Ls2 vs lq9

Hogg. 1507 posts · Joined 2006. #2 · Dec 13, 2014. Only the 2001-2007 LQ4 and 2002-2007 LQ4 or LQ9 will be a bolt in retrofit. 5.3 out, 6.0 in. You have a 99-2007 GMT 800 truck, the 207-2013 GMT-900 trucks use engines that are a tad differnt as they use GEN IV engines, your truck uses GEN 3 engines. peace.

LQ4/LQ9. The Vortec 6000 came in two specifications, with the LQ4 making 300hp to 360hp (220-268kW) and the LQ9 making 345hp (257kW). ... In part two of our LS family tree, we look at the Gen IV-series starting with the LS2. Features. Features. Phil Rillotta's 1932 Ford five-window coupe. A dyed-in-the-wool street machiner, Phil Rillotta ...LS Rod Bearings Standard Size SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96 Michigan Motorsports. $24.99) (1 review) Write a Review SKU: Ai262. Current Stock: Quantity: Decrease Quantity: Increase Quantity: ...A 6.0L iron motor will handle 1000 pretty easy, we ran an iron 6.0 for a few years back before we started using the erl stuff and it made 1500+ and was reliable,of coarse it was hard filled,dry sumped, had a girdle and was assembled by billy briggs. All with a little LS2 and 1 Turbo [email protected] at 3330lb.Buy GM Genuine Parts 19178305 LS2 and LQ9 6.0L Hypereutectic Aluminum Piston at Amazon UK. Free delivery on eligible orders.by Gina Trapani by Gina Trapani A wiki is an editable web site, where any number of pages can be added and the text of those pages edited right inside your web browser. Wiki's are ...

Our fellow tech writer and dyno-flogger Richard Holdener reports a gain of roughly 15 hp with stock 5.3-liter heads on a 6.0-liter. Our 5.7-liter head test bumped the average power by 9 hp but ...Fits. 4x LS2 style lifter trays. OE replacement part designed to hold the lifters in place. These can also be a direct replacement in the Gen-3 engine blocks (i.e. LS1, LS6, LQ9, etc.). TRAYS ARE SOLD AS A SET OF FOUR. GM LS2/LS3/LS7/L98 Lifter Tray is an OE replacement part designed to hold the lifters in place.Joined Apr 30, 2006. 9,501 Posts. #33 · Dec 19, 2010. 5.3's also have higher compression than a LQ9. If you do the stock 5.3/6.0 shortblock, then replace the rod bolts with ARP fasteners. There are boosted 5.3's with only that done putting down 500-600rwhp reliably with a good tune. My engine just ate a lifter.Sure, it would be much easier to produce the desired 500 hp with almost any run-of-the-mill 6.0L (LQ4, LQ9, LY6, etc.). In fact, all it takes is the right cam on a 6.0L, but the problem with the bigger motor is they are more expensive and harder to find. Bigger is certainly better, but so too does it require a deeper wallet.CHE 4290 LS LT Trunion Kit for Stock Rockers Bushings 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LQ9 LQ4 CHE Precision Inc. $239.99) (7 reviews) Write a Review SKU: AI155. Current Stock: Quantity: Decrease Quantity: Increase Quantity: Adding to cart… category.add_cart_announcement. Add to Wish List ...The LQ4 is a pressed pin piston setup. The weaker LQ4 rodsa nd bolts are still good beyond 450 hp. The LQ4 PCM tune is severley detuned when compared to the LQ9 tune. The LQ4's were rated at 300hp-325 hp with 360-370 lb/ft torque while the VHO, SS, Escalade LQ9 is 345 hp and 380 lb/ft torque. peace. In that respect, the LS platform has an advantage over the old-school engines; the bottom end and cylinder heads will support more power in stock form than a junkyard Gen I small or big block. In our case, the LQ9 is the high-compression version of the more common LQ4 6.0, and simply changing the cam might have shown similarly big power.

