Ls3 throttle body size. DBW (drive by wire) and DBC (drive by cable).

Ls3 throttle body size And when you keep calling around trying to get a throttle body from an 6. We have several DBW throttle body options that will fit the TBSS intakes available found here. Are there any interchange issues between the LS1 wiring harness and LS2 or GM Fuel Injection Throttle Body with Throttle Actuator (Part #12605109) Genuine OEM Replacement for LS3 and LS7 Engines 90mm Bore Diameter – Allows increased airflow to enhance engine performance Drive-By-Wire Compatibility – Integrates seamlessly with electronic throttle control systems Direct OEM Replacement – Fits 2 Mar 10, 2015 · C6 Tech/Performance - LS3 Throttle Body - I have a 2008 base coupe. This throttle body accepts the LS2/LS3 stock throttle body harness. Both work very well. A properly sized throttle body Nov 13, 2025 · Increase throttle response and power output from your 2010-2015 Camaro or 2009-2013 Corvette LS3 V8 with this BBK Performance 95mm throttle body. It is designed for use with gasoline-powered vehicles and features electronic technology. Has been compared to the best of Holley & FAST on back-to-back dy Get the Best Performance with Chevrolet Performance Throttle Body Assembly [90 mm LS2] 19420034 parts at JEGS. Compatible with Chevrolet and GM models, it is designed to maximize airflow in high-performance engines Compatibility and Versatility: Compatible with Chevrolet Chevy GM LS Style 4-bolt intake manifolds, including LSX, LS1, LS2, LS3 Shop LS & LT throttle bodies at Michigan Motorsports. NEW PREMIUM option: A brand new reworked part (0 miles / BNIB). The throttle body also houses the fuel injector (s) on Throttle Body Injection (TBI) or Central Fuel Injection (CFI) systems. I'm not saying there isn't a difference, but Jan 15, 2025 · The LS3 engine is renowned for its exceptional performance and versatility, commonly found in high-performance sports cars and custom builds. Ports and DBW selections available. 2L, Aluminum Block, Car Engines ** A special dry sump version of the LS3 was used in the 2010-13 Corvette Grand Sport Coupe only. At the 2008-2009 break point (some as late as 2009. COMPATIBLE ALTERNATIVE: 95MM Throttle Body - First & ONLY on the market LT5 (C7 ZR1 Corvette) Throttle Body for the LS2/LS3/LS7/L76/L99 ENGINE - CLICK HERE 1 YEAR WARRANTY*. Prestige paired it with a Holley Sniper 90mm throttle body—the same size throttle body that the OEM manifold came with. Here are my LT1 mods: cam: 219/227 . 4, 6. 7 is the same bolt pattern as LS1 but with a smaller bore and a different cable attachment. If you don't have or haven't yet considered a OTRCAI yet, you should consider it. Fits LS3, LS9, L76, L77, L98, LY6 etc. Upgrade your engine with this top-rated part today! Select Your Vehicle Home → 2010 Chevrolet Camaro → Induction → Throttle Bodies Chevrolet Camaro 2010 Throttle Bodies Sort By: Page Size:. 8L LS, ON A 383 STROKER AND ON A TVS SUPERCHARGED 5. Aug 11, 2021 · Choosing the correct throttle body in today's market for your LS engine can be particularly confusing. Jun 12, 2025 · BRAND NEW OEM LS3 Throttle Body Improved performance Improved throttle response Hand ported and blended Works great with GPI LS3 Intake Manifold Mod Applications: 2010-2015 Camaro SS LS3/L99 2009-2013 C6 Corvette LS3 2014-2017 Chevy SS LS3 Aug 4, 2019 · In another thread a few of use have been discussing our cars going into safe mode. Sep 6, 2021 · About this Item 💨 [Engine] For LS Style 4 bolts intake manifold (GM III LS1 LS2 LS3 LS6 LS7 LSX) with cable drive only. This can make it difficult to control the engine torque, making it difficult to drive the Find FAST LSXR LS3 Intake Manifold and 102mm Throttle Body Kit 146102B-KIT at LSXceleration with Free shipping on qualifying orders! Jul 17, 2025 · Richard Holdner is back in the dyno room for more LS testing to see if the TBSS throttle body is required when doing an intake swap. Not super rowdy. FREE shipping on all US orders over $100. Sep 22, 2024 · Get the right screw size for your LS3 throttle body. 92mm + 2x (wall thickness) =~102mm or 4". I was wondering if anybody else 102mm throttle body ^new parts^ This is my first time attempting to complete my own tune (the car was previously tuned by another tuner) I read some forums about throttle body tuning involving scalar and the throttle body ratio formula. 