ACL Race Series Main Bearings Suit Small Block Chevrolet Large Journal ~ Standard
ACL Race Series Main Bearings Suit Small Block Chevrolet Large Journal ~ Standard
ACL Race Series Main Bearings Suit Small Block Chevrolet Large Journal ~ Standard
ACL Race Series Main Bearings Suit Small Block Chevrolet Large Journal ~ Standard
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ACL Race Series Main Bearings Suit Small Block Chevrolet Large Journal ~ Standard

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ACL RACE MAIN BEARING SBC LARGE JOURNAL

MAIN BEARING - STD - STANDARD CLEARANCE SET
  • High performance Trimetal engine bearings
  • Designed to withstand higher RPM conditions
  • High strength overlay plate with reduced thickness for improved fatigue properties

5M909H-STD

Specifications for STD size only

Sizes STD, 001, 009, 010, 011, 020
Oil Clearance
Half Type Upper & lower
Material F780
Min. Std Shaft Size 62,189 mm / 2.4484 in
Max. Std Shaft Size 62,212 mm / 2.4493 in
Min. Std Tunnel Size 67,071 mm / 2.6406 in
Max. Std Tunnel Size 67,097 mm / 2.6416 in
Max Wall at Crown 2,423 mm / 0.0954 in
Max Overall Length
20,5 mm / 0.8071 in (2377H)
43,64 mm / 1.7181 in (2378H(F))
Notes
Diagrams
2377H-L (1,2,3,4)
2377H-L
2377H-U (1,2,3,4)
2377H-U
2378H-L (5)
2378H-L
2378H-U (5)
2378H-U

Overview:
  • 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.

Applications:

Make
Engine
Description
Vehicles
Chevrolet 262 V8 Chevrolet 262ci (4.3L) V8 OHV 2v
Chevrolet 265ci L99 Chevrolet 265ci (4.3L) L99 V8 OHV 2v
Chevrolet 267 Chevrolet 267ci (4.4L) V8 OHV 2v
Chevrolet 302ci Large Pin Chevrolet 302ci (5.0L) Large Pin V8 OHV 2v
Chevrolet 305 Chevrolet 305ci (5.0L) V8 OHV 2v
Chevrolet 307 Chevrolet 307ci (5.0L) V8 OHV 2v Holden HK
Chevrolet 327ci Large Pin Chevrolet 327ci (5.4L) Large Pin V8 OHV 2v
Chevrolet 350 Chevrolet 350ci (5.7L) V8 OHV 2v Holden HG
Chevrolet 350 Vortec Chevrolet 350ci (5.7L) Vortec V8 OHV 2v Holden Suburban