The LC9 came in GM trucks and SUVs in 2007-'11 and made 315 horsepower right out of the box. It's a Gen. 4 5.3L aluminum-block engine, so you're getting the better intake manifold, connecting rods, and ECM. The engine also had 799 or 243 casting heads which are closely related to the LS6.LQ9 LQ4 LY6 L96 LS2 6.0L 370, GM Cast Iron Block, Callies Compstar 3.622 Crankshaft, Callies Compstar 6.125 H Beam Rods with ARP 2000 Bolts, Diamond Pistons -2cc Flat Top, Fully Machined and Blue-printed. $5,299.95. Buy in monthly payments with Affirm on orders over $50. Learn more. Short Block Options.STOCK LS MANIFOLDS VS HEADERS, STOCK CAM, TRUCK CAM & BLOWER.DO HEADERS REALLY ADD POWER ON A STOCK 6.0L LS MOTOR? HOW MUCH ARE HEADERS WORTH ON A MILD CAMME...Dec 16, 2010 · Other than weight savings... is there a reason NOT to use a LQ9 iron vs LS2 alum block? (building 900rwhp turbo engine, so answer based on that info). If you're only going to 900rwhp then the lighter AL motor would be my choice.

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Precision Race Components Customer-Supplied 4.8L/5.3L/LS1/LS2/LS6 Cylinder Heads Fully CNC Ported & Assembled With Choice of Your Stock or Stainless Steel 2.02" Intake Valves, 1.575" Exhaust Valves, & Optional TSP Dual Valve Spring Kit with PAC Valve Springs & Titanium Retainers. Kit Also Includes TSP Hardened Pushrods & Your Choice Of Camshaft!Here's a quick rundown of the key internal features: The LQ4 has durable cast-iron block and duralumin forged pistons. The LY6 features increased compression ratios and flat-top pistons. LY6 cylinder heads promote superior airflow. In essence, each engine caters to different priorities.6 Sept 2022 ... Tutorial and advice on installing an LS series double roller timing chain. This provides an extra protective feature on LS series motors by ...LM7 vs. LS1 vs LS2 vs. LQ9 vs. L33 vs. LS7 vs. LS9 vs. LSA dyno test on 5.3L V-8 engine.

Fits 1997-2013 Gen 3/4 LS-Based Engines 5.7 6.0 LS1 LS6 LS2 LQ4 LQ9. Specs: 238/242 .600"/.600" 112LSA, 3 Bolt Pattern. The Magic Stick lineup is Texas Speed's most popular line of camshafts. The Magic Stick 3 is designed to be a max effort camshaft for people looking to get the maximum power possible from stock displacement engines using nitrous. PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. All PSI Harnesses are Made in the USA. Android: For most users, the Google Play Store is the best way to find apps and keep them updated. If you’re using a non-Google ROM or downloading apps from outside the store, APKU...Oct 26, 2017 · To ensure you’re using the the right parts, you need to know which LS engine you’re starting with. There are two easy ways: 1. The 8th digit of the VIN. 2. By visual inspection. The easiest way to tell the difference is to check the 8th digit of the Vehicle Identification Number (VIN) on the original vehicle. (See below.) LQ9 LQ4 LY6 L96 LS2 6.0L 408, GM Cast Iron Block, Callies Compstar 4.000 Crankshaft, Callies Compstar 6.125 H Beam Rods with ARP 2000 Bolts, LS2K Diamond Pitons -15cc Dish, Fully Machined and Blue-printed. $5,599.95. Short Block Options. Compstar Extreme Duty Rods + $225.00.In a high-mileage 6.0-liter LQ4, the cam helped put down an additional 125 hp with nothing more than a set of long-tube headers and a tune. The cam alone retails for $399, but you'll need a set ...See All 18 Photos. After installation of the TrackMax cam, the power output of the 6.0L LY6 jumped from 443 hp and 467 lb-ft of torque to 514 hp at 5,900 rpm and 493 lb-ft of torque at 4,600 rpm ...Engine codes for these motors look like this; LM7, LM4, L59, LQ9, and so on. LS engines can have an aluminum or an iron block. LS engines are ALL considered small blocks. Though some have a big-block displacement, like the LSX 454 crate engine (Exception being the 8.1 Vortec which is a big block). There are two very different generations of the ...The traditional five-bolt pentagonal cylinder head pattern was replaced with a square four-bolt design (much like the 1964-1990 Oldsmobile V8), and the pistons are of the flat-topped variety (in the LS1, LS2, LS3, LS6, LS7, LQ9, and L33), while all other variants, including the new LS9 and LQ4 truck engine, received a dished version of the GM ...The very last VF Series 2 V8s switched to the 6.2-litre LS3 engine (previously restricted to HSV models) with 304kW and 570Nm of torque. With a bi-model exhaust and close attention to detail, these LS3-powered Commodores have become very collectible. The last of the Commodore SS' were powered by a 6.2-litre LS3 V8.After installation of the TrackMax cam, the power output of the 6.0L LY6 jumped from 443 hp and 467 lb-ft of torque to 514 hp at 5,900 rpm and 493 lb-ft of torque at 4,600 rpm. Gandrud Chevrolet ...

