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MP stage VI Max wedge Alum. heads CNC porting #504972 10/23/09 08:11 PM 10/23/09 08:11 PM
Joined: Nov 2003 Posts: 915 Cincinnati OH B Bishop OP super stock
Bishop OP super stock B Joined: Nov 2003 Posts: 915 Cincinnati OH	I have a pair of NOS Alum. MP stage VI max wedge heads casting #4532657 & P/N 5249579 I would like to have CNC ported if anyone has a program for them if not who has ported them by hand any help out there. Wanting to put them on a low deck for my 17 1/2 jet boat Thanks Brian 5563215-StageVImaxwedge.JPG (443 downloads)

Re: MP stage VI Max wedge Alum. heads CNC porting [Re: Bishop] #504973 10/23/09 08:17 PM 10/23/09 08:17 PM
Joined: Nov 2003 Posts: 6,293 Rock Springs Bob_Coomer master
Bob_Coomer master Joined: Nov 2003 Posts: 6,293 Rock Springs	Chapman comes to mind Brian... I know he has a few programs, and those head flow astonishing numbers for the most part very small runners..There heads have very good port velocity etc. If your wanting the best..these guys should get the work.. http://www.chapmanracingheads.com/products/prodDetails.asp?pID=42 [color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]

Re: MP stage VI Max wedge Alum. heads CNC porting [Re: Bob_Coomer] #504974 10/23/09 08:33 PM 10/23/09 08:33 PM
Joined: Nov 2003 Posts: 915 Cincinnati OH B Bishop OP super stock
Bishop OP super stock B Joined: Nov 2003 Posts: 915 Cincinnati OH	Bob Last I'd heard Chapmans heads were $3500+ bare for a set of their CNC ported and on their website it states "must be a special casting" Brian

Re: MP stage VI Max wedge Alum. heads CNC porting [Re: Bishop] #504975 10/23/09 08:46 PM 10/23/09 08:46 PM
Joined: Mar 2006 Posts: 9,847 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,847 MI, usa	The castings used for the Chapman CNC heads had raised spring pockets and used longer valves. The problem with the Stage 6 head is that it used stock length valves. Big Block Mopar valves are about the shortest of any production cylinder head. When you go to port them you can't get the roof of the port high enough as it breaks thru the spring pocket. Jake at Jakes Automotive had some that worked pretty well, though the runner volume was small. He is a member here you could P.M him and find out who did the heads. Doug

Re: MP stage VI Max wedge Alum. heads CNC porting [Re: dvw] #504976 10/23/09 09:26 PM 10/23/09 09:26 PM
Joined: Jan 2003 Posts: 9,876 Weddington, N.C. Streetwize master
Streetwize master Joined: Jan 2003 Posts: 9,876 Weddington, N.C.	the Chaps use a longer 5.400" intake valve and the Max Wedge runs a 2.25" intake. They are listed as 285CC which would compare to about a 315cc in an Indy when you take the spacer (built into the Indy and Edelbrock victor) into account. I'm sure someone makes a CNC program but many of the Non-Chapman casting Stage VI's have porosity issues. last I heard Chapmans have an "out the door" price much lower than they were originally when they were onr of the only 360-380CFM heads in town. I have a pair and I'm very happy with them. 5563368-DSC00032x.JPG (279 downloads) WIZE World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker! https://www.youtube.com/watch?v=-mWzLma3YGI In Car: https://www.youtube.com/watch?v=PjXcf95e6v0

Re: MP stage VI Max wedge Alum. heads CNC porting [Re: Bishop] #504977 10/23/09 09:41 PM 10/23/09 09:41 PM
Joined: Nov 2003 Posts: 2,131 New Lenox IL cudadon top fuel
cudadon top fuel Joined: Nov 2003 Posts: 2,131 New Lenox IL	Quote: I have a pair of NOS Alum. MP stage VI max wedge heads casting #4532657 & P/N 5249579 I would like to have CNC ported if anyone has a program for them if not who has ported them by hand any help out there. Wanting to put them on a low deck for my 17 1/2 jet boat Thanks Brian Ray Barton did mine and I am happy with them. IIRC he helped with the developement of those heads. Don 5563398-8-2-093ofus.jpg (231 downloads) http://i131.photobucket.com/albums/p314/cudadon/BKD6_09_10_191A.jpg

Re: MP stage VI Max wedge Alum. heads CNC porting [Re: Bishop] #504978 10/23/09 10:48 PM 10/23/09 10:48 PM
Joined: Jan 2003 Posts: 31,046 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,046 Oregon	Modern Cylinder Head probably has a program for those heads. Maybe try Hughes Engines, Best Machine, Porter Racing Heads, Muscle Motors, etc. I'm sure with a little effort you can find someone who will port those heads for you.

Re: MP stage VI Max wedge Alum. heads CNC porting [Re: Bishop] #504979 10/24/09 12:49 AM 10/24/09 12:49 AM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger master
Brian Hafliger master Joined: Jan 2003 Posts: 5,486 SoCal	Quote: I have a pair of NOS Alum. MP stage VI max wedge heads casting #4532657 & P/N 5249579 I would like to have CNC ported if anyone has a program for them if not who has ported them by hand any help out there. Wanting to put them on a low deck for my 17 1/2 jet boat Thanks Brian I have some pics of my work on my website: www.immengines.com Those were only bracket style ported, meaning not full tilt. I think at .500 they went 310 and .700 they went 355 or 365...can't remember. Brian Hafliger

Re: MP stage VI Max wedge Alum. heads CNC porting [Re: Bishop] #504980 10/24/09 08:51 AM 10/24/09 08:51 AM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	I know Dwayne Porter (Porter Racing Heads) has experience w/ the MW Stage VIs, and a lot of Stage VI experience in general (especially finding & fixing the frequent QC issues). He doesn't post much on here any more, so the best thing is to look up his Moparts user profile for "fast68plymouth" and call him directly.

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