The Shocker CNC 340cc BBC is a professional designed cylinder head using the latest CNC porting tools. These heads out flow the competition at a price that cannot be touched. Some comparable heads are double the cost of one Shocker 340 CNC. Flowing over 415 cfm, this head is on top of the heap. Now go out and shock the competition. BBC 340cc CNC Ported (Bare Heads). 2.300″/1.880″ valve sizes. 121cc-127cc chambers(Your Choice). Intake 172 267 318 358 383 398 409 413. Exhaust 139 190 236 265 285 300 304 307. LISTED PRICE LISTED IS BARE SET. For Assembled Heads for Flat Tappet cams up to. Stainless Steel Erson Competition Series 2.300″/1.880″ Valves 11/32. Erson Steel Retainers, 7 Locks, 7/16″ Rocker Studs, 3/8″ Guide Plates, Viton Seals. Roller cams up to. Erson Steel Retainers, 10 Locks, 7/16″ Rocker Studs, 3/8″ Guide Plates, Viton Seals. Erson Titanium Retainers, 10 Locks, 7/16″ Rocker Studs, 3/8″ Guide Plates, Viton Seals. The item “ProMaxx CNC Ported BBC 340cc Cylinder Heads” is in sale since Thursday, September 28, 2017. 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: BBC340CNC
• Brand: Promaxx
• Warranty: Yes