This is the closest engine dyno test to our MM engine I could find. 1 3/4" vs 1 7/8" is somewhat old news. Long Tube Headers Recent tests of our headers on a C6 Corvette netted us 30 horsepower and 25 lb/ft of torque! Long tube headers will make AT LEAST 20+ rwhp more that the current aftermarket choices available which aren't much better than stock manifolds IMHO. This set is Hooker's part number 70101504-1HKR. I can get the whole truck for $600 . Go. . Sounds really good now with true duals, with X pipe and Flowmaster Super 10 Series mufflers. . Matt. IIRC you are running the cc306 which has 6* more duration on exhast which isn't a lot for an LT1, so you would benefit nicely from a free . This highlight. Upgrading LQ4/LQ9 Cylinder Heads The stock heads can be CNC ported for more airflow and milled up to .030 in. All LT headers are going back on the stock exhaust. There's plenty of room for a set of long-tube headers in a C10 chassisand they'll last as long as cast iron if you source a set with a ceramic coating. It has been pressure checked for cracks and resurfaced. This is one of the primary reasons that long tube headers are frequently not fifty-state legal. Hooker Competition headers offer the best value in the high performance header market. Using the hooker 1" forward mounts and a 4l80e. Mid lengths gives you torque and HP and longtubes give you more HP in the higher RPM levels and mid range torque. Changing pistons and/or cylinder heads will allow you to change the compression ratio. Jul 30, 2012 Roger. Speed Engineering headers are made out of 304 stainless steel and offer great quality, performance, and affordability. 220ish range cam I like LSL or EPS lobes Id stay away from XER's for dd use. to fit the seats. clear the starter and oil filter (both removable without aggravation). Merge Spikes. Years back I. was much more active on this site and with the truck. Reaction score. The 1 7/8" headers outperformed through the entire rpm range and didn't kill any bottom end. Since the pistons protrude from the cylinder on LS engines, using a head gasket less than .040" is really pushing it and rocking of the piston in the bore can cause piston to head contact. I agree. GM FULL SIZE 4.8L / 5.3L / 6.0L / 6.2L TRUCK / SUV 1999-2013. Features include: Mandrel Bent Tubing. The LQ4 is a 6.0L LS (Gen. 3) small block engine used in GM trucks between 1999 and 2007. They are 1.625" tubes with 3" collectors. For shorty headers, the port pipes actually merge into a single exhaust pipe in a much shorter distance. Joined . I'm running an LS376/480 with a TR6060 in a 1980 Z28. I would prefer to gain compression by reducing the size of the combustion chamber. I have attached a professional dyno test review of the FRPP shorty headers on a Cobra 4V NA 10.5 compression engine. but it will certainly optimize the gains from the headers. Kooks Road Tour STOP 1: NMRA/NMCA Nationals, Rockingham NC. V8 Engines Only. This applies to any of the other functional mods (muffler, intake, etc.). However, you will need to upgrade the internals to handle that kind of power. Manifolds cant even compare to any header. Exhaust is a big deal on the LS engines, so a full exhaust with long tube headers is worth close to 30-35 RWHP. for more compression. i will be running a 383/480HP but i have the headman shorty headers but there only 1 5/8 but they fit well ,if i were to buy the long tube they would be 1 3/4 has anybody dyno tested headers to see the gain of full length headers on a mild sbc Finally, after the long tube headers are installed are there any steps I need to take to get the best performance out of the mod. The crossmember is a Hooker t56 and the headers are Speed Engineering. In an effort to light a fire under my ***, I've decided to create my own build thread after about 7 years. Kooks Headers. I had completed a 2.8 to 4.3 swap in 2002. Because of this, each design impacts back pressure in the exhaust system in a different way. Flowtech 11534FLT 1-7/8" Long Tube Headers & 3" Y-Pipe, 2007-2013 GM Silverado/Sierra V8-4.8/5.3/6.0/6.2L, Black Mild Steel fits the following vehicle(s): 2008 Cadillac Escalade 2009 Cadillac Escalade 2010 Cadillac Escalade 2011 Cadillac