Promaxxx

General engine tech -- Drag Racing to Circle Track

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cuisinartvette
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Promaxxx

Post by cuisinartvette » Sun Nov 05, 2017 11:24 am

They ok or are they the Traxxx of cyl heads? :mrgreen:

Discussion going on another board thought Id ask the guys who dissect them a lot
not asking about flowz, meaning quality of hardware placement of everything else.
so whats the deal, good and bad?
?????

Walter R. Malik
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Re: Promaxxx

Post by Walter R. Malik » Sun Nov 05, 2017 1:23 pm

cuisinartvette wrote:
Sun Nov 05, 2017 11:24 am
They ok or are they the Traxxx of cyl heads? :mrgreen:

Discussion going on another board thought Id ask the guys who dissect them a lot
not asking about flowz, meaning quality of hardware placement of everything else.
so whats the deal, good and bad?
?????


I have used a few different Pro Maxx cylinder head castings and those all seem to be really good. I can not vouch for any of their other parts, though.

I have also used a couple pair of their cast iron "Bow Tie G.M. Vortec" coppies with very good luck.
http://www.rmcompetition.com
Specialty engine building at its finest.

87v6bird
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Re: Promaxxx

Post by 87v6bird » Sun Nov 05, 2017 2:50 pm

I have a set of their SBC heads on my car. Bought them back when they were switching from Patriot to Promaxx. I've got 20K miles on them and haven't had any problems with the hardware they came with.

NXBOY
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Re: Promaxxx

Post by NXBOY » Sun Nov 05, 2017 11:30 pm

Don't plan on using much power adder on a Windsor, They only reccondmend a max of 80 pounds of torque on the 351w. Nice casting, Very hard aluminum, good for bolts probably not so good for not cracking??https://www.facebook.com/#

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