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General Motors Atlas engine
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<h2 id="ll8-vortec-4200">LL8 (Vortec 4200)</h2> <p>The LL8 (or Vortec 4200), is a <a href="/facts/Straight-6/D5e5WIIr">straight-6</a> gasoline engine produced from 2002 to 2009. It was the first Atlas engine, and was introduced in 2002 for the <a href="/facts/Chevrolet_TrailBlazer/jf4INKNt">Chevrolet TrailBlazer</a>, <a href="/facts/GMC_Envoy/VCe0B5g6">GMC Envoy</a>, and <a href="/facts/Oldsmobile_Bravada/l7YxdD9H">Oldsmobile Bravada</a>. The engine was also used in the <a href="/facts/Buick_Rainier/EqxaERLR">Buick Rainier</a>, <a href="/facts/Saab_9-7X/z3T2L3xy">Saab 9-7X</a>, and <a href="/facts/Isuzu_Ascender/Ly2fdQ12">Isuzu Ascender</a>. </p><p>It displaces 4.2 L (4,160 cc; 253.9 cu in), with a 93 mm × 102 mm (3.66 in × 4.02 in) bore and stroke. It has four valves per cylinder, utilizes dual-overhead cams (<a href="/facts/DOHC/z2D9nIL5">DOHC</a>) design, and features <a href="/facts/Variable_valve_timing/Dcff7UBg">variable valve timing</a> on the exhaust cam, a first for GM inline engines. When introduced, this engine's power was 270 hp (201 kW) at 6,000 <a href="/facts/Revolutions_per_minute/fdNmLToF">rpm</a> and torque was 275 lb⋅ft (373 N⋅m) at 3,600 rpm. 2003 saw a slight bump in power to 275 hp (205 kW), while torque was unchanged. For 2006, power was increased to 291 hp (217 kW) at 6,000 rpm and torque to 277 lb⋅ft (376 N⋅m)) at 4800 rpm with the addition of a <a href="/facts/Mass_flow_sensor/ESCDDl2d">MAF</a> and a complete internal redesign of the engine; however, due to the new <a href="/facts/SAE_viscosity_number/Q9vGazEu">SAE</a> rating procedures, ratings can vary slightly between years. The engine redline is 6,300 rpm. The LL8 was on the <a href="/facts/Ward%2527s_10_Best_Engines/4KV5heVE">Ward's 10 Best Engines</a> list for 2002 through 2005 and was the basis for all the other Atlas engines. With the closure of the <a href="/facts/Moraine%2c_Ohio/VYJebkWt">Moraine, Ohio</a>, plant and the discontinuation of the <a href="/facts/GMT360/AgtcCmxJ">GMT360</a> platform (Chevrolet TrailBlazer, GMC Envoy, etc.), production of the LL8 also ended.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p><p>Applications: </p> <ul><li>2002–2009 <a href="/facts/GMC_Envoy/VCe0B5g6">GMC Envoy</a>, <i>Envoy XL</i>, and <i>Envoy XUV</i></li> <li>2002–2009 <a href="/facts/Chevrolet_TrailBlazer/jf4INKNt">Chevrolet TrailBlazer</a> and <i>TrailBlazer EXT</i></li> <li>2002–2004 <a href="/facts/Oldsmobile_Bravada/l7YxdD9H">Oldsmobile Bravada</a></li> <li>2004–2007 <a href="/facts/Buick_Rainier/EqxaERLR">Buick Rainier</a></li> <li>2003–2008 <a href="/facts/Isuzu_Ascender/Ly2fdQ12">Isuzu Ascender</a></li> <li>2005–2009 <a href="/facts/Saab_9-7X/z3T2L3xy">Saab 9-7X</a> 4.2i</li></ul> <h2 id="llr-vortec-3700">LLR (Vortec 3700)</h2> <p>The LLR (also called Vortec 3700), is a <a href="/facts/Straight-5/9TDSosf4">straight-5</a> <a href="/facts/DOHC/z2D9nIL5">DOHC</a> engine produced from 2007 through 2012. It displaces 3.7 L; 222.9 cu in (3,653 cc), courtesy of a larger 95.5 mm (3.76 in) bore while keeping the 102 mm (4.02 in) stroke. The LLR also corrected the head issue found in the <i>L52</i>. It produces 242 hp (180 kW) at 5,600 <a href="/facts/Revolutions_per_minute/fdNmLToF">rpm</a> and 242 lb⋅ft (328 N⋅m) at 4,600 rpm. The engine redline is 6,300 rpm.