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Mopar Performance Max Wedge Heads
#896388
01/04/11 11:01 PM
01/04/11 11:01 PM
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Joined: Jun 2006
Posts: 5,159
CT
GTX MATT
OP
master
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OP
master
Joined: Jun 2006
Posts: 5,159
CT
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Whats the deal with the Max Wedge heads Mopar Performance is selling, P5007494 and P5249824. They seem pretty cheap. Do they flow as well as the original Max Wedge heads? Do they need tons of work before you can use them? Tell me what you know.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: Mopar Performance Max Wedge Heads
[Re: Blues_Cuda]
#896390
01/05/11 04:34 AM
01/05/11 04:34 AM
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Joined: Jun 2006
Posts: 5,159
CT
GTX MATT
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OP
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Posts: 5,159
CT
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The 494s are $650 each, NHRA legal and have 2.08/1.88 valves, the 824s are 2.14/1.81 and not NHRA legal, and $660 each. I'm not sure what else is different between the two, but they both apparently have the cast pedestals and I know the 494s are revised for 6 bolt valve covers and the ports are apparently also revised, although I'm not sure in what way.
It sure seems cheap for heads that flow 300 CFM. I know they're not the best ports compared to what the aftermarket offers now from a flow vs size standpoint, but they do work. How did yours work for you? Did they need any real work?
Last edited by GTX MATT; 01/05/11 04:41 AM.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: Mopar Performance Max Wedge Heads
[Re: GTX MATT]
#896391
01/05/11 10:30 AM
01/05/11 10:30 AM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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Call Dwyane Porter, I'm pretty certain he has had a set or two thru the shop. He will let you know the real deal.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Mopar Performance Max Wedge Heads
[Re: GTX MATT]
#896392
01/05/11 11:27 AM
01/05/11 11:27 AM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
It sure seems cheap for heads that flow 300 CFM.
Where did you come up w/ that flow #? IIRC, "stock" MW heads were more like 240-260 CFM. Or are you talking about w/ porting?
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Re: Mopar Performance Max Wedge Heads
[Re: BradH]
#896393
01/05/11 12:04 PM
01/05/11 12:04 PM
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Joined: Jan 2003
Posts: 17,828
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
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Posts: 17,828
S.E. Michigan
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They were retooled circa mid 2007 along with many other items. Compared to the prev. generation that had super rough, very small ports....these new ones are much smoother, larger and much closer to oe max wedge stuff.
The chambers appear to be coming through on the small side
(77-78cc), so if they need to be nhra legal, plan on a little work in that area. Kind of nice to leave them alone for a 440-452 street/strip deal with a flat top, though.
300 seems like kind of a stretch, but is probably do-able? I'm sure the prototypes were flow tested but somehow that data was never dropped into my lap.
Rich H.
Esse Quam Videri
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Re: Mopar Performance Max Wedge Heads
[Re: BradH]
#896394
01/05/11 04:22 PM
01/05/11 04:22 PM
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Joined: Jan 2003
Posts: 74,937
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,937
U.S.S.A.
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Quote:
Quote:
It sure seems cheap for heads that flow 300 CFM.
Where did you come up w/ that flow #? IIRC, "stock" MW heads were more like 240-260 CFM. Or are you talking about w/ porting?
 I'd like to know where that number came from also ...
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Re: Mopar Performance Max Wedge Heads
[Re: Brian Hafliger]
#896397
01/05/11 09:54 PM
01/05/11 09:54 PM
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Joined: Jan 2003
Posts: 1,544
CT
mrrandyj
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,544
CT
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Re: Mopar Performance Max Wedge Heads
[Re: mrrandyj]
#896399
01/06/11 09:52 AM
01/06/11 09:52 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Here are some pictures of the new casting Max Wedge heads.
I'm glad they retooled the head w/o the freeze plug in front. Now they look correct. Just grind off that M after the 518.
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Re: Mopar Performance Max Wedge Heads
[Re: JohnRR]
#896400
01/17/11 10:16 PM
01/17/11 10:16 PM
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Joined: Jan 2003
Posts: 14,490
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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Posts: 14,490
So. Burlington, Vt.
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i just did some testing on a few of these......
i'll check my notes at the shop to see what the numbers actually were......but i can tell you it wasnt 300.....or even that close to 300.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: Mopar Performance Max Wedge Heads
[Re: B1Fish540]
#896402
01/18/11 03:03 PM
01/18/11 03:03 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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'62 413 Maxie had .495 with 300 degrees duration
'63 426 Maxie had a .509 with 300 degrees duration
426-II/426-A had .520 with 300 degrees duration.
'64 426 Maxi had .520 with 300 degrees duration on the 11.0:1 motors and .520 with 320 degrees duration on the 12.5:1 motors.
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Re: Mopar Performance Max Wedge Heads
[Re: fast68plymouth]
#896403
01/18/11 07:33 PM
01/18/11 07:33 PM
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Joined: Jan 2003
Posts: 17,828
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,828
S.E. Michigan
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Quote:
i just did some testing on a few of these......
i'll check my notes at the shop to see what the numbers actually were......but i can tell you it wasnt 300.....or even that close to 300.
Please post that when you get a chance 
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Re: Mopar Performance Max Wedge Heads
[Re: ZIPPY]
#896404
01/19/11 01:58 PM
01/19/11 01:58 PM
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Joined: Jan 2003
Posts: 3,504
DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,504
DFW
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I bought a set of MP MW heads last year and had them flowed. Head & Valve Size/Valve Lift> .200 .300 .400 .500 .600 .700 MP 518M 2.14 Int. Unported 145 202 237 253 268 277 MP 518M 1.81 Ex. Unported 113 152 174 190 200 206 The ports are untouched except for a blending of the valve job into the port. Not stock, but nothing exotic either. 
Floyd Lippencott IV
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Re: Mopar Performance Max Wedge Heads
[Re: mr_340]
#896405
01/19/11 02:05 PM
01/19/11 02:05 PM
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Joined: Jan 2003
Posts: 3,504
DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,504
DFW
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I believe these are the older castings. There is a "99" on top of the intake ports. I'm assuming this was cast in 1999.
Floyd Lippencott IV
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Re: Mopar Performance Max Wedge Heads
[Re: mr_340]
#896406
01/19/11 02:17 PM
01/19/11 02:17 PM
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Joined: Jan 2003
Posts: 3,504
DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,504
DFW
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I also have a set of old 286 Stage I heads. I had them flowed on another bench (homemade deal calibrated with the Superflow laminar flow element from the dyno). Only the intake was flowed as his rig wasn't setup to flow a Mopar exhaust.
Stage I 2.08 Int. Mild Port 134.5 190.5 227 257 280 289
Floyd Lippencott IV
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