Description. BTR CAMSHAFT - LS1/LS2 - N/A STAGE 4 - 33348123R0. Specs: 233/248 .630"/.615" 111.5+2.5. INTAKE LOBE LIFT @ TDC: 0.06269. The largest offering in our naturally aspirated LS1/LS2/LS6 lineup, the Stage 4 has proven it's worth time and time again. The Stage 4 sacrifices a some low rpm torque while on a mission to make max peak power.

Here are a few parts commonly used for an L94 cam swap: LS2 timing chain, LS7 spec lifters, LS2 timing chain damper, ... (5.500 in. vs. 5.430 in. on average). When running a stroker crank, much of the piston skirt drops out of the bottom of the cylinder at BDC. The best piston manufacturers have compensated for this by eliminating skirt taper ...The 241 castings feature 205cc intake ports, 70cc exhaust ports, and a 2.0/1.55 valve combination. The hot factory heads would be the LS6 (243 castings), but even the stock LS1 heads can be made ...Now on LS2 truck from Rick.. AEM V1 ls2 coil seting is not correct. AEM V2 has truck coils... Spent the last week getting the Set Dwell Ect. up for LS2 truck coils. Had to go outside the Supra World But the info can be found. LS2 non truck have too much voltage and not enought dwell. LS 2 Truck coils have been tested up 9500RPM at 5ms.The most popular upgrade is to replace the stock 317 cathedral-port heads on a 6.0 truck (LQ4 or LQ9) or LS2 (243 castings) with the rectangular-port LS3 heads. The large valves in the LS3 heads require the 4.0-inch bore of the 6.0 (and do not work on smaller 4.8, 5.3, or 5.7 blocks), but the results are impressive. ...Rocket Lab has scored a new deal with an unnamed mega constellation customer for reaction wheels, a key spacecraft component. Rocket Lab has proven that it’s much more than a launc...corvette c6 , ls2 , a6 , full bolt on + camshaftcamaro f body , lq9 , a3 , full bolt on + pulley + camshaft rolling 80 km/hYes an no they are the same bore and stroke but have some difference. Namely the pistons and compression ratio. The LQ4 has dished pistons and runs lower CR. Also the rods are not as good in the LQ4 either. Also the LS2 has 243 heads with higher CR. The LQ4 comes with 317 heads and a truck intake.The LQ9 is a GEN III based engine, easily interchangable with LS1 cars and still interchangeable with LS2's with a few tweeks. LS2's have a different reluctor, and the cam sensor is on the timing cover. To retrofit an LQ9 into an LS2 car you'll need to swap over your valley cover, timing cover, cam gear, and reluctor wheel.

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LM7 vs. LS1 vs LS2 vs. LQ9 vs. L33 vs. LS7 vs. LS9 vs. LSA dyno test on 5.3L V-8 engine. www.motortrend.com So just read this article from last year.LQ4/LQ9 are basically the same with the 9 having a little more compression, and both are 6.0L which most are looking for and drives up the costs some. 5.3L motors are more plentiful which helps with the costs some. 68 Camaro~LSx ~all motor .....1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53. Like.The Indian market was anyway oversold, analysts said Indian equities are rejoicing a sweeping victory for prime minister Narendra Modi’s Bharatiya Janata Party (BJP) in the country...The 243 heads came on the powerful LS6 engines from 2001 to 2006. Although the heads were initially made for C5 Corvettes, they later found their use in engines like the truck-spec LQ9 and LQ4. The LQ4 and LQ9 had 6 cc larger combustion chambers. LS6 was also used in some Camaros and Pontiac GTOs. The 243 heads are cast out of aluminum alloy ...It’ll break down each of the LS engine’s most popular displacements, starting with the many varieties of the venerable 6.0L LS. (Spoiler alert: there’s way more than just one 6.0L LS engine.) Learn more about each LS engine displacement: * 4.8L LS Engine Guide: Block Specs, Swap Resources & Build Info. * 5.3L LS Engine Guide: Block Specs ...Liposuction is the removal of excess body fat by suction using special surgical equipment. A plastic surgeon typically does the surgery. Liposuction is the removal of excess body f...360 posts · Joined 2009. #4 · Mar 5, 2011. I just weighted some the other day in the shop. LS2 aluminum block was 91lbs. Iron 6.0 block was 192lbs. 1995 C1500, 325" twin PTE 6870s, 4300lbs. 5.7 @ 123mph at 28psi. DBRods Speed & Chassis. Save Share.Here are