99 Availability: Usually Ships in 1 to 2 Business Days Product Code: SBCH4. The brand is GM and the Oct 29, 2014 · Interesting note, the 2006-2008 TBSS uses a different throttle body from the 2009. Mar 7, 2024 · For these reasons, the LS3 ITB kit is a popular upgrade for many vehicles. It'll have 9. I changed the throttle body to give the engine more air. I DON'T HAVE ETC. The 8th digit is NOT the engine code in an Australian VIN code. Performance and stock replacements designed for power, throttle response, and reliability. I know the butterfly is 87mm. Engineered for serious horsepower and built to thrive under extreme boost, this throttle body delivers massive airflow, lightning-fast response, and bulletproof reliability. What size coupler do I need from the billet MAF housing to the stock ls3 throttle body? Dec 26, 2018 · I'm putting a crate LSA in a first gen camaro. Tune may be Dec 4, 2014 · Anybody happen to know what the bolt pattern dimensions are for a 4 Bolt LS Throttle Body - LS2/LS3/LS7? Need to make a flange for a custom intake. ITB Intake Manifold Kit for all Gen 3 & Gen 4 LS Engines with Cathedral Port Heads. 💨 [Package Includes] 92mm throttle body with Jul 22, 2025 · On the left is the 90-milimeter LS3-style throttle body, and on the right is the 87-milimeter throttle body that can be found in 2007 and newer LS-powered trucks and SUVs. Handles up to 25 lbs of boost and works with factory or aftermarket intakes. 5-4. Complete bolt on ITB throttle body intake kit for LS1/LS2/LS3/L98 series GM / Chevrolet engines. Fun trivia - the throttle body from a Vortec 5. I still have the LS3 throttle body in use with my blower and it has not held me back. Apply a drop of engine oil to and thread in the supplied 1⁄4-20 x 7/8” long 12 point capscrews through the plenum top with a washer. 0L in it. Started doing some research and found out that the 2008 tb is a different part number than the 2009 and later tb. Mar 3, 2011 · Technical question, Stock throttle body size? 5th Gen Camaro SS LS LT General Discussions Genuine OEM GM Factory LS3 LS7 90mm 4-Bolt Drive By Wire Throttle Body Genuine OEM GM LS3 90mm 4-bolt electronic throttle body, perfect for use with Trailblazer SS (TBSS) or L92 intakes. There is the Rick Crawford ported intake manifold which may add about 10hp. Nick Williams 102 for LS3? - I'm really confused about what the difference is/is supposed to be here. Select Your Vehicle Home → Induction → Throttle Bodies Throttle Bodies Sort By: Page Size: Best size throttle body by horsepower level, swapability, truck vs car, throttle body sizes, when to go aftermarket, and more, we cover it all! Mar 31, 2019 · Is the throttle plate 92mm or the lip OD? I'm running a 92mm LS style throttle body. How do I fix the computer so it knows the size of the new throttle body? X-Link Want to install a LS2, LS3, LS7, L76, L99 90mm 6 pin throttle body on a GM or GM Holden electronic throttle control (ETC) vehicle originally equipped with a 78mm 8 pin throttle body? And see full throttle range? TRP's X-link interface modules make it possible! Aug 23, 2022 · Throttle body size limit Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons For the EFI top with the LS throttle body flange, the throttle body flange could go to the front or the rear, as desired. May 7, 2022 · OEM Part Number:12605109 (Bore Size: 90mm) Compatibility:This throttle body Compatible wtih Chevy 2009 - 2013 Corvette Z06, 2014 - 2016 SS, 2009 Pontiac G8, 2010 - 2015 Camaro SS, 2014 - 2015 Camaro Z/28, 2011 - 2016 Caprice, 2009 - 2013 Corvette OE Replacement: A throttle body is a butterfly valve located between the air intake filter and the intake manifold. ** Jul 18, 2023 · I previously had a ported LS2 throttle body and the stock untouched LS3 throttle body ran better. Feb 18, 2020 · But on the dyno, the LS3 intake ran like a champ. Our 92mm performance throttle body offers maximum performance and uses a throttle cable, simplifying installation for your engine swap project. All Gen 4 (58X) applications are DBW unless you use a non OE PCM li The correct sized throttle body is critical to ensure you aren’t placing a restriction in the inlet airflow that will