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POLY build, and scrap Max Wedge #1644981
07/10/14 07:10 PM
07/10/14 07:10 PM
Joined: Jan 2008
Posts: 411
Big Island ,VA
J
JC Childress Offline OP
mopar
JC Childress  Offline OP
mopar
J

Joined: Jan 2008
Posts: 411
Big Island ,VA
Well..........I guess I've bumped my head but I'm gonna get rid of all the stuff I've accumulated to build a big inch Max Wedge engine and I'm gonna build the Poly 318 instead. I know the power level won't even be close at all but its different ( lots of folks dont even know what one is ), and its less work because I dont have to change motor mounts, transmission, driveshaft or anything else. I know its crazy but I like different and it should be pretty simple. The Poly engine is an interesting piece. I'll update with pics on what we do and after we dyno it I'll post a dyno sheet. Need any big block parts ? LOL


J.C. Childress (434) 665-9541
Re: POLY build, and scrap Max Wedge [Re: JC Childress] #1644982
07/10/14 07:44 PM
07/10/14 07:44 PM
Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi Offline
master
rickstershemi  Offline
master

Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
Quote:

Well..........I guess I've bumped my head but I'm gonna get rid of all the stuff I've accumulated to build a big inch Max Wedge engine and I'm gonna build the Poly 318 instead. I know the power level won't even be close at all but its different ( lots of folks dont even know what one is ), and its less work because I dont have to change motor mounts, transmission, driveshaft or anything else. I know its crazy but I like different and it should be pretty simple. The Poly engine is an interesting piece. I'll update with pics on what we do and after we dyno it I'll post a dyno sheet. Need any big block parts ? LOL




I applaud your decision....I love different myself .... will be watching your build...Thanks

Rickster

Re: POLY build, and scrap Max Wedge [Re: rickstershemi] #1644983
07/10/14 08:03 PM
07/10/14 08:03 PM
Joined: May 2003
Posts: 6,545
Downtown Roebuck Ont
Twostick Offline
Still wishing...
Twostick  Offline
Still wishing...

Joined: May 2003
Posts: 6,545
Downtown Roebuck Ont
426 inch poly sounds cool.

Kevin

Last edited by Twostick; 07/10/14 08:08 PM.
Re: POLY build, and scrap Max Wedge [Re: Twostick] #1644984
07/10/14 09:37 PM
07/10/14 09:37 PM
Joined: Jan 2008
Posts: 4,254
Canada
WO23Coronet Offline
master
WO23Coronet  Offline
master

Joined: Jan 2008
Posts: 4,254
Canada
I know the stock Poly heads don't flow extremely well stock but what are the valve angles like from a performance view? I know they're a canted valve design but that's about it.

Re: POLY build, and scrap Max Wedge [Re: WO23Coronet] #1644985
07/10/14 11:26 PM
07/10/14 11:26 PM
Joined: Jan 2003
Posts: 2,340
west palm beach, florida
modelmakerinc Offline
top fuel
modelmakerinc  Offline
top fuel

Joined: Jan 2003
Posts: 2,340
west palm beach, florida
Just keep in mind, Even though the idea is not to sell it, that you are going to spend money towards an absolute loss.

the Max Wedge stuff if built right you can get a good amount of your value back "IF" it does ever get sold.


Exceptional Architectural, Yacht and Automotive scale models. e-mail modelmakerinc@att.net for a portfolio review. www.modelmakerinc.com
Re: POLY build, and scrap Max Wedge [Re: modelmakerinc] #1644986
07/10/14 11:45 PM
07/10/14 11:45 PM
Joined: Dec 2013
Posts: 4,651
Wichita
G
GY3 Online content
master
GY3  Online Content
master
G

Joined: Dec 2013
Posts: 4,651
Wichita
PM sent.