a few parts commonly used for an L94 cam swap: LS2 timing chain, LS7 spec lifters, LS2 timing chain damper, ... (5.500 in. vs. 5.430 in. on average). When running a stroker crank, much of the piston skirt drops out of the bottom of the cylinder at BDC. The best piston manufacturers have compensated for this by eliminating skirt taper ...You are not logged in or you do not have permission to access this page. This could be due to one of several reasons:Both are in good shape and should not need to be completely rebuilt. LQ9 has 135k miles on it. Already have 243 heads for it and TBSS intake. LS1 had 90k and came from a 99 Camaro. I assume it is stock. Budget is around $2,000-$2,500 for build parts.One of the most popular crate engines available today, the LS364/450 is the crate engine version of the 6.0L LQ9. However, unlike an original LQ9 (also known as the Vortec HO 6000 or the VortecMAX), the LS364/450 has several upgrades: Upgraded cylinder heads; High lift camshaft (LS6 cam like this one) Slightly higher compression ratio (10.3 vs ...Gen III ranges from 1997-2008 and includes the 5.7L LS1, truck-based 6.0L LQ9 and a host of other engines that mean nothing in Australia. Gen IV ranges from 2007-2017 and brought us the 6.0L LS2 and 6.2L LS3, as well as the supercharged 6.2L LSA and about 20 other versions you’ll never see here. And 2014+ brought us the Gen V that … ….

Fits 1999-2013 LS-Based Engines LS2 LQ4 LQ9 408. These 100% USA-cast and machined Precision Race Components cylinder heads feature 237cc fully CNC Ported intake runners. Designed for 4.000"+ bore engines with cathedral port intake manifolds. Extra-thick deck surfaces help alleviate head gasket sealing issues in power-adder applications.The only difference between the LQ4 and the LQ9 is compression ratio (9.4 vs 10.4 IIRC) due to the flat top pistons in the LQ9. Save Share. Like. Bo185. 5254 posts ... (243/799) and need an intake look at the TBSS LS2 truck intake or the Gen IV 4.8/5.3L intake it has a larger plenum and TB. There are lots of head options now!!! bushauler said:May 3, 2009 · The LQ9 is ussually found in the High end caddy SUV, SS Truck, and the VHO optioned crew cabs Now in the first designLQ9 piston I believe they used a standard LS1 rod with a pressed pin. They Later (04 LQ9) switched to the beffier LS2 rod with a Floating pin flat top piston. Yes the LQ9 piston Is the same flat top piston used in the LS2. One of the most important steps of your swap is to identify the "spacing" needed. This "spacing" is determined by the crank pulley that you have, or will be getting. Here at ICT Billet we design our brackets based off these three spacing principles. (-1) Corvette/CTS-V/SS (sedan)/G8's crank pulleys are in this category.A rubbing alcohol spray is effective against a number of plant pests. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radio Show Latest View All ...CNC LS 408 Short Block, Callies Crank, 9.5:1 Wiseco Pistons. $5,699.95. Add to Cart. LQ9 LQ4 LY6 L96 LS2 6.0L 408, GM Cast Iron Block, Callies Compstar 4.000 Crankshaft, Callies Compstar 6.125 H Beam Rods with ARP 2000 Bolts, Wiseco Pistons -20cc Dish, Fully Machined, Blue-printed and Assembled. Learn More.Oct 19, 2005 · 699. Location:Willoughby, OH. Owns:SS. Color:Arrival Blue. Year:2003. Drivetrain:AWD. Posted October 20, 2005. Correct me if I'm wrong but I think the LQ9 has a steel block and the LS2 is an all aluminum engine. The fact that the LS2 heads, Stage II cam, and stock LS2 bottom end cranked out 502.3 hp and 465.3 lb-ft of torque still warms our hearts. The LS2 is an amazingly efficient small-block V-8 that is ... Ls2 vs lq9, Run on the dyno first with the factory LQ4 cam, the 6.2L L92 produced peak numbers of 445 hp at 5,600 rpm and 459 ft.