lq9 compression test|lq9 cubic inches : online sales The LQ9 - basically an LQ4 with different pistons to increase compression and deliver about 10 more HP and TQ - has a static compression ratio very similar to yours; so .
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The lq4 has dish pistons that give it a 9.4 compression and lq9 has flat top piston which give it a 10.1 compression. The HP difference is 25 more HP ONLY. Cheaper to just put .
It cranked out 345 horsepower, had 10.1:1 compression, and had other nice .
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If I had an LS1 with heads x and cam x (including all valvetrain components) and swap them over to an LQ9 (6.0L) would compression ratio and piston - valve clearance . With a stock .060 gasket and 66cc milled L92's compression is 10.77:1. I believe the compressed thickness on the stock LS2 gasket is .055. LS7 gasket is .060. The same .
I guess there was something to the theory of lifter leak down and higher dynamic compression as the compression is now down to what is expected. I made a leak down . The LQ9 - basically an LQ4 with different pistons to increase compression and deliver about 10 more HP and TQ - has a static compression ratio very similar to yours; so . It cranked out 345 horsepower, had 10.1:1 compression, and had other nice features like full-floating pistons. . To chart the changes in the LQ4 or LQ9 over the years, check out these articles: LQ4 Engine Specs: .
This engine was introduced in other truck lines as VortecMAX for 2006. It features high-compression (10:1) flat-top pistons for an extra 10 hp (7.5 kW) and 10 ft
Compression Ratio: The LQ9 has a higher 10.1:1 compression ratio compared to the LQ4’s 9.4:1, and believe me, that bump in compression makes a difference in . The wallace racing calculator shows the following info with a 72 cc stock 317 head and 0.051" thick factory head gasket with 4.045" bore diameter. It gives a 9.5:1 CR like factory .
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 . Here is a common question among LS engine enthusiasts: My buddy, Joe, just bought a new cam for his 6.0L and wants to get rid of his factory LQ9 cam. To start the build I decided to buy a used good running 2004 LQ9 6.0L from a wrecked Cadillac Escalade, I test started it on the engine stand with a hacked together wiring harness and it ran good. . With the 68cc combustion .
What does this mean? It means on an LS2, you need to mill the heads .030", and run a .055" gasket to keep 10.9:1 compression. the stock LS2 heads are 65cc, and the stock gasket is .060" (im pretty sure on that gasket, but someone correct me if im off). With a stock .060 gasket and 66cc milled L92's compression is 10.77:1. Comp's fourth most popular cam, the 277LR HR-113, idled at only 10.75 inches in our 6.0L test engine. With the stock GM LQ9 truck short-block and stock cast pistons with shallow valve reliefs .LQ9 6.0 SBE 821 LS3 heads Stock LS3 intake/inj w/ 92mm TB.575/.575 220/224 112 LSA cam 1-7/8" headers w/ 3" mandrel exhaust 3.54 gear 25.7" tire . For Maxing out compression and cam spec's Maximize all the above for the best potential not .
Hello fellow engine builders, I completed my first bare-block engine build a couple months ago. It’s an LQ9 block from a running Escalade, Gen 4 6.0 rods and pistons, gapped rings for boost (0.028” top and 0.026” 2nd iirc, maybe flipped), stage 2 turbo cam (Elgin e1840p), stock crank, used reproduction 823 cylinders heads (LS3 heads), ARP studs, LS9 gaskets, re-used valves, .Of course, as an upgraded version of its LQ4 counterpart, the LQ9 was designed with superior compression ratio, horsepower, and torque output, respectively. The LQ9 was famously referred to as “VortecMax or Vortec HO 6000.” The engine had the VIN 8th digit code – “N” on it as a major mark of variation from the old LQ4. First I am trying to raise the compression to the max I can run on 93 octane. And this leads to my other questions. . 421 CI LQ9, Tick Performance Custom Cam, TFS 255cc LS3 heads, Kooks 2" LT headers, Kooks 3" True Duals w/ high flow cats, FTP 104 lid, Speed Density Tune, 4" silicon tube, LS6 VCT, FAST 102 Intake, NW 102 TB, Oil Catch Can . To prep for our test, the loaner L92 required a few changes, namely removal of the VVT and DBW throttle body. The Holley HP management system did not allow us to run the variable cam timing so it was replaced by a fixed LQ4 cam. Likewise, the DBW throttle body was ditched in favor of a manual 92-mm FAST throttle body.
