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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. Bore w/59 cc combustion chambers 3166p parts at jegs. 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 Shop now at the guaranteed lowest price! 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. Flowing promaxx ls3 large bore, small bore, and 245cc cathedral port heads.edit When i said small bore i meant 3.898bore which is 5.7 It is not for the 5.3.
Billet ls3 oem rocker stand for use with standard or 6 bolt pattern large spring pockets utilizes 2.08 intake valve and 1.60 exhaust valve (larger sizes available upon request) multiple spring options assemblies include
Get the best performance with promaxx performance xxtreme assembled 260 cc rectangle port cylinder heads for ls3 w/4 in Bore w/63 cc combustion chambers 3163 parts at jegs. Ls3 style 11 degree chevrolet heads to fit gen iii ls1/2/6 3.90' bore engines 248cc intake runners, 69cc combustion chambers
Each pair comes with a detailed flow sheet Sold bare and ready for assembly Does any one have experience with either the liberty or promaxx ls3 heads I see their both 11 degree and the liberty says 255cc vs the promaxx says 260cc.
Promaxx 3165 xxtreme 260 ls3 rectangle large bore 59cc bare heads fits vehicle
This head is for large bore power Dyno results produce 700 hp plus on pump gas Crazy part was the deck had more meat than my factory ls3 heads Me personally i don't care who made what, if it works.yes i'd like to do a cid head but i learned way more dealing with a pro comp casting and how a ls7 head works with a 4.030 bore.
Performance cylinder heads project x series ls xxtreme series maxx series series one Get the best performance with promaxx performance xxtreme bare 260 cc rectangle port cylinder heads for ls3 w/4 in Bore w/59 cc combustion chambers 3165 parts at jegs. Size for size, no one can touch this bad boy
If you have a 4.00 inch plus bore size engine and need cathedral heads, look no further to push your power to the xxtreme
Requires 4 bore minimum and ls3 intake rocker. Take thatbfor what it's worth Say an engine that's not in heads up class or going for ever hundredth, and looking for 1000 or less hp, they there a very good and respectable option imo Both flotek and promaxx can make big power as well
From chads site 505 bbc Bore w/63 cc combustion chambers 3161a parts at jegs
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