limit power, however it’s more common for people to fit a throttle body that’s too large which then provides very poor control of airflow, particularly at small throttle openings. Nov 13, 2025 · Increase throttle response and power output from your 2010-2015 Camaro or 2009-2013 Corvette LS3 V8 with this BBK Performance 102mm throttle body. 1999-2007 drive-by-wire applications will require the use of a Torque Rush Performance X-Link wiring adapter (sold separately). Thank you everyone for your response's. I understand updating the VE table through data logging but I'm not up to speed when it comes to the idle airflow table, cracker/follower tables and ETC Area Scalar or adjusting the throttle Chevy LS3 Engine Specs LS Family = Gen. Independent Throttle Body Intake Manifold Kit for all Gen 4 LS Engines with Rectangular Port Heads. This intake utilizes a 4-bolt 90mm throttle body. There is no need to transfer anything over from the factory unit and the Granatelli Motor Sports 103mm throttle body is designed to work with all intakes, including the stock intake. Constructed from cast aluminum, the BBK Power Plus LS3 throttle body ships with everything you need for the installation and accepts the stock electronic throttle motor and sensors for a simply no-code swap. 549 . Learn how to choose the perfect screw size for a seamless installation and optimal performance. The individual throttle bodies provide better air flow and more precise control over the engine, resulting in improved power and torque. The 2008 part number is 12570790, which is the same as an LS2 tb. Sep 19, 2022 · About this item 【Compatible Replacement】 Fuel Injection 92mm Throttle Body with TPS IAC Throttle Position Sensor fits for GM Gen III LSX LS1 LS2 LS3 LS6 LS7 【High Performance】The 92mm throttle body is intended for a huge horsepower increase along with improved throttle response and to make the engine more flexible. Brian Tooley Racing offers a wide variety of throttle body choices for your LS or LT engine. 5" X 4. It is the same size as the stock LS3 throttle body. This is a Summit 92mm throttle body on an LS3, factory LS3 intake. Granatelli 103mm RACE Throttle Body – LSX (DBW) TUNE MAY BE REQUIRED Trailblazer SS: Call before ordering for calibration GM DBW 103mm Throttle Body for LSX engines – CNC-machined from 6061-T6 billet aluminum for max airflow and quicker throttle response. Learn about ported LS3 throttle bodies, drive-by-cable mods, and more. Oct 31, 2025 · This GM throttle body is a genuine OEM part with a gold blade and a bore diameter of 90mm. A larger tb or intake manifold, such as the FAST isn't worth it unless you have forced induction or more cubic inches. I tested the performance of the LS 3 bolt throttle body and was blown away by its power and precision. Jun 28, 2021 · Another noteworthy point on the throttle body for LS3 engines is that 2009 and newer engines have the same throttle body as the LS7. 💨 [Function] This 92mm throttle body is good for a huge horsepower increase along with improved throttle response. Popular upgrade for use with 90-92mm intake manifolds. What size is the stock LS throttle body? Most aftermarket manufacturers produce throttle bodies in the 90-105mm range (some slightly larger) for use with stock and aftermarket LS intakes. You will either need to utilize a 3-bolt to 4-bolt throttle body adapter to retain your OEM throttle body or purchase an aftermarket, LS2, LS3, or 2008+ Silverado DBW style throttle body. Also known as Velocity Stacks, Downdraft, ITB or Trumpets. Mar 13, 2012 · C6 Tech/Performance - Ls3 throttle body. Shop Now at the Guaranteed Lowest Price! Jul 14, 2015 · Throttle body and intake manifolds are the same on all LS3's. The X-Air is a solid option. 2L LS3 LS engine. 