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Re: Small block Mopar ProMaxx head testing [Re: skicker] #2374811
09/21/17 11:40 PM
09/21/17 11:40 PM
Joined: Jan 2003
Posts: 5,442
Indiana
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YO7_A66 Offline
master
YO7_A66  Offline
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Y

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Indiana
Todd Marsh (Sasquatch) should be able to get you bare castings. Call Todd for his pricing before you order from Summit or Jegs. 👍


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Small block Mopar ProMaxx head testing [Re: skicker] #2374819
09/21/17 11:49 PM
09/21/17 11:49 PM
Joined: Feb 2005
Posts: 20,116
PA.
pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
"Little"John

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PA.
Originally Posted By skicker
So I'm thinking I may want a set of the Promaxx for the 416 we're building for Dad's Duster...Would really be interested in bare castings...any advice???




Great talking to you today.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: Small block Mopar ProMaxx head testing [Re: pittsburghracer] #2374929
09/22/17 11:03 AM
09/22/17 11:03 AM
Joined: Jun 2005
Posts: 5,097
Western Md.
skicker Offline
"The Champ"
skicker  Offline
"The Champ"

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Western Md.
Thx for the heads up... bow
Have fun this w/e... up


...FAFO...
Re: Small block Mopar ProMaxx head testing [Re: skicker] #2407086
11/21/17 10:49 PM
11/21/17 10:49 PM
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pacific northwest
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Stroker Scamp Offline
master
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pacific northwest
any more input on these heads?


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105
Re: Small block Mopar ProMaxx head testing [Re: Stroker Scamp] #2407089
11/21/17 10:55 PM
11/21/17 10:55 PM
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pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
"Little"John

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PA.
Originally Posted By Stroker Scamp
any more input on these heads?



Not from me. As luck would have it I grabbed a set of Edelbrock heads when Summit was still giving out the 10% off coupons and threw them on a shelf. I am slowly playing with them finally and my next purchase will probably be a set of the newer Victor heads. I wish the price would come down some on those.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: Small block Mopar ProMaxx head testing [Re: Stroker Scamp] #2407137
11/22/17 12:24 AM
11/22/17 12:24 AM
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Posts: 5,442
Indiana
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YO7_A66 Offline
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Indiana
""Any more input on these heads""
Not the stock Promaxx but I do on Todds Sidewinders. I bent a valve on my 2.02" bowl blended J's this past Spring and that is when I bought Todds bowl ported Sidewinders for my stock stroke 340 (+.040"). With no other changes, new heads/gaskets came out to the same 9.7 compression as my J's. I was expecting the bottom end to be a little soggy since these heads were tested at 280@.550". At 30mph, I can hit WOT and spin my new Nitto 275's. I tried this several times on several different occasions and each time I was breaking traction. It pulls harder on the top end at WOT too. I purposely did not change the cam (mostly because I did not have the cash) because I wanted to feel the difference with just a good head swap. Now after running these on the street for the late Summer and early Fall, I now want to make a cam swap this Winter. I think there is some more in it than my current 226/238@.050", .538"/.528" hydraulic FT combo feels.
My Yella Terra 1.65's bolted right up and my 5/16" push rods had no clearance issues with the existing HFT lifters. My Powermaster alternator mounted up just like before, and my stock valve covers fit too. I did have to go to a one step hotter spark plug after a few test drives. But this was an easy head swap for the average wrencher like myself. 👍


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Small block Mopar ProMaxx head testing [Re: YO7_A66] #2681472
07/26/19 02:34 AM
07/26/19 02:34 AM
Joined: Jan 2003
Posts: 5,283
Land 'O Lakes
RoadRunnerLuva Offline
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RoadRunnerLuva  Offline
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Land 'O Lakes
After reading entire thread, (took awhile)...anyone using these ProMaxx SMALL BLOCK heads, currently in a street/race car with any GOOD results, that you can divulge?? If so, please give specs on your engine combo, type car..etc...... popcorn


