrome moly 7 degree retainers. Erson Hardened 7 degree locks. Erson 3/8 rocker arm studs. Erson 5/16 Guide Plates. CNC ported in house. Intake Runner Volume : 218cc. Exhaust Runner Volume : 89cc. Combustion Chamber Volume : 68cc. Intake Gasket : Fel-Pro 1206 or Equivalent. Header Gasket : Fel-Pro 1406 or Equivalent. Head Gaskets : 350/383 Fel-Pro 1003 , Cometic C5399, EW 111350MLS. Head Gaskets : 400/434 Fel-Pro 1004 , Cometic C5403, EW 111400MLS. Spark Plugs : NGK R5671A-7 / 4091 Hotter or colder or Equivalent. Head Bolt Washers : Manley 42102 , Mr. Head Bolt Torque : 70 f-lb. Intake cfm: 157 213 255 279 287 296 302. Exhaust cfm: 111 146 174 192 203 211 217 (no pipe). Fits Chevrolet 302DZ 305 327 350 383 400 427 434 stroker small blocks These are casted over seas however the quality of these heads are very good. We have thoroughly checked these heads out and they hold very tight tolerances. You will not be disappointed. They are CNC ported by us in house and is our design. NOTE : THESE ARE NOT PROCOMP HEADS. The item “Complete CNC Ported Aluminum Cylinder Heads Small Block Chevy. 550 Lift” is in sale since Thursday, June 7, 2018. This item is in the category “eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts”. The seller is “precisionautomachine” and is located in McMinnville, Tennessee. This item can be shipped worldwide.
- Manufacturer Part Number: S4400CNC
- Brand: PRECISION RACE ENGINES
- Warranty: Yes
- Part Brand: Precision Race Engines