Escalade 2012 Cadillac Escalade 2013 Cadillac Escalade 2014 Cadillac Escalade Been looking for a nice set of catted headers to keep the drone and noise down for the family any input on people with catted LT headers..looks like not too many options OBX for $800-$900 AMERICAN RACING $1500-$1600 and maybe Kook's long tube headers are the only ones I have found. For comparison, Super Chevy did a dyno test of the 69 Yenko Camaro w a manual, bone stock, and it made 276RWHP. 1-1/2" (Dynatech Headers w/ball flange collectors). We stand behind our headers in saying you will not find a better fitting, quality built, budget header for your vehicle. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch of the GM family . TSP 99-07 (Classic NBS) GM Truck/SUV, 2WD & 4WD 1-3/4" Stainless Steel Long Tube Headers fits the following vehicle(s): 2005 Cadillac Escalade 1999 Chevrolet Silverado 1500 2000 Chevrolet Silverado 1500 2001 Chevrolet Silverado 1500 2002 Chevrolet Silverado 1500 2003 Chevrolet Silverado 1500 2004 Chevrolet Silverado 1500 In work: LQ4, L92 heads, LS3 intake . They look awesome. 1-3/4" Primaries for Maximum Flow. Header Style: Long Tube. Nov 8, 2017 #1 P. Peezer123 TYF Newbie. Made of durable 16 gauge mild steel tubing, the Hooker Competition header design utilizes a long transition collector to reduce . . Silver Ceramic Coated Finish. 120-6795 1 7/8" Stainless Steel long-tube headers (2wd only) $1049.00. Product breakdowns and malfunctions are covered after manufacturer's warranty. Using a thinner head gasket brings head closer to deck, decreasing the area between the head and piston to increase CR. Specs: 231/244 .630"/.615" 112.5+2.5. For marketing purposes, it was also known as the Vortec 6000. using nitrous, a blower, or a turbo. It raised my header ground clearance approx. 4.8L, 5.3L, 6.0L, 6.2L Engines. . Header collector flange to ground clearance went from 3" to approx. The dyno test below was conducted on a stock 5.3 with a truck intake, valve spring upgrade, and long tube headers. . Even a painted set of headers will last a long time if they're finished with a ceramic header paint before installation. 2006 1500hd LQ4, 706 heads, 1 7/8 long-tube headers, BTR stage 2 v2 cam (212/218 @.50, 553/553, 111 lsa) 12-15-2021 #4 blindsquirrel Senior Tuner Join Date Apr 2017 Location Meridian MS Posts 2,886 No spacers needed on the TBSS intake/rails, but there are so many versions over the years of the old style intake I can't say. The shorty headers offered an additional 3 hp over the stock manifolds, while the gains from the long-tube headers were as high as 9 hp. Re: LS1/LQ4/LQ9 swap (mattblancarte) Quote. . For dyno use, I installed a set of long-tube headers, FAST throttle body, and XFI management system. Feb 27, 2013. It reduces low pressure turbulence increasing the scavenging effect of the cylinders thus increasing flow and power output. The Heads, Camshaft, and Intake Manifold upgrade combination is the tried and true method of getting big power out of any engine. shaved 317 heads, free-flowing air intake, long tube headers, 3600 stall, 3.73 posi. As the title says, I've got an '87 2WD Blazer I'm swapping. Gains over 25+ rwhp. Best: 12.57 @ 109 at 5800' elevation; 11.82 @ 114 at HPT. Between the light valves and better springs, the engines will pull cleanly to 7000 rpm. 3" Collector. . FAST also supplied the 75-pound injectors and aluminum fuel rail employed during the test. Long tube headers. Our headers are mandrel bent, tig welded, and feature polished stainless steel construction. Unsere Bestenliste Aug/2022 Umfangreicher Test Ausgezeichnete Geheimtipps Aktuelle Schnppchen Alle Testsieger Direkt lesen! Longer port pipes result in lower exhaust back pressure. Lightweight hollow stem LS3 valves can be cut to 2.000 in. . All of our headers have been dyno proven. Wish List Compare. Merge Spikes. GM Performance Axle Back TSP Long Tubes with offroad connection pipes TSP Cleetus McFarland "Bald Eagle" NA cam K&N Cold Air 130k miles 466whp/429wtq Build and Dyno Video: https://youtu.be . The heads were run with a Fast LSXR intake and 102mm throttle-body (we had both the cathedral and rec-port versions on hand). We stand behind our headers in saying you will not find a better fitting, quality built, budget header for your vehicle. Our headers are mandrel bent, tig welded, and feature polished stainless steel construction. The new ZR1 Corvette and LSA equipped CTS-V produce even more, showing a monstrous gain of 55 horsepower and 50 lb/ft of torque! 