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Re: CNC porting iron heads.
[Re: Max Weg]
#2976731
10/21/21 07:48 AM
10/21/21 07:48 AM
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Joined: Mar 2011
Posts: 3,286
Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,286
Michigan
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I race a fairly fast Max Wedge Superstock car, the first lite weight Plymouth shipped in 64 (in SS/EA I have ran 9.39 at 141), I developed my own engine program as their have not been any SS Max Wedges go this fast. I cross the Stripe at Sea Level at around 8700rpm, I did everything on the heads myself and I have done both original 518 and 518M heads, you have to know which ones to pick. The exhaust side does not need much work but to make 800hp the intake Port needs lots of creative work. Good luck with your Project and be selective on who you use.
Max Weg
And they say big blocks won’t turn! I bet it sounds sweet up top, I had one back in the 70s, a whole nuther sound. Yes it does!! It has a very flat power curve from 6800 to 8700 and could spin higher but there is no need. The biggest thing is crankshaft stability so a 2 bolt block does not like it, therefore a crossbolted conversion is required. The 518M heads latest version Exhaust Ports can be made to flow almost to good. With creative work on the intake ports you can make a stock port size with a 2.08" intake valve flow over 330cfm. And support North of 800hp Max Weg How many versions of the 518M and how do you identify them?
Last edited by Transman; 10/21/21 07:49 AM.
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Re: CNC porting iron heads.
[Re: A727Tflite]
#2976743
10/21/21 08:33 AM
10/21/21 08:33 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
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This now opens a HUGE can of worms in my mind! Why did they not just carry on reproducing the 1964 max wedge head into the 70's??? I know you are gonna say ''because we had the HEMI'' but that's a very expensive and specialist engine... Why go through years of Bigblock heads, 516, 915, 906, 236, 902 213, 452 blah, blah, blah... 440 max wedge would have worked better as the 413 bore was way too small for the MW heads. 426 solved some of them head to cylinder problems. What about a 400 max wedge, how good would that have been? And what about these W1 heads from Weslake??? Bigblock OVALPORTS and D-PORTS, WITH HEAT-CROSSOVER. Why were they not followed up too??? 2.250 intakes and 1.80 exhausts with offset intake rockers A pile of unique 'one off' items castings and forgings, never to be seen again! (until now) lol... 
Last edited by Gtxxjon; 10/21/21 08:40 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: CNC porting iron heads.
[Re: Gtxxjon]
#2976745
10/21/21 08:38 AM
10/21/21 08:38 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
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Isle of Sheeps
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Plus the extra cooling holes around the plugs 'as per 452 motorhome heads' too. I did run this engine in the 90's at the famous 'Santa Pod raceway' UK. But the valves were way too short for any 'meaningful' camshaft use, best was a 509 DC hydraulic. Then I found out the valves had been 'remade' by a previous owner at standard 440 length which was 0.250 too short! So now I have had some longer valves made so I can use 2.000'' valves springs and a 0.650 roller. Folks have been wanting to know what flow they have? Don't actually know this fact as all the paperwork was lost when Weslake Engineering 'shut-down'. I guess around 300cfm's as they are 'rough cast' and will need some port work to get the best outta them? The rumour was they were in 'hemi-territory' as a replacement when the Hemi got banned in Nascar? The Wingcars and other issues of the early 70's put paid to much of mother Mopars development work... 
Last edited by Gtxxjon; 10/21/21 08:50 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: CNC porting iron heads.
[Re: Gtxxjon]
#2976749
10/21/21 08:52 AM
10/21/21 08:52 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
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Some info can be found in the Mopar Performance book of the late 70's by Larry Schreib. Two sets of Big-Block development heads sent to the World famous Weslake Engineering in the late sixties. One set is featured in the book, the other set is still here in the sunny County of Kent UK...(the garden of England)  They got 'BAD PRESS' and then forgotten for 50 years...(how sad) 
Last edited by Gtxxjon; 10/21/21 09:00 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: CNC porting iron heads.
[Re: Gtxxjon]
#2976753
10/21/21 09:02 AM
10/21/21 09:02 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
enthusiast
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enthusiast
Joined: Nov 2020
Posts: 349
Isle of Sheeps
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maybe even more interesting?
No Intake was ever made, so a STR was modded to work...
Sand-cast Nascar carb 1969 only, makes the domi M1 look small lol.
Last edited by Gtxxjon; 10/21/21 09:06 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: CNC porting iron heads.
[Re: Gtxxjon]
#2976762
10/21/21 09:40 AM
10/21/21 09:40 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
enthusiast
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enthusiast
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Isle of Sheeps
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Page 92, a small footnote in history for the W1 Big-Block heads... Apparently this 'closed chamber' set suffered with flame 'cut-off' due to the position of the plug, next to the intake valve?
Last edited by Gtxxjon; 10/21/21 09:47 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: CNC porting iron heads.
[Re: Gtxxjon]
#2976763
10/21/21 09:41 AM
10/21/21 09:41 AM
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Joined: Jan 2003
Posts: 14,619
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,619
So. Burlington, Vt.
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Cool stuff.
Seems like pics of those heads pop up on line every few years.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: CNC porting iron heads.
