Re: Small block Mopar ProMaxx head testing
[Re: skicker]
#2374811
09/21/17 11:40 PM
09/21/17 11:40 PM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
master
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master
Joined: Jan 2003
Posts: 5,444
Indiana
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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.)
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Re: Small block Mopar ProMaxx head testing
[Re: skicker]
#2374819
09/21/17 11:49 PM
09/21/17 11:49 PM
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Joined: Feb 2005
Posts: 20,203 PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,203
PA.
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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
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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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Joined: Nov 2004
Posts: 3,518 pacific northwest
Stroker Scamp
master
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master
Joined: Nov 2004
Posts: 3,518
pacific northwest
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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
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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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Joined: Feb 2005
Posts: 20,203 PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,203
PA.
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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
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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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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
master
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master
Joined: Jan 2003
Posts: 5,444
Indiana
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""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.)
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Re: Small block Mopar ProMaxx head testing
[Re: RoadRunnerLuva]
#2681486
07/26/19 08:08 AM
07/26/19 08:08 AM
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Joined: Jan 2013
Posts: 39 MD
1965fish
member
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member
Joined: Jan 2013
Posts: 39
MD
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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
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Re: Small block Mopar ProMaxx head testing
[Re: 1965fish]
#2682757
07/30/19 04:35 PM
07/30/19 04:35 PM
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Joined: Aug 2007
Posts: 498 El Dorado Ca
65signet
mopar
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mopar
Joined: Aug 2007
Posts: 498
El Dorado Ca
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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
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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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Joined: Feb 2005
Posts: 20,203 PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,203
PA.
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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
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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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Joined: Jan 2003
Posts: 2,094 central texas
krautrock
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,094
central texas
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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??
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Re: Small block Mopar ProMaxx head testing
[Re: krautrock]
#2698156
09/16/19 05:52 PM
09/16/19 05:52 PM
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Joined: Feb 2005
Posts: 20,203 PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,203
PA.
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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
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Re: Small block Mopar ProMaxx head testing
[Re: pittsburghracer]
#2698434
09/17/19 12:41 PM
09/17/19 12:41 PM
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Joined: Jun 2018
Posts: 350 Mequon, WI
gzig5
enthusiast
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enthusiast
Joined: Jun 2018
Posts: 350
Mequon, WI
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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.
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Re: Small block Mopar ProMaxx head testing
[Re: Texas Backroader]
#2759524
04/03/20 03:13 PM
04/03/20 03:13 PM
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Joined: Feb 2005
Posts: 20,203 PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,203
PA.
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Hello, this is my first post on here. 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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