1998-2002 F-Body. P Philvas1500hd Registered Joined Jul 31, 2012 5 Posts Thread starter Peezer123; Start date Nov 8, 2017; 1; 2; 3; Next. Features include: Mandrel Bent Tubing Merge Spikes PaceSetter Quik-Trip Long Tube Headers are always built to last and seal tight. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood. Stock truck intake. With a 4000lb car you dont want big tube headers to take away the the low end torque. For long tube headers, the exhaust pipes are much longer and merge farther out. My engine setup is like yours, LQ4 with truck excessories/ sanderson 1 3/4 headers. Add to cart. This is by far the best bang for your buck when it comes to cheap HP. We use the 1.875" on our 429 Alky Z06 with 13:1 compression, but when installed on a 427 without mods, the torque loss is felt. #3. Long tube headers are best for track cars or other machines that spend most of their time in the higher end of the RPM range. Definitely can tell a difference mid-high end . Texas Speed contributed a set of 1 7/8 inch stainless long tube headers to open up the exhaust cycle. Each uses 16-gauge mandrel-bent mild steel with thick flanges. Also present was a Meziere electric water pump, QTP 134-inch long-tube headers and a FAST XFI/XIM management system. It depends on which cam you are running, if you have a cam with lots more duration on the exhast side, then gains won't be as much as say a cam with equal amouts of duration. No, a shorty header benefits torque gains. This is said to push the CR to about 10.9:1 Then, buy a "real cam" and with a good tune and long tube headers, I'd put down over 500HP, easy. We based this kit on years of testing, tuning, and using different camshafts, cylinder heads, and intake combos. '57 Bel Air, my 1st car. Long tube headers and dual 2.5 or 3" exhaust with aerochamber mufflers. After everything settled in overall height dropped just under a 1/4". some time ago there was a discussion about this and i bought a set of Speed Engineering long tube swap headers #25-1026. they are 304ss headers for putting a LS motor in a C-10 truck. I have a set in my 69 elco with a 6.0l lq4. They had interesting comparisons on a stock LS1 many years ago, on the same dyno, same day. 1980 Camaro Z28. Warning / California (Proposition 65) Warning / California (CARB) we tried to keep coolant temp and IAT temps the same from run to run, in order to keep this test as legit as possible. Product Description Truck & SUV 1 3/4" Long tube Headers (1999-2006 Speed Engineering headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Hansson skateboard - Die besten Hansson skateboard im Vergleich. Doug's Headers D3373 Metallic Ceramic Coating 3/8" thick flanges. Check out my YouTube video of the build along with dyno results. Fits 1999-2013 Chevy an GMC Truck or SUV V8 6.0L - Full Size 2WD/4WD Truck and SUV Only (Does NOT Fit Chevy Trailblazer, Chevy SS or SSR) Gaskets and Hardware Included. Speed engineering long tube headers. ARH long tube headers with cats stock rear section exhaust DSX flex fuel sensor setup FIC 725 cc injectors Vararam intake CMS custom flex fuel calibration all runs done on e85, ethanol content of 76-78% throughout the day. Automatic applications will need an aftermarket torque converter to take full . So some where between 360 to 375 at the rear wheels. 9. Next, the drive-by-wire 90mm throttle body was replaced with a manually-controlled 92mm unit, 1 7/8 Hooker long-tube headers were installed and a Holley HP ECU was set up to control the engine on the dyno. The first, and most basic job of your exhaust manifold/headers is to funnel exhaust gases away from the engine bay to the rest of your exhaust system in order to vent those gases somewhere out of the way. PROJECT DARK KNIGHT VORTEC LQ4. Depending on the style of long tube header, it may require either relocating or else uninstalling the catalytic converter.