[Re: fast68plymouth]
#2976766
10/21/21 09:50 AM
10/21/21 09:50 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
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Hi fast 68, That's me ''just getting them out there'' lol...(nearly 40 years, kept in my Dungeon). Dick Landy and Don Garlits both wanted the ex Weslake Dyno engine, but not enough money (yet) to coax them back across the Atlantic...  
Last edited by Gtxxjon; 10/21/21 09:52 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: CNC porting iron heads.
[Re: fast68plymouth]
#2976767
10/21/21 09:51 AM
10/21/21 09:51 AM
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Joined: Aug 2008
Posts: 941
Texas, USA
ChrgrCuda
super stock
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super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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Would it be fair to say that if the Max Wedge head design would have continued, that the horrible flat standard 4 barrel iron intake would have also had to be improved/redesigned to take advantage of the Max Wedge head flow?
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: CNC porting iron heads.
[Re: ChrgrCuda]
#2976769
10/21/21 09:54 AM
10/21/21 09:54 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
enthusiast
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Isle of Sheeps
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Too true!
Victor Edelbrock said to me ''you got the Sixpack manifold, what more do you need''?
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: CNC porting iron heads.
[Re: Gtxxjon]
#2976880
10/21/21 03:09 PM
10/21/21 03:09 PM
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Joined: Jan 2004
Posts: 9,073
fredericksburg,va
cudaman1969
Itch Nutz
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Itch Nutz
Joined: Jan 2004
Posts: 9,073
fredericksburg,va
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The max wedge heads were lost when the building burned that had the patterns-molds late 60s if I remember right. Racing was the only reason ANY of those heads were made .
Last edited by cudaman1969; 10/21/21 03:11 PM.
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Re: CNC porting iron heads.
[Re: cudaman1969]
#2976900
10/21/21 04:19 PM
10/21/21 04:19 PM
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Joined: Jan 2007
Posts: 685
pennsylvania
poboyengineering
mopar
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mopar
Joined: Jan 2007
Posts: 685
pennsylvania
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I remember seeing a proposal, appeared to be real, to use 6pack short blocks and manifolds with Max Wedge
heads in a Demon to target a SS class. (D I think).
DC saw it as a way to get the supply of MW heads replentished.
It may be ugly, but it sure is slow.
Girls comb their hair in rear view mirrors and the boys try to look so hard....
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Re: CNC porting iron heads.
[Re: poboyengineering]
#2977107
10/22/21 05:14 AM
10/22/21 05:14 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
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Mother Mopar dropped the ball with the W series heads!
When Steve Dulcich reviewed them in 2001 at Westech, he was 'blown away'...
50 years ago they had the castings already made and ready to go!
Calling them 'ECONO' probably made folks wince and feel under-whelmed.
No heat-crossover for the small-block W2 though?
The W1 Big-block was a viable replacement for the 915 head of 1967.
Instead we got the 906 and all the other non descript offerings...
Last edited by Gtxxjon; 10/22/21 05:18 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: CNC porting iron heads.
[Re: Gtxxjon]
#2977232
10/22/21 11:57 AM
10/22/21 11:57 AM
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Joined: Jan 2005
Posts: 12,570
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
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Posts: 12,570
Kalispell Mt.
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It really would not have taken much for the factory to bolt em on, surely they could have been made to pass emission regs of the day? Same with the magnum R/T head, actually they would have been even easier as there is nothing else needs to be different to put em on and surely with the much improved injector targeting MPG and emissions are improved (they no longer squirt into the side of the port)... I suspect they didn't use the magnum R/T in production because they were big inning the new hemi development and wanted as drastic of an improvement over the magnum as possible when they introduced them.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: CNC porting iron heads.
[Re: poboyengineering]
#2977241
10/22/21 12:15 PM
10/22/21 12:15 PM
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Joined: Mar 2011
Posts: 3,286
Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,286
Michigan
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I remember seeing a proposal, appeared to be real, to use 6pack short blocks and manifolds with Max Wedge
heads in a Demon to target a SS class. (D I think).
DC saw it as a way to get the supply of MW heads replentished. Hoover and Koffel put a package together that my friend raced. Started out as a destroked 361 with Maxie heads on it, single 4 barrel, 4 speed in Super Modified. Around 75 I think.
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Re: CNC porting iron heads.
[Re: A727Tflite]
#2977464
10/23/21 04:11 AM
10/23/21 04:11 AM
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Joined: Nov 2020
Posts: 349
Isle of Sheeps
Gtxxjon
enthusiast
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Isle of Sheeps
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Obviously the 906 was a first generation SMOG head! After that they flattened the 346 port and copied the small-block '915-J' head intake and fitted the 'Huber Hump' (that's what Vizard called it). Vizard and Dulcich did much work on the iron heads in 98 and 99 as a SWANSONG methinks? The 21st Century has been the Aluminum revolution for Big-blocks! The 493ci 'Torque Monster' built by Nick up in Canadia has opened my eyes to Big-blocks again! 650 pounds feet of torque is hemi beating stuff...  Hope that guy has got an 18 spline BOX!!! Nice 346 port work by Vizard, he was talking 270cfm's (on a good day) lol 
Last edited by Gtxxjon; 10/23/21 04:14 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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