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ACL Bearings 8B663HN-STD Race Series Narrowed Rod Bearing Set

Manufacturer

Picture for manufacturer ACL Bearings

Part Number

8B663HN-STD
5 reviews
Sale Price

$102.04

Estimated ship date Saturday, November 28

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Product Details

The ACL Bearings 8B663HN-STD is a high-performance narrowed connecting rod bearing set engineered for Chevrolet Small Block and LS engine applications. Part of ACL's Race Series lineup, these tri-metal bearings are specifically designed to withstand extreme high-RPM conditions and harsh operating environments found in racing and high-performance builds.

Key Features:

  • Narrowed design accommodates large fillet radius performance crankshafts (typically 0.125" radius)
  • High-strength overlay plate with reduced thickness for improved fatigue resistance
  • Hardened steel backing on rod bearings for enhanced bearing retention and lining support
  • Increased crush for superior bearing retention in the housing
  • Increased eccentricity compensates for bore distortion at high RPM operation
  • Elimination of flash plating on bearing backs improves heat transfer and maximizes grip
  • Tight wall thickness tolerances ensure consistent clearances and reliable fit
  • Enlarged ID chamfers accommodate large fillet radius on performance crankshafts
  • Standard size bearing for 2.099-2.100" (53.315-53.340mm) crankshaft journals

Technical Specifications:

  • Bearing Size: Standard (STD)
  • Shaft Diameter: 2.0990-2.1000" (53.315-53.340mm)
  • Tunnel Diameter: 2.2247-2.2252" (56.507-56.520mm)
  • Bearing Material: F781 tri-metal construction
  • Overall Length: 0.836" (21.25mm)

Applications:

Compatible with Chevrolet Small Block (262-400ci) and GM LS/LQ series engines including: 283, 305, 307, 327, 350, 383, 400, 4.8L (LY2), 5.3L (LM7), 5.7L (LS1, LS6), 6.0L (LS2, L76, L77, L98, LFA), 6.2L (LS3, LS9, LSA, LT1), 6.6L (L8T), 7.0L (LS7), and LSX performance variants. Also compatible with Ford Small Block Cleveland 302, 351, and 393 engines.

ACL Race Series bearings are trusted by engine builders worldwide and serve as OEM components. These bearings deliver championship-winning performance from sport compact drift racing to NASCAR, IHRA, and NHRA competition. Ideal for stroker builds, forced induction applications, and any high-performance engine requiring maximum bearing durability and reliability.

Good

I was hesitant about buying the product because it was almost a $100 cheaper than a couple other websites. I went ahead and did it and couldn't believe when I got it the next day. I did pay a little extra for shipping but it was totally worth it.

I have an Instagram at @hawkfactor with almost 40k followers, I wanted to s/o my experience but couldn't find you on Instagram. Thanks again for 5star service and the best price.! -Royal Scott

One part I was looking at contained "rebuild-part" in the URL but there was nothing on the page about new or rebuilt so I'm not buying that part.

Amazing, showed up fast and was an easy install!

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