Re: POLY build, and scrap Max Wedge [Re: GY3] #1644987
07/11/14 10:34 AM
07/11/14 10:34 AM
Joined: Jan 2008
Posts: 411
Big Island ,VA
J
JC Childress Offline OP
mopar
JC Childress  Offline OP
mopar
J

Joined: Jan 2008
Posts: 411
Big Island ,VA
replied


J.C. Childress (434) 665-9541
Re: POLY build, and scrap Max Wedge [Re: JC Childress] #1644988
07/11/14 11:13 AM
07/11/14 11:13 AM
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
Steve1118 Offline
master
Steve1118  Offline
master

Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
Watch Chrysler Power magazine. They've got some guys that are really hot on the Poly deal....Hot Heads is making some good heads for them. There are also some good cams available, and some good intake/carb combos. I think it has a lot of potential.

www.chryslerpower.com


"Old age and treachery trumps youth and enthusiasm, every time!"

East Central Director / Chrysler Power Magazine

www.reasbeckracing.webs.com
Re: POLY build, and scrap Max Wedge [Re: JC Childress] #1644989
07/11/14 11:14 AM
07/11/14 11:14 AM
Joined: Aug 2006
Posts: 2,141
junction city oregon
V
viperblue72 Offline
top fuel
viperblue72  Offline
top fuel
V

Joined: Aug 2006
Posts: 2,141
junction city oregon
I believe you can make a 392 with the 4" arm.
And yes you bumped your head.

Re: POLY build, and scrap Max Wedge [Re: JC Childress] #1644990
07/11/14 12:21 PM
07/11/14 12:21 PM
Joined: Jun 2008
Posts: 577
Arkansas
A
Adrielp Offline
mopar
Adrielp  Offline
mopar
A

Joined: Jun 2008
Posts: 577
Arkansas
Quote:

Well..........I guess I've bumped my head but I'm gonna get rid of all the stuff I've accumulated to build a big inch Max Wedge engine and I'm gonna build the Poly 318 instead. I know the power level won't even be close at all but its different ( lots of folks dont even know what one is ), and its less work because I dont have to change motor mounts, transmission, driveshaft or anything else. I know its crazy but I like different and it should be pretty simple. The Poly engine is an interesting piece. I'll update with pics on what we do and after we dyno it I'll post a dyno sheet. Need any big block parts ? LOL




With an updated valve train and some good porting, POlY's have lots of potential. There is so much material in that head to play with. I was convinced it would make a great Super Stock GT combo if not for the awful OEM valve sizing. If mopar wasn't so concerned about weight, this head would of put SB Mopars way ahead of the game.


Adriel Paradise
Substation Design Engineer III
Re: POLY build, and scrap Max Wedge [Re: Adrielp] #1644991
07/11/14 01:51 PM
07/11/14 01:51 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
Time for some rain on this parade The Poly heads, all versions that Mopar made, where a compromise to save money over making the hemi heads and valve train parts When Mopar smarten up and introduce the conventional wedge heads on the 273 in 1964 and later on all the other SB those motors started to make decent power and started getting decent mileage OP, its your choice, flog that old dead technoligy piece or step up to a newer, better choice


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: POLY build, and scrap Max Wedge [Re: Steve1118] #1644992
07/11/14 02:50 PM
07/11/14 02:50 PM
Joined: Oct 2007
Posts: 4,205
New York
polyspheric Offline
master
polyspheric  Offline
master

Joined: Oct 2007
Posts: 4,205
New York
There are no after-market poly heads.


Boffin Emeritus
Re: POLY build, and scrap Max Wedge [Re: polyspheric] #1644993
07/11/14 03:19 PM
07/11/14 03:19 PM
Joined: Oct 2007
Posts: 1,973
SoCal
J
jake4cars Offline
top fuel
jake4cars  Offline
top fuel
J

Joined: Oct 2007
Posts: 1,973
SoCal
JC, send me an e-mail jlemire426@gmail.com I will send you photos of the poly in my 67 Valiant that I just drove trouble free from Indiana. It's no tire fryer but it does make impressive torque.

Gary has everything imaginable for polys and is trying to talk me into a stroker version but I have me mind set on a 408 sb with a blower, after all, it's only a street car.

I am planning on running my car at Fontana soon to do a before and after so when I do I will post the times.

Joey

Re: POLY build, and scrap Max Wedge [Re: jake4cars] #1644994
07/11/14 03:48 PM
07/11/14 03:48 PM
Joined: Jan 2010
Posts: 588
Franklin, TN
23T Hemmee Offline
mopar
23T Hemmee  Offline
mopar

Joined: Jan 2010
Posts: 588
Franklin, TN
JC, your original post said everything that needed to be said. There are enough cookie-cutter combo's out there to sink a battleship. Go for it and have fun, good luck with it....