Plymouth Makes It!
Re: Small block Mopar ProMaxx head testing [Re: RoadRunnerLuva] #2681486
07/26/19 08:08 AM
07/26/19 08:08 AM
Joined: Jan 2013
Posts: 39
MD
1965fish Online content
member
1965fish  Online Content
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Posts: 39
MD
I think they are a very good head for the price.
Better than Edelbrocks in my opinion.
They were on my 394 in my 3500 lb Dakota. Went 10.80 at 121mph.
394 cu 3.79 stroke 4.070 bore
11.4 comp
Eagle H beam rods JE flat top pistons
Lunati .581 flat tappet cam
unported 171cc Promaxx heads
Comp cam roller rockers
M1 intake
1000 cfm Holley carb
These Promaxx heads dont have a lot of runs or street time on them which are for sale now. Have not posted them anywhere yet.
I'm swapping them out for the new Trick Flow 190's.
Let me know if you're interested in them.

Last edited by 1965fish; 07/29/19 06:30 AM.

1965 Plymouth Barracuda Formula S
1965 Plymouth Valiant 200 Convertible
1965 Plymouth Valiant 200 Station wagon 408 6.52 @ 104
2001 Dodge Dakota 394 6.63 @ 103 1/8 mile 10.64 @ 123 1/4 mile
1965 Plymouth Valiant Signet 2DR HT
Re: Small block Mopar ProMaxx head testing [Re: 1965fish] #2682757
07/30/19 04:35 PM
07/30/19 04:35 PM
Joined: Aug 2007
Posts: 498
El Dorado Ca
6
65signet Offline
mopar
65signet  Offline
mopar
6

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Posts: 498
El Dorado Ca
We built a SBF with the 180cc intake, 10-1 comp .525 lift cam, edelbrock duel plane intake, made 450 hp only 331ci engine, we also built a small mopar, but engine has not been installed yet.


1965 Plymouth Barracuda 273 M/SA
1970 Plymouth Duster 360/904 10.60s with J heads
Re: Small block Mopar ProMaxx head testing [Re: 65signet] #2683565
08/02/19 12:34 AM
08/02/19 12:34 AM
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Posts: 5,283
Land 'O Lakes
RoadRunnerLuva Offline
master
RoadRunnerLuva  Offline
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Land 'O Lakes
Anyone else using these heads on a SMALL BLOCK Mopar? Results? Specs of engine/trans/converter/gear? popcorn


Plymouth Makes It!
Re: Small block Mopar ProMaxx head testing [Re: RoadRunnerLuva] #2683765
08/02/19 05:17 PM
08/02/19 05:17 PM
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Land 'O Lakes
RoadRunnerLuva Offline
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RoadRunnerLuva  Offline
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Land 'O Lakes
bump


Plymouth Makes It!
Re: Small block Mopar ProMaxx head testing [Re: RoadRunnerLuva] #2683798
08/02/19 06:56 PM
08/02/19 06:56 PM
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Posts: 20,116
PA.
pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
"Little"John

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PA.
Originally Posted by RoadRunnerLuva
bump




Might want to ask this over at A body’s only too


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: Small block Mopar ProMaxx head testing [Re: pittsburghracer] #2683913
08/03/19 02:30 AM
08/03/19 02:30 AM
Joined: Jan 2003
Posts: 5,283
Land 'O Lakes
RoadRunnerLuva Offline
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RoadRunnerLuva  Offline
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Yup...might do that John wink


Plymouth Makes It!
Re: Small block Mopar ProMaxx head testing [Re: 1965fish] #2698144
09/16/19 05:12 PM
09/16/19 05:12 PM
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Posts: 2,094
central texas
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krautrock Offline
top fuel
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K

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Posts: 2,094
central texas
Originally Posted by 1965fish
I think they are a very good head for the price.
Better than Edelbrocks in my opinion.
They were on my 394 in my 3500 lb Dakota. Went 10.80 at 121mph.
394 cu 3.79 stroke 4.070 bore
11.4 comp
Eagle H beam rods JE flat top pistons
Lunati .581 flat tappet cam
unported 171cc Promaxx heads
Comp cam roller rockers
M1 intake
1000 cfm Holley carb
These Promaxx heads dont have a lot of runs or street time on them which are for sale now. Have not posted them anywhere yet.
I'm swapping them out for the new Trick Flow 190's.
Let me know if you're interested in them.


did you put some trick flow heads on and pickup any power over the promaxx??

