i have a 3 which is a alum block lc9 with 799 heads, You think it is possible you could send a picture of motor and transmission my vin number 8th character is a number 3 as well, I have a Chevy Silverado 2011 z71 44 1500 extended cab Lt vin 8th character number 3 its supposed to be a Lc9 with the 799 heads for motor and the 6 speed transmission I believe someone has swapped out my motor and transmission with something else on the front of the motor its got vo4 right behind the water pump what does this mean if could get You can check out 799 heads on eBay. The main reason for going with a stroker forged crank is for the added cubic inches. The intake is the factory Gen IV truck manifold and will be run using a stock computer and HP Tuner software. The size of the valves affects the performance of an engine. They should have 64cc chambers. have a cathedral-shaped intake port. Osuagwu Solomon is a certified mechanic with over a decade of experience in the mechanic garage, and he has over five years of experience in the writing industry. On the left is a Gen IV, on the right is the Gen III. You can find moreLS engine spec guides and LS-relatedinformationhere. Furthermore, this combination also ensures that the engine runs more efficiently than before while still remaining within emissions standards. The 799 heads have a smaller combustion chamber of 64cc, which significantly increases the compression ratio. You need the main info about your engine components to get the right numbers. For many people, selecting suitable cylinder heads can be pretty tricky. Your email address will not be published. Thanksfinally getting around to this but switched gearslooking at an L33 with stock mild cam with LS6 heads and intake-stand alone harness for my 67 impala.trying to figure out if this is a good fit for the 67 with 4l60e trans? I HAVE A 2011 SUBURBAN LT Z71 4X4 AND IT HAS THE LC9 WITH 799 HEADS. Still can drive daily. 799 cylinder heads have a compression ratio of 9.5:1. im looking into getting 600whp will the stock heads get me this with a 80mm turbo? With these results it's clear that if you're after maximum performance then investing in some 799 head will give you more bang for your buck! Why Is My Car Accelerating on Its Own? However, if you're planning to drive in hot weather or at high altitudes, you'll need an engine that can handle harsh conditions. 799 heads users can verify the valve seating of the cylinder heads by engaging vacuum and pressure testing. The first thing you'll want to consider is the engine displacement, also known as cc. Mechanically similar,General Motors LS and LS-based Vortec engineswound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buickheck, even Saab, Hummer, and Isuzu got some LS love. That will determin what pushrod to go with. The 243 and 799 numbers reveal the original molds out of which these castings were constructed. The 243-cylinder head is made from lightweight aluminum, which helps reduce overall weight without sacrificing power or performance. The #799 cylinder heads are reportedly the same casting as the LS6 and LS2 #243 heads, minus hollow exhaust valves and high-performance valve springs. Bore 1/5 = 2.346 in. What made the 317 heads both kissed and cursed was the combustion chamber size. The799 LS headshave a cathedral-shaped intake port. Ask your tuner what injectors they prefer and have them ready to save yourself an extra trip to the dyno. This means that it has plenty of power to tackle any job you can throw at it, whether youre commuting on the highway or taking your truck off-roading for some fun in the mud. Remember, a 4-corner steam kit reduces hot spots that cause the rings to butt and snap the pistons ring lands. While large combustion chamber reduces the compression ratio, smaller combustion chamber produces more power due to increased compression ratio. Since inception, the 799 heads have offered superior performance and efficiency on the 4.8 and 5.3-liter truck engines. The LS engines with 799 heads are 5.3L and 4.8L. The decks are thicker to withstand more boost. However you seem to state that it was available until the 2011 model. The peak flow numbers differed by just 7 cfm at 0.700 lift. In terms of cylinder heads, we included the 706 small-valve 5.3L heads, the 241 (LS1), 317 (6.0L truck), and 799 (as a stand-in for the hallowed 243) heads. looking for reliability with a little get up. Not really an expert, Your email address will not be published. For example, if you only drive on the weekends, you can probably get away with a less powerful engine. Keep the above-mentioned points in mind when choosing the right cylinder heads. wall tool-steel pins is a good idea. Simply put, the Gen III is easy to swap and cheap, and the Gen IV has better heads and more complexity. LS engine spec guides and LS-relatedinformationhere. what LS heads to use on my 5.3 | Chevy Nova Forum The 4.8L has a 3.27-inch stroke, and the 5.3L has a 3.62-inch stroke. The best way to be sure is to use this spotters guide and look carefully at the block and heads. On the EcoTec3, the timing chain, water pump, and heads are all very different. oversize forged pistons. Given the minimal difference in flow and lack of power production, the 241s don't seem like much of an upgrade over the 706 heads. Despite larger exhaust port volumes than either the 706 or 241, the 799 heads offered the least exhaust flow of the bunch, with a peak of just 191 cfm. It proves beyond doubt that Capizzi has what it takes to compete at even higher levels and be successful in any challenge or race he enters into! In 2014, the L83, the LT version of the 5.3L, appeared with direct injection, taking the engine in a totally different direction. Not surprisingly, the 799 heads flowed the most, with an impressive peak flow of 250.2 cfm when tested at 0.700-inch lift - that's over 13 cfm higher than their nearest competitor! If you are looking for a daily driver cam, the Summit Racing Pro LS SUM-8712 stage 1 is a great onelots of power and a slightly noticeable lope and uses stock springs.
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