Ronny
6.789 @ 198.63 **.956 Brand New 60'***
4.17@ 169 1/8th mile
John 14:6

https://www.youtube.com/watch?v=TUku_hjYRh8
Re: POLY build, and scrap Max Wedge [Re: 23T Hemmee] #1644995
07/11/14 04:04 PM
07/11/14 04:04 PM
Joined: Jan 2008
Posts: 411
Big Island ,VA
J
JC Childress Offline OP
mopar
JC Childress  Offline OP
mopar
J

Joined: Jan 2008
Posts: 411
Big Island ,VA
Exactly. I'm not trying to build a race engine. I work at a race engine shop....all day, every day. If I wanted 1200HP and 900 ft lbs tq......of course I'd choose a different combo. This is gonna be the simplest,least expensive and quickest route to be out cruising......and guess what....DIFFERENT....imagine how many folks will look under the hood and say " what is that ? " It will sound real nasty, still have over 400 HP and 400 ft lbs TQ....if not, its no biggie....

Thanks for all the input. I do appreciate it.


J.C. Childress (434) 665-9541
Re: POLY build, and scrap Max Wedge [Re: JC Childress] #1644996
07/11/14 08:11 PM
07/11/14 08:11 PM
Joined: Oct 2007
Posts: 1,973
SoCal
J
jake4cars Offline
top fuel
jake4cars  Offline
top fuel
J

Joined: Oct 2007
Posts: 1,973
SoCal
For what it's worth, I pulled into Bob Mazzolini's shop and opened the hood and it took him a minute to recognize it and then we had a good laugh,

it is different,like I stated in another post, driving half way across country in a 4-speed A-body with 3:23's it averaged 14 mpg and approx. cruising speed of 68-70, the engine has ported heads and intake, completely stock bottom end and a Scneider solid lifter cam.

There was a guy at the Riverside California cruise in a couple of months ago with a poly with twin throttle bodies and electronic fuel injection, very cool car.

Joey

Re: POLY build, and scrap Max Wedge [Re: jake4cars] #1644997
07/12/14 06:14 PM
07/12/14 06:14 PM
Joined: Jun 2008
Posts: 3,913
usa
L
lewtot184 Offline
master
lewtot184  Offline
master
L

Joined: Jun 2008
Posts: 3,913
usa
it's your time and your money, so make yourself happy. I applaud the difference and would be very interested in how this works out.

Re: POLY build, and scrap Max Wedge [Re: lewtot184] #1644998
07/12/14 10:59 PM
07/12/14 10:59 PM
Joined: Jul 2005
Posts: 727
Cleveland Ohio
S
sportfury70 Offline
super stock
sportfury70  Offline
super stock
S

Joined: Jul 2005
Posts: 727
Cleveland Ohio
lots of folks dont even know what one is

I know what one is- its the 318 wide block

Re: POLY build, and scrap Max Wedge [Re: JC Childress] #1644999
07/12/14 11:50 PM
07/12/14 11:50 PM
Joined: Dec 2004
Posts: 10,549
Rittman Ohio
fourgearsavoy Offline
I Live Here
fourgearsavoy  Offline
I Live Here

Joined: Dec 2004
Posts: 10,549
Rittman Ohio
I remember years ago Mancini had some headers for Poly heads in their clearance section maybe they still have some left
The heads look like they could flow with some work but then you mentioned you were building a basic good running street so flow numbers at low lift should be easy to attain. Every once in a while an aluminium intake pops up on Ebay.
Did RAS make rockers for them
Gus

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Re: POLY build, and scrap Max Wedge [Re: JC Childress] #1645000
07/13/14 12:34 AM
07/13/14 12:34 AM
Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
Hemi Allstate Offline
master
Hemi Allstate  Offline
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Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
Is this 318" the same engine family as a 1957 354" non Hemi engine?

Last edited by Hemi Allstate; 07/13/14 02:13 AM.

http://marsh-racing.com/Mark%20Mahorney-Allstate.htm
1996 Ram 1500 Sport
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1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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