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> </p><p>Applications: </p> <ul><li>2007–2012 <a href="/facts/Chevrolet_Colorado/DDhernL8">Chevrolet Colorado</a> and <a href="/facts/GMC_Canyon/DDhernL8">GMC Canyon</a></li> <li>2007–2010 <a href="/facts/Hummer_H3/BkupCWko">Hummer H3</a></li> <li>2007–2008 <a href="/facts/Isuzu_i-370/DDhernL8">Isuzu i-370</a></li></ul> <h2 id="l52-vortec-3500">L52 (Vortec 3500)</h2> <p>The L52 (also called Vortec 3500), is a <a href="/facts/Straight-5/9TDSosf4">straight-5</a> <a href="/facts/DOHC/z2D9nIL5">DOHC</a> engine produced from 2004 through 2006. It displaces 3.5 L; 211.1 cu in (3,460 cc), with a 93 mm × 102 mm (3.66 in × 4.02 in) bore and stroke. <a href="/facts/Dynamometer/IcDW7VUg">Dynoed</a> at the <a href="/facts/Flywheel/x6yw1efR">flywheel</a> it produces 220 hp (164 kW) at 5,600 <a href="/facts/Revolutions_per_minute/fdNmLToF">rpm</a> and 225 lb⋅ft (305 N⋅m) at 2,800 rpm. The engine redline is 6,300 rpm.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> </p><p>Applications: </p> <ul><li>2002 <a href="/facts/Chevrolet_Bel_Air/xUBmIKTo">Bel Air</a> concept</li> <li>2004–2006 <a href="/facts/Chevrolet_Colorado/DDhernL8">Chevrolet Colorado</a> and GMC Canyon</li> <li>2006 <a href="/facts/Chevrolet_Colorado/DDhernL8">Isuzu i-350</a></li> <li>2006 <a href="/facts/Hummer_H3/BkupCWko">Hummer H3</a></li></ul> <h2 id="llv-vortec-2900">LLV (Vortec 2900)</h2> <p>The LLV (also called Vortec 2900) is a 2.9 L; 178.3 cu in (2,921 cc) <a href="/facts/Straight-4/NVgxSDFb">straight-4</a> <a href="/facts/DOHC/z2D9nIL5">DOHC</a> engine produced between 2007 and 2012, with a 95.5 mm × 102 mm (3.76 in × 4.02 in) bore and a stroke. It replaced the LK5 and produced 185 hp (138 kW) at 5,600 <a href="/facts/Revolutions_per_minute/fdNmLToF">rpm</a> and 190 lb⋅ft (258 N⋅m) of torque at 2,800 rpm. The engine redline is 6,300 rpm.<a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a> </p><p>Applications: </p> <ul><li>2007–2012 <a href="/facts/Chevrolet_Colorado/DDhernL8">Chevrolet Colorado</a> and <a href="/facts/GMC_Canyon/DDhernL8">GMC Canyon</a></li> <li>2007–2008 <a href="/facts/Isuzu_i-290/DDhernL8">Isuzu i-290</a></li></ul> <h2 id="lk5-vortec-2800">LK5 (Vortec 2800)</h2> <p>The LK5 (also called the Vortec 2800) is a 2.8 L; 169.0 cu in (2,770 cc) <a href="/facts/Straight-4/NVgxSDFb">straight-4</a> <a href="/facts/DOHC/z2D9nIL5">DOHC</a> engine produced between 2004 and 2006, with a 93 mm × 102 mm (3.66 in × 4.02 in) bore and stroke. It produces 175 hp (130 kW) at 5,600 <a href="/facts/Revolutions_per_minute/fdNmLToF">rpm</a> and 185 lb⋅ft (251 N⋅m) of torque at 2,800 rpm. The engine redline is 6,300 rpm.<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a> </p><p>Applications: </p> <ul><li>2004–2006 <a href="/facts/Chevrolet_Colorado/DDhernL8">Chevrolet Colorado</a> and <a href="/facts/GMC_Canyon/DDhernL8">GMC Canyon</a></li> <li>2006 <a href="/facts/Isuzu_i-280/DDhernL8">Isuzu i-280</a></li></ul> Wikimedia Commons has media related to General Motors Atlas engine. <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"5 Cylinder Engine - Vortec 3500". Retrieved 2011-10-13. <a href="https://www.counterman.com/tech-feature-straight-look-vortec-3500-straight-five-engine/" target="_blank">https://www.counterman.com/tech-feature-straight-look-vortec-3500-straight-five-engine/</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"Improved Performance and Efficiency Highlight a Robust Powertrain Lineup for '05". Archived from the original on 2010-01-08. <a href="https://web.archive.org/web/20100108030402/http://archives.media.gm.com/division/2005_prodinfo/powertrain/index.html" target="_blank">https://web.archive.org/web/20100108030402/http://archives.media.gm.com/division/2005_prodinfo/powertrain/index.html</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"5 Cylinder Engine - Vortec 3500". Retrieved 2011-10-13. <a