promaxx patriot performance heads?
Thread Starter
Registered User
Joined: Jun 2014
Posts: 3
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From: fort polk Louisiana
promaxx patriot performance heads? I have a 00 camaro ss with a lil work to it. I have a z06 cam, viper spec trans, stage 3 monster clutch, long headers with custom flowmaster exhuast, 4 10 gears, getting fast 92mm intake manifold and ptm 92 throttle body. I want heads to, does anyone know anything about promaxx patriot performance 64cc stage 3 heads or suggest anyother heads?
I'd stay away from Patriot or whatever they are called this month.
Do some searches on here. Give yourself a budget and find the best you can get at a given price point.
If you can squeeze $2k out of heads you have quite a few options.
Do some searches on here. Give yourself a budget and find the best you can get at a given price point.
If you can squeeze $2k out of heads you have quite a few options.
I think this is good advice. Patriot, proform, promax, etc, are cheap off shore copies of real performance parts. People here have spent a lot of money trying to get them to work. But in the end they dump them and use the quality parts they should have bought in the first place.
Never buy cheap parts, they're too expensive.
Never buy cheap parts, they're too expensive.
Thread Starter
Registered User
Joined: Jun 2014
Posts: 3
Likes: 0
From: fort polk Louisiana
My dad brought up a good point the engine has over 100 thousand miles on it, would I really want to tear into the heads cam manifold throttle body and injectors with out rebuilding the bottom half?
with the heads off its just too easy to go ahead to upgrade the pistons and rods, replace bearings, to not do anything and regret it later, and I'm using afr 205 heads, but you should get a cam that would benefit from a head swap first
On The Tree
Joined: Dec 2011
Posts: 143
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From: Gold Coast, Australia
If patriot are anything like the pro-comp Chinese cast heads - don't bother!!
I went down the path of buying heads enticed by the cheap price. Yes I had read all the bad views before buying but thought for the price surely they gotta be better than standard heads.
Paid $650 for a bare set of the ls1 pro-comp (or speed master). I could tell straightaway out of the box they were not the best. CNC job was poor. Parts had even been missed by the CNC tool totally.
So I sent them off to my local cylinder head guy. The port sizes were all inconsistent sizes for starters, so plunge cutting was required to equal the port sizes. A 3 angle valve job was performed, stainless 2.02 and 1.55 valves fitted, A lot of blending into the seats was also done. The heads were then flowed.
All up it was $2000 invested into the heads, assembled ready to bolt on.
The results were 270/194 cfm - 565hp potential flow.
For $2000 I could have got MUCH better heads that would have out flowed these ones by at least 30cfm.
The gain from cam only to heads was from 359hp to its current 373hp at wheels.
14hp for $2000!!!!!??????!!!!!
So if patriot are similar or use same cast, or same CNC program DONT BUY THEM.
Dart, trick flow, AFR or send 243's to TEA.
I went down the path of buying heads enticed by the cheap price. Yes I had read all the bad views before buying but thought for the price surely they gotta be better than standard heads.
Paid $650 for a bare set of the ls1 pro-comp (or speed master). I could tell straightaway out of the box they were not the best. CNC job was poor. Parts had even been missed by the CNC tool totally.
So I sent them off to my local cylinder head guy. The port sizes were all inconsistent sizes for starters, so plunge cutting was required to equal the port sizes. A 3 angle valve job was performed, stainless 2.02 and 1.55 valves fitted, A lot of blending into the seats was also done. The heads were then flowed.
All up it was $2000 invested into the heads, assembled ready to bolt on.
The results were 270/194 cfm - 565hp potential flow.
For $2000 I could have got MUCH better heads that would have out flowed these ones by at least 30cfm.
The gain from cam only to heads was from 359hp to its current 373hp at wheels.
14hp for $2000!!!!!??????!!!!!
So if patriot are similar or use same cast, or same CNC program DONT BUY THEM.
Dart, trick flow, AFR or send 243's to TEA.
Trending Topics
I have a pair of patriot 799 stage 3 and used them for about 3 years now. Flow is good and at the time the price was right ( $1300 ) compared to $2600 for everyone else. Engine made 530 at flywheel on a stock (lq4) bore and full bolt ons. Now I would not buy a pair again only becouse they changed there name again and that's a turn off for me
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