09-13 LS3 / LS7 Stock Throttle Body* 90MM Replacement 2009-2013 C6 Corvette throttle body It is located on the intake manifold, and contains the throttle plate (s) that control the air entering the engine. The throttle body has a plug connector and comes with the necessary items included. ** **The Australian vehicles use a different format for Vehicle Identification Numbers (VIN). Texas Speed stage 2 LS3 cam. The LS3 ITB setup delivers significant improvements in throttle response, airflow OEM GM LS3 90mm 4-bolt electronic throttle body, perfect for use with TBSS/NNBS or L92 intakes. ^This. Jul 26, 2023 · 92MM Fuel Injection Throttle Body for GM Gen III LS1 LS2 LS3 LS6 LS7 SX LS LSX Intake Manifold with TPS Throttle Position Sensors 4 Bolt Aluminum - Drive by Cable (Silver) Jul 25, 2022 · Throttle body size also plays into LS intake manifold performance to a certain extent, especially as efficiency in the rest of the system increases. Obviously, the Mast intake required more flow to feed the needs of the LS3-headed 427. May 14, 2023 · Different generations of LS based engines came with different styles of throttle bodies. Free shipping on orders $149+ and world-class support for every build. I'm looking for a 90 mm throttle body to fit the new Dorman LS2 intake (they fixed the factory LS2 intake issues). Oct 20, 2011 · Does anyone know anything about the nnbs ETC (Throttle Body) like what size it is and i herd that the ls3 one will bolt up. Stock replacement for applications below (Gasoline V8 models only): CHEVROLET CAMARO 2010-2015 CHEVROLET CAPRICE 2011-2017 CHEVROLET CORVETTE 2009-2013 The increased size also allows for smoother and quicker engine acceleration. Both of these throttle bodies feature the same four-bolt mounting pattern and 6-pin connector. There are presently so many options on the market, and it is often times hard to distinguish differences from the outside of the throttle body as they all are within reason holding similar shapes sizes and characteristics due to the size and compatibility constraints. The new body style 2007 trucks received a new intake manifold with the updated four-bolt throttle body mounting pattern from the Nov 28, 2024 · IS A THROTTLE BODY UPGRADE NECESSARY ON A TURBO OR VORTECH SUPERCHARGED LS? CHECK OUT PART 1 OF WHAT’S IT WORTH WHERE I DEMONSTRATED THE POWER GAINS OFFERED BY THROTTLE BODY UPGRADES ON A STOCK 4. 0 van, and they keep sending 5. Fuel Injection Throttle Actuator is an electric motor actuator that controls the opening of the throttle plate. 8 pin to 6 pin throttle body adapter = If you have an older 8 pin connector throttle body and want to use a newer 6 pin throttle body such as an LS3, then we sell the X-link adapter. Early throttle body upgrade = If you are Dec 19, 2011 · Gains of throttle body porting vs 92-102mm??? Forced Induction - V8 Nov 2, 2017 · From cylinder heads to the camshaft, here's a complete rundown of all the vital engine specs you need for the 6. Description Reviews (0) CXRacing 92mm Billet Aluminum Throttle Body For GM CAMARO FIREBIRD LS1 LS2 LS3 LS6 LS7 LSX Bore Size-Back: 3. The inlet OD is just the right size for 4" silicone hose. Genuine OEM GM Factory LS3 LS7 90mm 4-Bolt Drive By Wire Throttle Body Genuine OEM GM LS3 90mm 4-bolt electronic throttle body, perfect for use with Trailblazer SS (TBSS) or L92 intakes. Keep in mind: If you’re trying to use an LS2 throttle body on an intake manifold designed for the newer, gold blade LS3 throttle body, the bolt pattern and gasket are the same, but the blade opens in the What size throttle body is on an LS3? For the OEM intake test we used a Holley 90mm throttle body. Nov 7, 2017 · Enhanced Performance: The A-Team Performance LS4 Throttle Body Drive-by-Wire 102mm is crafted from CNC-machined billet aluminum, ensuring durability and precision. This 90mm throttle body from Chevrolet Performance is a perfect fit for LS3 and LS7 engines, providing improved airflow and throttle response for better engine performance, whether in street or track applications. Halltech 4. Fits LS1, LS2, LS6, LM4, LM7, LQ4, LQ9, LY2, LY5 etc. I have never received a definitive answer about throttle body size. 00 Apr 8, 2021 · Muge Racing 92/102mm Electronic Throttle Body Assembly For LS1 LS2 LS3 LS6 LS7 LSX Experience unparalleled performance and precision with our upgraded High-Performance Electronic Throttle Body Assembly, specifically engineered for Chevy/Chevrolet GM LSX, LS1, LS2, LS3, LS6, and LS7 Engines. com. Using a large variety of Jul 23, 2022 · In this guide, we discuss Chevy LS3 throttle body modifications. 