Performance Diesel and Performance Gas machine shop Custom oversize valves available for Cummins, Duramax, and Powerstroke
Dodge/Cummins 3.9, 5.9, or 6.7L
Valve Train
Options:
Valve Train
Options:
5293 Ward Road, Unit #3 Arvada, CO 80002 303-420-6218
Complete stock engine builds as well as custom performance platforms are available. We can build any cam , compression, air intake, fuel, or cylinder head configuration for your project. We always use your engine castings unless specified. B, BT, 12V, ISB, ISBe.
Different diameter seats used:
Current Valve Upgrades: 24 valve 5.9L and 6.7L engines.
Stock Valves: 1.297" intake and exhaust diameters/5.9L & 6.7L
MHP Street Performance : 1.340"
MHP Race Performance: 1.385"
Stock Valves: 1.297" intake and exhaust diameters/5.9L & 6.7L
MHP Street Performance : 1.340"
MHP Race Performance: 1.385"
Upgraded Mountain High Performance Street or Race Performance larger diameter valves require larger valve seat installation. The use of larger, high nickle content seats will allow for huge improvement in the valve bowl configuration on both 5.9L and 6.7L heads. The Street Performance valve requires our 1.250" ID seat, while the Race Performance valve can utilize either our 1.250" or 1.310" seat for optimal flow. The bowl blending requirements are suggested and limited by the seat inside diameters. The adjoining pictures show visually the huge difference possible with either combination. Block bore size limits use of the Race valves. Please call for info.