WebJan 11, 2010 · A recent article in "Mopar enthusiast", December, 2009 issue, has a very candid article on Dave Dudeks's 69 Hemi Roadrunner set up for F.A.S.T. class. Mid 10's, 3,700 lbs on F70-15 bias ply street tires! The article says his production iron heads flow 415 cfm, CNC ported by "Modern cylinder head" (non proprietary configuration). WebCylinder heads are stock appearing from the outside. New Kaase design Intake manifold available in 4150 or 4500 series flange. New stock appearing (Boss 429) valve covers available. Pricing on Boss Nine Cylinder Heads and Components: Bare Cylinder heads $1800.00 each. or $3600.00 pair. Complete Boss Nine Cylinder heads $4350.00 pair.
212cc Tillotson Hemi Engine
WebSep 1, 2024 · The B2 comes CNC ported with plenty of room to enlarge for big cubes. The valve size is 2.200˝ on the intake and 1.800˝ on the exhaust. The intake seats will allow 2.300˝ diameter valves to be cut in with valve to valve still adequate for the big cam grinds. It will support bore sizes from 4.125˝ to 4.500˝. WebCFH TOTAL FLOW HIGH PORT HEMI HEADS 2.400 titanium xceldyne intake valves 1.900 titanium xceldyne exhaust valves (15 runs on valves) Dual PAC valve springs (15 runs) … tractor dikhao
How to Choose the Best Gen II 426 Hemi Heads - Mopar DiY
WebMay 20, 2024 · Predator stock 212cc hemi 4-stroke OHV's 6.5hp. has flattop piston that in the end lightly sandwiched a piece of welding slag smaller than a .177" BB between itself and the head. Stock stroke doesn't get increased by .020" overlength ARC billet rod, but does get piston .020" closer to head. WebFeb 26, 2006 · Joined Oct 19, 2004. 5,793 Posts. #2 · Feb 18, 2006. IME the Hemi Design heads and matched setup is a very good performer. A few around here have used them with great success. Problem is HP / dollar. Many are enticed into wringing the last drop out of a 95/98" and you have to admit with the cost of these parts you have entered the high-end … WebThe 392 has 2.00″ intake and 1.750″ exhaust valves. All the heads in stock form flow about 225 CFM maximum. With all out porting and big intake valves, the ‘54 and ‘55 heads can be make to flow as much as 15% more than the ‘56 – ‘58 heads. In total flow numbers, the ‘56 – ‘58 will flow 305 – 315 CFM, and the ‘54 ... theroots fm