Re: Small block Mopar ProMaxx head testing [Re: krautrock] #2698156
09/16/19 05:52 PM
09/16/19 05:52 PM
Joined: Feb 2005
Posts: 20,116
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pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
"Little"John

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Posts: 20,116
PA.
Originally Posted by krautrock
Originally Posted by 1965fish
I think they are a very good head for the price.
Better than Edelbrocks in my opinion.
They were on my 394 in my 3500 lb Dakota. Went 10.80 at 121mph.
394 cu 3.79 stroke 4.070 bore
11.4 comp
Eagle H beam rods JE flat top pistons
Lunati .581 flat tappet cam
unported 171cc Promaxx heads
Comp cam roller rockers
M1 intake
1000 cfm Holley carb
These Promaxx heads dont have a lot of runs or street time on them which are for sale now. Have not posted them anywhere yet.
I'm swapping them out for the new Trick Flow 190's.
Let me know if you're interested in them.


did you put some trick flow heads on and pickup any power over the promaxx??




Pretty sure a guy over on A body’s only bought his ProMax heads. Still waiting to hear results


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: Small block Mopar ProMaxx head testing [Re: pittsburghracer] #2698434
09/17/19 12:41 PM
09/17/19 12:41 PM
Joined: Jun 2018
Posts: 350
Mequon, WI
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gzig5 Offline
enthusiast
gzig5  Offline
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Joined: Jun 2018
Posts: 350
Mequon, WI
Originally Posted by pittsburghracer
Originally Posted by krautrock
Originally Posted by 1965fish
I think they are a very good head for the price.
Better than Edelbrocks in my opinion.
They were on my 394 in my 3500 lb Dakota. Went 10.80 at 121mph.
394 cu 3.79 stroke 4.070 bore
11.4 comp
Eagle H beam rods JE flat top pistons
Lunati .581 flat tappet cam
unported 171cc Promaxx heads
Comp cam roller rockers
M1 intake
1000 cfm Holley carb
These Promaxx heads dont have a lot of runs or street time on them which are for sale now. Have not posted them anywhere yet.
I'm swapping them out for the new Trick Flow 190's.
Let me know if you're interested in them.


did you put some trick flow heads on and pickup any power over the promaxx??




Pretty sure a guy over on A body’s only bought his ProMax heads. Still waiting to hear results


That was me. I'm everywhere. I bought his old heads but I won't have them mounted until next spring. They are used but look really good. I'll take them apart this winter for inspection and to familiarize myself with them. I don't know where @1965fish is with his TF project.

Re: Small block Mopar ProMaxx head testing [Re: gzig5] #2759486
04/03/20 01:52 PM
04/03/20 01:52 PM
Joined: Apr 2020
Posts: 11
Texas
Texas Backroader Offline
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Texas Backroader  Offline
member

Joined: Apr 2020
Posts: 11
Texas
Hello, this is my first post on here. smile I'm researching to prepare for my first build. I am up in the air on making a decision between the Promaxx and Edelbrock heads for my 318. Have the Promaxx heads still shown to be reliable since the last post on this thread? Thanks!!!

Re: Small block Mopar ProMaxx head testing [Re: Texas Backroader] #2759524
04/03/20 03:13 PM
04/03/20 03:13 PM
Joined: Feb 2005
Posts: 20,116
PA.
pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
"Little"John

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Posts: 20,116
PA.
Originally Posted by Texas Backroader
Hello, this is my first post on here. smile I'm researching to prepare for my first build. I am up in the air on making a decision between the Promaxx and Edelbrock heads for my 318. Have the Promaxx heads still shown to be reliable since the last post on this thread? Thanks!!!




I only know a couple of guys that bought and used them. The set I checked out are being used but not raced.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




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