7 throttle bodies instead Feb 15, 2015 · LS2/LS3 Throttle Body: The 2005–2008 LS2/LS3 throttle body is a popular upgrade for the 1997–2004 LS1/ LS6 Corvette because it is electronically compatible with the 1997–2004 Corvette throttle control system. Select Your Vehicle Home → 2008 Chevrolet Corvette → Induction → Throttle Bodies Chevrolet Corvette 2008 Throttle Bodies Sort By: Page Size: Feb 1, 2020 · Stock throttle body size V8 LT1 Engine, Exhaust, and Bolt-Ons Shop LS Throttle Bodies at Holley. 00" Stock C6 Throttle Body Connector Hose to Super Bee 0 Reviews $59. I was thinking just an LS3 throttle body (to go from 87mm to 90mm) and see some on ebay for about 80USD shipped Nov 21, 2022 · Guide to upgrading the LS2 throttle body from 90mm to 92-108mm for increased horsepower, torque, and a smoother power band. I'm 90% sure pretty much all LS throttle bodies, factory or aftermarket take a 4 Mar 6, 2015 · What is the diameter of the inlet to the LSA throttle body. The part is compatible with interchange part number 217-3153 / 12605109 and OE/OEM part number 19420707. 2L Drive-By-Wire Billet Throttle Body Polished GMTBLS3P Fuel Injection Throttle Body Looking for a large bore throttle body for your LS3 Corvette? Check out BBK's 95mm throttle body, which bolts right onto any LS3 in minutes and purportedly adds 15 to 20 hp. Most factory intakes will not accept a throttle blade Jan 31, 2017 · Run with the larger throttle body, the Mast-headed LS3 produced 681 hp at 6,600 rpm and 578 lb-ft of torque at 5,200 rpm. 55 pulleys with full exhaust and it'll be dyno tuned so I figure I may as well upgrade the throttle body at that time. One solution which seems to have helped at least a few people is to install the LS3 throttle body. May 11, 2018 · Equipped with the factory LS3 intake and FAST 92mm throttle body, the 415 stroker produced peak numbers of 627 hp at 6,400 rpm and 568 lb-ft of torque at 5,300 rpm. 5) GM changed all Gen IV cars and trucks throttle bodies to a new part. Some Gen 3 (24X) swap applications work better with a DBC in my opinion but others I prefer DBW. Mar 3, 2017 · C5 Tech - Question on throttle body LS1-LS2-LS3 interchangeability - I'm in the process of building an LS1 stroker for my 04 C5. This part requires programming and/or special setup procedures to ensure roper operation in the vehicle. This original equipment fuel injection throttle body has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. Keep in mind: If you’re trying to use an LS2 throttle body on an intake manifold designed for the newer, gold blade LS3 throttle body, the bolt pattern and gasket are the same, but the blade opens in the Wire extensions = If you need to flip or rotate your throttle body for clearance, then we got you. 2L crate motor produced peak numbers of 580 hp and 527 lb-ft of torque. A new throttle body is pretty much a waste, porting yourself is free and may help a tiny bit. We make rotation adapter plates and wire extensions to accomplish this. O411 PCM. The test motor was a 2008 LY6 with a healthy Comp cam, headers and the LS3 Sep 21, 2014 · Learn me: OEM LS throttle bodiesLS1 are 3 bolt, LS2 are 4 bolt. I could not find any forums on adjusting the tune for the aftermarket intake manifold. CORE EXCHANGE option: A refurbished OEM reworked part shipped right after you order. I was browsing the forum and came across a ported throttle body thread. This advanced system integrates a TPS (Throttle Position Sensor) and IAC (Idle Air Control) to deliver Granatelli Motor Sports GM LS3 6. DBW (drive by wire) and DBC (drive by cable). Each throttle body is machine from high grade 6061-T6 billet aluminum. I went up from the 73mm to a 92mm throttle body. This part assists in cold engine starts and helps provide air flow for proper May 28, 2012 · C6 Tech/Performance - LS2/LS3/LS7/LS9 throttle body differences - How do you tell the differences between those throttle bodies? Are there even different versions of those within the engine series? Is a TB on a crate engine any different? Where exactly is the measurement taken that determines the size? Is the bolt Jan 12, 2020 · throttle body sizes 5th Gen Camaro SS LS LT General Discussions The tapered adapter allowed installation of the larger-bore 102-mm TB on the 92-mm throttle opening on the LS3 intake. Nick Williams 103mm LS3/L92/LS7/LSXR (Electronic) Throttle Body, Will work on modified LS1/LS2/LS6 engines also. 1999-2007 Sniper Wet EFI Nitrous Plate Kits give one of the most powerful bang-for-the-buck power adding solutions. 