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Promaxx performance products specializes in all types of automotive cylinder head for any budget, carrying performance cylinder heads, diesel cylinder heads and stock replacement cylinder heads. We have strengthened many areas and made many power and flow improvements for. This combined with our 5 angle competition valve job, diamond honed bronze guides, hand bowl blending and assembly by our professional builders right here in the u.s.a produces out of box performance that out performs the top brands in the industry
Promaxx performance continues to evolve with the project x lineup and has raised the bar on the competition An aluminum version of what has always been a cast iron cylinder head There is no as cast head on the market that can outflow these heads period!
About promaxx performance we are a family owned business that began in 2012 by purchasing the remnants of patriot performance and alabama cylinder head exchange
We specialize in all types of cylinder heads, from diesel to performance Our performance line has become a passion. Unlike most of our competitors, we don’t offer different quality cnc designs At promaxx, we provide our elite series at prices that make our competition cringe
Going fast doesn’t have to break the bank, so get a pair of shocker cnc series heads today Now go out and shock the competition! The shocker cnc 340cc bbc is a professional designed cylinder head using the latest cnc porting tools These heads out flow the competition at a price that cannot be touched
Some comparable heads are double the cost of one shocker 340 cnc
Flowing over 415 cfm, this head is on top of the heap Now go out and shock the competition. Our products are not manufactured, endorsed or sponsored by ford, gm, cummins, chrysler, jeep, mazda, toyota, isuzu or volkswagen Our use of the terms “ford” “gm” cummins “chrysler” jeep “mazda” “toyota” “isuzu” and “volkswagen,” and associated logos, are for descriptive purposes only.
The maxx 290 is truly a rare breed in today’s market An as cast head that is just as efficient as competition’s cnc ported pieces Independent flow bench testing shows over 400 cfm with 2.300 valves This head will change the industry
Compare to any brand, this head makes power!
The maxx 225cc sbc head is our largest as cast head in our line up, flowing close to 300 cfm @.700 lift This head will support big power at a price that can't be beat. The sbf maxx 180 is an as cast head that beats the competition Don’t let the size fool you, flowing over 260 cfm, this head makes real power
It puts out up to 20 hp over the competition. The xxtreme series is our newest line performance cylinder head It features professionally designed runners and chambers meticulously designed in the u.s.a At promaxx, we provide our xxtreme series at prices that make our competition cringe
Going fast doesn’t have to break the bank, so get a pair of xxtreme series heads today
Take your performance to the xxtreme! The 185 vortec has taken the vortec head to the next level Bigger runner and bigger valves mean more power Just ask dirt track racer shawn guffey, who has won every race and back to back track championships since installing vortec heads on his a hobby ride.
Shop exhaust systems, fuel tanks, air intakes, and more at prosource diesel! Promaxx performance products the porting of performance cylinder heads has long been an essential part of attaining maximum horsepower Promaxx performance began business by revolutionizing the cnc cylinder head market They specialize in cylinder heads for small block chevy, big block chevy, and small block ford.
Jeep 4.7l #801 left full (vls & sprgs) $ 688.00
Dx diesel xtreme is our newest heads on the market It is taking the diesel market to places it has never been before
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