Aluminum LS Engine L33 5.3 243 Heads, Diamond Forged Pistons, Bullet Racing Cam

$6,950.00
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Aluminum LS Engine L33 5.3 243 Heads, Diamond Forged Pistons, Bullet Racing Cam

  • GM L33 Aluminum 5.3 LS V8 engine built by Philadelphia Racing Engines for street, race, all around high performance use
  • This engine has not been on a dyno, however this camshaft combination has been tested in a 5.3L and produced 442 horsepower at 6,200 rpm and 412 lb-ft of torque at 5,000 rpm
  • Compression is 10.2 to 1, higher than the stock 9.9 to 1, so performance should be slightly higher  
  • 80 pounds lighter than a cast iron block LS engine!
  • Stock crankshaft machined .010 main bearings, .010 rod bearings, 24x reluctor
  • 243 Casting Cylinder heads machined with 2.0 intake valves, 1.55 exhaust valves, 64.45cc chambers
  • Pistons: Diamond forged, 11592R1
  • Bore 3.780", Stroke 3.622", Rod 6.098"
  • Compression distance: 1.331"
  • 400 grams
  • -2.0cc valve reliefs
  • 10.2 compression
  • 3D milling on piston crowns
  • Offset pins for quiet operation
  • 1.0mm x 1.2mm x 2.8mm ring package
  • Side gas ports for better ring seal
  • Top ring down dimension: .250"
  • Premium 8620 .945 x 2.500 .185 wall wrist pins
  • Moly skirt coating for friction loss and skirt wear protection
  • Valve pocket depth: 0.176" intake and .103" exhaust
  • Piston to Valve Clearance: Intake Clearance: .150, Exhaust Clearance: .200  
  • Piston rings
  • Diamond Top -.0405 Sec.- .0475 Oil - .1120
  • Piston ring end gap: Top .015, 2nd: .022, Oil - standard tension
  • Camshaft
  • Bullet Racing Hydraulic Roller
  • CLS 273/281-12HL
  • Duration at .050: 223 / 231
  • Lobe Lift: .361 / .363
  • Valve Lift: .614 / .617
  • Lobe Separation: 112
  • Camshaft degree: 109
  • Valve Springs: Pac 120 pounds on valve seat
  • Timing chain: Rollmaster single roller
  • Head gasket: Victor MLS
  • Bearings:
  • Main – MS2199p .010 #1-.0018, #2-.002, #3-.002, #4-.0018, #5-.0022
  • Rods- CB663p .010 #1-.002, #2-.002, #3-.0025, #4-.0022, #5-.0022, #6-.0025, #7.0025, #8-.0025

*** IMPORTANT: This engine ships from the builder in Philadelphia, Pennsylvania ***


*** Please ask any application or usage questions before purchase, we are happy to help! ***

LS engines in the same family as this L33 include 

  • LS1, LS2, LS3, LS6, LS7, LM7, LQ4, LQ9, L76, L92, L98, L99, LSA, LT1, LT4 4.8, 5.3, 5.7, 6.0, 6.2 7.0 liter V8
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