WebFeb 1, 2009 · All testing was performed on 91-octane pump gas. Equipped with the as-cast 190 cc heads, the 408 produced 463 hp at 5,600 rpm, and 480 lb-ft of torque at 4,300 rpm. Swapping on the CNC-ported ... WebSep 8, 2014 · Otherwise, cast iron heads have smaller valves, restricting air flow. They also have smaller closed combustion chambers, increasing compression ratio and power. Maybe it works out to be a wash, but those are some obvious differences. I would port and polish your 289 heads for cheap. I think you would be a lot happier with that.
Head Porting On Stock Ford 289? The H.A.M.B.
WebRCS CNC Ported Cylinder Heads: 2522 Library Rd Pittsburgh, PA. 15234 412-881-1000 Toll Free 1-888-881-1012: CNC Ported Heads: Home Page: OEM FORD 5.0 289 + CUI, CNC PORTED TO 465HP CYLINDER HEADS COMPLETE RACE READY OR STREET PERFORMANCE READY EXCHANGE OR OUT RIGHT WebFind many great new & used options and get the best deals for 1965 Ford Mustang 289 HIPO Cylinder Heads GT Cobra GT40 Small Block at the best online prices at eBay! Free shipping for many products! ... LARGE PORT CYLINDER HEADS FITS SUBARU JDM AVCS STI SPEC C 2.0ltr HIGH FLOW HEADS. $1,610.14 + $74.24 shipping. EDELBROCK 4264 VC … f sherman world of warships
289 head porting questain The H.A.M.B.
WebJul 13, 2005 · A well ported 125cc style head can acheive 440-525 hp. the 289 and 302 superstock combos are getting in the 500 hp region. This is even with stock valve diameters. I have worked with a road race 289 and we have … WebNov 1, 2013 · Check what you can: threaded holes for stripping, lay a straight edge across the tops of the valve stems and rocker studs, check for broken valve springs, see that all valve seals are installed and in good condition, etc. You would really need to completely disassemble the heads to check the valve guides, valves, springs, etc. Good luck Paul WebCylinder Head, PowerPort® 190, CNC Street Ported, Assembled, 1.46" Springs, Chromoly Retain, Small Mopar, Each Part Number: TFS-61417801-C00 5.0 out of 5 stars ( 4 ) f sherwood \u0026 sons ltd