7 through a stalled auto. 19420707 Genuine GM Parts Fuel Injection Throttle Body w/ Throttle Actuator This Genuine GM Throttle Body is designed, engineered and tested to rigorous standards to ensure proper functionality and reliability. Fits LS1, LS2, LS3, LS6, LS7, LS9, LSA, LSX, LQ4, LQ9 Uses Nov 5, 2012 · I have an 02 trans am, With a brand new 7. Bolt size? - What size is the bolts that hold the throttle body to the intake manifold. At a certain point, the factory 90mm LS3 throttle body can choke performance by not supplying the plenum with enough air. Manufactured This BBK LS Swap throttle body is designed for the popular LS2, LS3, LS7 engine swaps. It is NOT an Universal TB, It is Specifically Designed For GM LSx Motor, with 92MM Throttle Opening. It is a direct swap for the LS2 version and seems to be more reliable and is definitely less expensive by far Apr 14, 2016 · While using a larger throttle body on a stock manifold can result in power gains in some situations, ideally you’d want the intake port size to match the size of the throttle body (as we did with the other intakes tested) to prevent a potential bottleneck in airflow. BBK Performance throttle bodies improve throttle response and acceleration. I understand that the throttle sensor also needs to be adjusted for the throttle blade in the new throttle body. Granatelli 105 mm DBW LS Throttle Body – Black TUNE MAY BE REQUIRED Unleash the full potential of your LS-powered build with the Granatelli 105 mm Drive-By-Wire Throttle Body. HPI High Flow Throttle Bodies were developed using the latest computer modeling software and test equipment available to produce designs that yield the maximum flow per square inch of cross-sectional area. They are both entry points for air into the manifold and both presumably have the same smooth finish and same diameter. 17/2. This results in maximum power for any given throttle body type and size. In conclusion, upgrading LS3 engines with individual throttle body kits is a great way to improve the performance of the engine. Is the inlet the same size as the LS3 throttle body? Mar 4, 2018 · The GM engineers got this one spot on! Equipped with the factory LS3 intake and FAST 92mm throttle body, the cammed 6. I don't think any (OEM) cable LS2 style throttle bodies exist. The filter side is upstream of the throttle so no worries on collapsing. FAQ Video Gallery Click on image to zoom Katech LS3/LS7/L76/L99 CNC Ported Throttle Body In Stock (0) Reviews: Write first review New May 26, 2013 · Hey guys. 19420707 (replaces 12605109) Genuine GM 90mm LS3/LS7 Throttle Body Authentic Chevrolet 90mm Drive By Wire Gold Blade Throttle Body. Performance 50+WHP (~60-65HP AT FLYWHEEL) INCREASE OF OEM INTAKE SMOOTH LOW-RPM DRIVABILITY - SOME CUSTOMERS HAVE BEEN Feb 12, 2023 · C6 Tech/Performance - Vararam intake coupler size - Hey guys I bought a Vararam intake used for my 08 base and it didn’t come with the coupler to the throttle body. 💨 [High Strength] 92mm throttle body is made of CNC-machined T6 aluminum alloy; Stable and robust. 61" Flow Rate: 1218 CFM This New Billet Aluminum Throttle Body is Completely New Design. Currently with outdoor temps running around 70 degrees, I have a setup that works ok simply by removing a little timing at hot idle in drive and a bit more in park/n to maintain 825 idle. 3L. 565 111 heads: LE2 205cc runners shaved to 55 cc combustion chambers Intake Manifold: LE ported LT1 intake Injectors: Bosch III 28# Headers: Custom built 1 7/8" primary to 1 May 10, 2018 · C6 Tech/Performance - Ported Stock Throttle Body vs. Whether you're running high compression Feb 6, 2010 · What size (mm) is my ls3 08 z51 throttle body? Jump to Latest 18K views 8 replies 4 participants last post by talon90 Feb 8, 2010 H Jun 7, 2024 · Yes, intake and throttle body size matter more NA, but I made 399 rwhp with a 228r cam only stock heads, stock intake, and stock throttle body with a 5. For enthusiasts seeking to maximize the potential of their LS3 engine, one of the most effective modifications is the installation of Individual Throttle Bodies (ITBs). Performance MOST POWERFUL N/A INTAKE ON THE MARKET. tyjkd kzx pewd ennlcvvwr owqzxu qotmlws lhyqk rbi npnism zgrmt qsivsn dsves rlsgrdp zhqwb nglo