What we had planned to test was a set of stock 4.8-liter/5.3-liter heads (casting numbers 706, 852, or 895) that offer a tiny 61cc chamber. Our Compression Lessons chart illustrates how the . C3 Tech/Performance - LS build - LQ9 reliability and slight performance bump - I decided to call it quits on my Smeding 383 build, and am switching to an LS build, mainly because I got a deal on a reman LQ9 6.0 long block. So I have some questions in regards to LS build for reliability. The reman is pure factory spec,. LQ9 compression question. . Also this is the reason we do a piston to valve clearance test with the putty. You can never assume that two different motors are going to have the same clearances. Also you compression ratio probably increased because of the bigger bore of the LQ9, and also because the piston has a different deck height, that .
lq9 with 799 heads compression
LQ9 build cam suggestions LQ9 build cam suggestions. By SYRacing October 15, 2012 in Engine Tech And Modification. Share More sharing options. Followers 0. Reply to this topic; . the 243 heads are supposed to have a quench pad in the design and offer better compression. The info i have lists the 243 heads at 65 cc so with the stock gasket .
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 LQ9 408 Stroker Budget Build - Finance-Friendly 408. With Smart Parts Choices And A Little Elbow Grease, Putting Together An LS Stroker Can Be Easy On The Wallet--And Result In Dynamite Dyno Numbers EMAIL ME: [email protected] ME ON INSTAGRAM: .LQ9 has flat-top pistons, while LQ4 has dished pistons. The LQ9 also has a higher compression ratio than its counterpart; thus, more power. In short, the LQ9 is a high-output version of the LQ4. LQ9 Engines Vehicles. The LQ9 .
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 . The foundation of any stroker build is the rotating assembly, which consists of the crankshaft, connecting rods, and pistons.. For this build, we opt for a 4.00-inch stroke crankshaft to reach the 408 cubic inches. We pair it with long-lasting connecting rods and pistons that provide a compression ratio suitable for either naturally aspirated or power-adder applications. Went ahead and compression tested my motor today. I have no idea if numbers are good or bad I have researched and eveything leads to 180-200 which is not at all what numbers I came out with ran test 2 times. I had a difference in . The LQ9 achieves its factory-listed 345 hp and 380 lb-ft of torque by incorporating flat-top pistons to create a 10:1 compression ratio, compared to the 9.4:1-compression LQ4’s 300-325 hp and .
The implication of this is that the LQ9 has a higher horsepower, and responds better to upgrades like high-flow cylinder heads, turbos, superchargers, nitrous oxide, and intake systems. The increased compression in the LQ9 helps it output 30 more horsepower. However, a higher compression does not mean the LQ4 with lower compression is easily . The LQ9 has 10.1 compression and the LQ4 has 9.41:1 compression stock. The LQ4, generally speaking, is a cheaper engine. There is a benefit to owning a LQ4 over the LQ9. This being if you want to go with some sort of forced induction, such as a turbocharger or a supercharger. On forced induction applications, you want to go with the lowest . The compression for a 6.0 Chevy engine can vary, but there are some general guidelines to consider. The 6.0-liter engine, which was introduced into Chevy pickups in 2001, had a compression ratio of 9.4:1. When conducting a compression test on the engine, it’s important to consider the spread of the compression values across the cylinders. Dart 225 heads fully worked by PMFL, FTI StreetSweeper cam 236/240 .610 .610 w\ full cam kit, Edelbrock Vic Jr manifold with custom elbow, 48lb injectors, Custom CAI with raim air scoop,Kooks 1 7/8 longtubes catless with custom H .
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LQ4 Cam vs Comp Cam. Run with a stock LQ4 cam, the 6.2L L92 produced 445 hp at 5,600 rpm and 460 lb-ft of torque at 4,600 rpm. After installation of the Comp cam, the power output jumped to 550.3 .%PDF-1.5 %âãÏÓ 1218 0 obj > endobj xref 1218 217 0000000016 00000 n 0000007499 00000 n 0000004636 00000 n 0000007624 00000 n 0000007756 00000 n 0000007893 00000 n 0000008042 00000 n 0000009226 00000 n 0000009387 00000 n 0000009683 00000 n 0000010032 00000 n 0000027596 00000 n 0000027782 00000 n 0000027848 00000 n .
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lq9 pistons in lq4
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lq9 compression test|lq9 cubic inches