ACL Race Series Rod Bearings Small Block Chev Quad 4, 1.889"

ACL Race Series Rod Bearings Small Block Chev Quad 4, 1.889"

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ACL Race Series Rod Bearings Small Block Chev Quad 4, 1.889"

CONROD BEARING - STD, 001, 010
  • High performance Trimetal engine bearings
  • Designed to withstand higher RPM conditions
  • High strength overlay plate with reduced thickness for improved fatigue properties

8B1663H-STD, 8B1663H-001, 8B1663H-010 8B1663HX-STD

Specifications for STD size only

Sizes STD, 001, 010
Oil Clearance
Half Type Upper & lower
Material F781
Min. Std Shaft Size 47,968 mm / 1.8885 in
Max. Std Shaft Size 47,981 mm / 1.8890 in
Min. Std Tunnel Size 51,181 mm / 2.0150 in
Max. Std Tunnel Size 51,194 mm / 2.0155 in
Max Wall at Crown 1,588 mm / 0.0625 in
Max Overall Length
20,12 mm / 0.7921 in
Notes
Diagrams
7000H-L
7000H-L
7000H-U
7000H-U

 

  • HIGH STRENGTH OVERLAY PLATE with reduced thickness for improved fatigue properties
  • HARDENED STEEL BACKS on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
  • INCREASED CRUSH for improved bearing retention
  • ELIMINATION OF FLASH PLATING on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.
  • INCREASED ECCENTRICITY to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
  • 3/4 GROOVED MAIN BEARINGS to optimize bearing load carrying surface area and oil flow to the conrod bearings.
  • TIGHT CONSISTENT WALL TOLERANCES to help you maintain consistent clearances.
  • ENLARGED ID CHAMFERS on bearing edges where required to accommodate large fillet radius on performance crankshafts.