href="https://www.counterman.com/tech-feature-straight-look-vortec-3500-straight-five-engine/" target="_blank">https://www.counterman.com/tech-feature-straight-look-vortec-3500-straight-five-engine/</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>"2006 Vortec 2800 2.8L I-4 (LK5)" (PDF). Archived from the original (PDF) on 2016-01-09. <a href="https://web.archive.org/web/20160109064824/http://archives.media.gm.com/us/powertrain/en/product_services/2006/Spec%20Sheets/Line%20456/2006%20Line%20I4%20Truck%20(LK5).pdf" target="_blank">https://web.archive.org/web/20160109064824/http://archives.media.gm.com/us/powertrain/en/product_services/2006/Spec%20Sheets/Line%20456/2006%20Line%20I4%20Truck%20(LK5).pdf</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>"2006 Vortec 3500 3.5L I-5 (L52) Spec Sheet" (PDF). Archived from the original (PDF) on 2016-01-09. <a href="https://web.archive.org/web/20160109064824/http://archives.media.gm.com/us/powertrain/en/product_services/2006/Spec%20Sheets/Line%20456/2006%20Line%20I5%20Truck%20(L52).pdf" target="_blank">https://web.archive.org/web/20160109064824/http://archives.media.gm.com/us/powertrain/en/product_services/2006/Spec%20Sheets/Line%20456/2006%20Line%20I5%20Truck%20(L52).pdf</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>6 Cylinder Engine - Straight Six - Explained, retrieved 2023-06-17 <a href="https://www.youtube.com/watch?v=w5NZsc1oQpU" target="_blank">https://www.youtube.com/watch?v=w5NZsc1oQpU</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>2007 LLR Spec Sheet <a href="https://web.archive.org/web/20111027073341/http://archives.media.gm.com/us/powertrain/en/product_services/2007/Spec%20Sheet/Line%20456/2007_LL8.xls" target="_blank">https://web.archive.org/web/20111027073341/http://archives.media.gm.com/us/powertrain/en/product_services/2007/Spec%20Sheet/Line%20456/2007_LL8.xls</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>2007 LLR Spec Sheet <a href="https://web.archive.org/web/20111027073341/http://archives.media.gm.com/us/powertrain/en/product_services/2007/Spec%20Sheet/Line%20456/2007_LL8.xls" target="_blank">https://web.archive.org/web/20111027073341/http://archives.media.gm.com/us/powertrain/en/product_services/2007/Spec%20Sheet/Line%20456/2007_LL8.xls</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>"2006 Vortec 3500 3.5L I-5 (L52) Spec Sheet" (PDF). Archived from the original (PDF) on 2016-01-09. <a href="https://web.archive.org/web/20160109064824/http://archives.media.gm.com/us/powertrain/en/product_services/2006/Spec%20Sheets/Line%20456/2006%20Line%20I5%20Truck%20(L52).pdf" target="_blank">https://web.archive.org/web/20160109064824/http://archives.media.gm.com/us/powertrain/en/product_services/2006/Spec%20Sheets/Line%20456/2006%20Line%20I5%20Truck%20(L52).pdf</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>2007 LLV Spec Sheet <a href="https://web.archive.org/web/20160109064824/https://archives.media.gm.com/us/powertrain/en/product_services/2007/Spec%20Sheet/Line%20456/2007_LLV.xls" target="_blank">https://web.archive.org/web/20160109064824/https://archives.media.gm.com/us/powertrain/en/product_services/2007/Spec%20Sheet/Line%20456/2007_LLV.xls</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>"2006 Vortec 2800 2.8L I-4 (LK5)" (PDF). Archived from the original (PDF) on 2016-01-09. <a href="https://web.archive.org/web/20160109064824/http://archives.media.gm.com/us/powertrain/en/product_services/2006/Spec%20Sheets/Line%20456/2006%20Line%20I4%20Truck%20(LK5).pdf" target="_blank">https://web.archive.org/web/20160109064824/http://archives.media.gm.com/us/powertrain/en/product_services/2006/Spec%20Sheets/Line%20456/2006%20Line%20I4%20Truck%20(LK5).pdf</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> </ol>