-lbs. of torque at 4,600 rpm. (Image/Richard Holdener) The Summit Pro LS Stage 4 (SUM-8711) cam offered a .625/.605 lift split, a 234/247-degree duration split and 113+3.5 LSA. (Image/Richard Holdener), The LS2 is the aluminum block 6L motor. The LQ9 (or LQ4) is the iron block version. The LS1 is 5.7 liters and is also aluminum. Then there is a 5.3L truck motor as well. Intakes, front drive accessories, oil pans are different, and I'm sure the camshafts are different as well., Including 89017479 - LS2, LQ9 Standard Bore Piston +.020. Orders may take longer than usual to process due to manufacturers having issues receiving and shipping parts. If you need to know if a part is in stock, please call prior to placing your order., The TBSS intake improved the power output from 4,500-7,000 rpm. As expected, the big winner in our truck trio was the FAST LSXRT intake and FAST 102mm throttle body, which produced 492 hp at 7,100 ..., You will have to build the T56. (I'm assuming that you're going with the T56) A stock T56 will only hold 450-550 ft lbs. depending on which one you use. As far as the LQ9 versus the LS1/LS6 or an LS2 I would go for the LS1 style aluminum block. I've seen 700hp twin turbo LS1 sand rails that hold up just fine., Mar 30, 2010 · I would be interested in a big block if I can get 600hp and 20mpg Hwy, with a motor that can spin to 6,500 while being happy at 1,800rpm on the hwy in 6th gear using efi and a hydraulic roller for the same amount of money as a LS build. Lamar. 93 Corvette Polo Green ZF6 13.4@105 Koni SA, GS Brakes Gone. , Choosing the Best Laptops for College Students in 2020. Collapse All; Expand All. University of California. Location. Updated May 23, 2023 thebestschools.org is an advertising-supp..., You only need to compare the engine with something like the quad-cam Ford Coyote engine to see this first-hand. What the LS gives up in outright efficiency, it makes up for in capacity, and, if you are looking …, Much like that very realistic scenario, Chevy's L76 and L77 engines are actually LS engines. And though the majority of people might call them Vortec engines, GM's small-block 4.8L, 5.3L, 6.0L, and 6.2L truck engines from 1997 through Gen IV are still very much members of the LS engine family. The LS1 was the first mill from GM's Gen III ..., Michigan Motorsports LS1 Rocker Arms and Bolts with Trunion Kit Installed FITS LS2 LS6 LQ4 LQ9 LM7 4.8 5.3 5.7 6.0. $199.99 $ 199. 99. In Stock. Ships from and sold by Michigan Motorsports. + Camshaft Retainer Plate Gasket Compatible with LS Series Engines, &Bolt Kit ARP 134-1003 Gen III IV V for GM LS1 LS2 LS3 4.8 5.3L 6.0L 6.2L Vortec ..., 153 posts · Joined 2004. #9 · Apr 25, 2005. The LS2's got more compression than the LQ9. The LQ9's got more compression than the LQ4. And there goes the Challenger, being chased by the blue, blue meanies on wheels. The vicious traffic squad cars are after our lone driver, the last American hero, the electric centaur, the, the demi-god, the ..., When it comes to water pumps for LS3, LS7, LS9 and LSA swaps with -1 offsets, the main differences lie in the water outlet location and pulley depth. Water pumps for these engines house the water outlet on the upper driver's side rather than the passenger side like the LS1 and LS2 pumps. If you're working on an LS swap project and need to ..., "It not only makes sense but it just feels like the right thing to do." Hank Azaria is finally ready to do something about the problem with Apu. Weeks after The Simpsons aired a co..., The LS6 cam seems to be a favorite among enthusiasts, with higher lift and duration on the exhaust side when in comparison to the LS2 or LS3 cams. For larger displacement engines, such as the iron 6.0L LQ9 truck engine, the LS7 cam is often the appropriate choice to make the most out of that engine’s larger displacement., and a newer ls2 style floating piston and beefier gen4 style rod on the right (click to enlarge) also note, these newer 5.3 pistons you can sometimes get in FLAT TOP wich will increase compression ratio also (dished gen3 piston on the top, flat top gen4 piston on the bottom), SeniorsMobility provides the best information to seniors on how they can stay active, fit, and healthy. We provide resources such as exercises for seniors, where to get mobility ai..., Feb 6, 2015 · Spotter’s Guide to Identifying Factory LS Intake Manifolds. With some 40 GM part numbers covering the list of intake manifolds for more than 25 variations of the Gen III and Gen IV LS engine family, identifying a swap meet intake or planning a manifold swap can get a little confusing. This handy spotter’s guide to LS intake manifolds should ... , ok, comp cam ask if my cam was a single bolt or three bolt. It refers to the ones at the end of the cam. They have one that has just a center bolt and a offset tab that inserts into the gear. But I will stick with the three bolt then. The reason they asked you that is because all the GEN IV engines and newer use a "single bolt" camshaft., Factory LS Camshaft Comparison: LM7 vs. LS1 vs. LS2 vs. LQ9 vs. L33 vs. LS7 vs. LS9 vs. LSA. Dyno test of horsepower and torque of different factory LS camshafts in a 5.3L V-8...., If TikTok continues to operate in Hong Kong, it would be in a much trickier position than foreign tech firms. TikTok, owned by Chinese social media giant ByteDance, announced that ..., LM7 vs. LS1 vs LS2 vs. LQ9 vs. L33 vs. LS7 vs. LS9 vs. LSA dyno test on 5.3L V-8 engine. www.motortrend.com So just read this article from last year. It gives great specs on the various cams But it basically doesn't spell out any real world experience for type of vehicle. Or purpose., The only difference between the LQ4 and the LQ9 is compression ratio (9.4 vs 10.4 IIRC) due to the flat top pistons in the LQ9. Save Share. Like. Bo185. 5254 posts ... (243/799) and need an intake look at the TBSS LS2 truck intake or the Gen IV 4.8/5.3L intake it has a larger plenum and TB. There are lots of head options now!!! bushauler said:, An LS2 build is quite popular due to the availability of these 6.0 LS engines. It’s aluminum block is strong, yet lighter than cast iron Gen III and IV offerings. You’ll find the LS2 both in cars (8th digit of the VIN will be a U) and trucks (8th digit of the VIN will be a H). The LY6 makes for a great 6.0 LS build starting point as well., Yes an no they are the same bore and stroke but have some difference. Namely the pistons and compression ratio. The LQ4 has dished pistons and runs lower CR. Also the rods are not as good in the LQ4 either. Also the LS2 has 243 heads with higher CR. The LQ4 comes with 317 heads and a truck intake., '99-04 Silverado, Suburban, Yukon, and Hummer H2 (LQ4); '02-06 Escalade, '03-07 Silverado SS and Sierra (LQ9) GMPP PN (LQ9): 19156262, Dec 16, 2010 · Other than weight savings... is there a reason NOT to use a LQ9 iron vs LS2 alum block? (building 900rwhp turbo engine, so answer based on that info). If you're only going to 900rwhp then the lighter AL motor would be my choice. , Patriot Performance LS6/LS2 and LQ9, Stage II. At a very reasonable price, the Stage II CNC porting increases flow by 65 cfm on OEM castings. The LS6/LS2 casting is best suited for higher-compression, naturally aspirated engines and 75- to 150-hp shots of nitrous. The larger chambers on the LQ9 casting make it better suited for mild-boost ..., LM7 vs. LS1 vs LS2 vs. LQ9 vs. L33 vs. LS7 vs. LS9 vs. LSA dyno test on 5.3L V-8 engine., The difference In power comes from the added compression and the factory programing. The LQ9 is tuned for more performance with the bump in compression. Factory camshaft part numbers The 99-00 LQ4 6.0L used the 12560967 - this is also used in the 5.3L The 01-up LQ4 6.0L used the 12561721 The 02-up LQ9 6.0L also used the 12561721, We offer 370, 408, and 421 CID LQ9 packages with power ranging from 520 HP all the way up to 625 HP. All of our turn-key crate engines include a custom engine harness and ECM that can be built to run your electronic transmission for no additional charge! They also include a one year, unlimited mileage warranty. Give us a call today to get a ..., Jun 22, 2021 · The most popular upgrade is to replace the stock 317 cathedral-port heads on a 6.0 truck (LQ4 or LQ9) or LS2 (243 castings) with the rectangular-port LS3 heads. The large valves in the LS3 heads require the 4.0-inch bore of the 6.0 (and do not work on smaller 4.8, 5.3, or 5.7 blocks), but the results are impressive. , Yeah, an LS2 or LS3 would be very cool. LS3 with the 6L80 trans would be a nice goal. Curious that that guy said the LS2 was sold. Apparently you can get away with 87 octane with that LQ9 with reduced performance (and possibly some knocking), but GM wants you to use 91+. That 10:1 compression..., RPO L99 and LS3 cylinder heads are aluminum with 68cc combustion chambers, rectangle intake ports with 257cc runners, D-port exhaust with 87cc runners, 2.165˝ intake valves and 1.590˝ exhaust valves. These heads can be CNC-ported to improve on flow and milled for higher compression. These heads are almost the same, but the L99 heads used a ...