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ACL Chevrolet V8 265-283-302-327 Race Series Engine Crankshaft Main Bearing Set

SKU: ACL5M429HX-STD

Main Bearings

ACL Race Series Main Bearings...

Acl

Acl

ACL Chevrolet V8 265-283-302-327 Race Series Engine Crankshaft Main Bearing Set

SKU: ACL5M429HX-STD

Main Bearings

ACL Race Series Main Bearings...

A$291.84
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

ACL Chevrolet V8 265-283-302-327 Race Series Engine Crankshaft Main Bearing Set

Product Overview

The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings.

Designed to withstand higher RPM conditions, ACL Race Series Connecting Rod Bearings are available for many of the popular 4, 6 & 8 cylinder applications and feature:
• *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.


Data: v2 - Desc: v4.2 - Upd: 2026-11-07 15:30:00

Data: v4.2 - Upd: 2026-11-07 17:18:55

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Description:Chevrolet 327ci (5.4L) Small Pin V8 OHV 2v
Grade Type:Performance
Max Overall Length:0.807" (20.49mm) w/ 2372H/HX 1.718" (43.64mm) w/ 7104H/HX Flange
Max Std Shaft Size:2.2993" (58.402mm)
Max Std Tunnel Size:2.4916" (63.287mm)
Max Wall at Crown:0.0949" (2.410mm)
Max Wall:0.0949
Min Std Shaft Size:2.2983" (58.377mm)
Min Std Tunnel Size:2.4906" (63.261mm)
Oil Clearance:+ 0.001" Extra
Outside Diameter:2.4906
Part Number:acl5M429HX-STD
Shaft Diameter:2.2983
Size:Standard
Width:0.807

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Acl, ACL BEARINGS, Acl Race Series Performance Engine Bearings
StreetFX SKU acl5M429HX-STD
SFX Item ID 4074193
Accounting SKU acl-5M429HX-STD
Manufacturer SKU 5M429HX-STD
Manufacturer UPC N/A
Alternative References PEB-5M429HX-STD

ChevroletSmall Block Small Pin - 2.000" 265, 283, 302, 327 ci V8Tri-Metal - STD - Extra .001" oil clearance

ACL Performance Race Series main bearing sets deliver everything performance bearings should be by utilizing design, metallurgy, engineering, precision quality control, and of course, years of knowledge and experience.

Main bearings feature multi-layered tri-metal copper alloy construction that blends characteristics to provide high strength and excellent seizure resistance. They are manufactured to exact tolerances ensuring a reliable fit and helping to maintain consistent clearances. Main bearings are augmented with extended grooves, as well as other bearing enhancements, like increased crush, bearing eccentricity, and enlarged I.D. chamfers.

ACL Performance Race Series main bearing sets are produced in standard and extra clearance versions, with or without friction reducer coating, and with modifications to meet specific build requirements, such as narrowed bearings that permit additional edge clearance when running crankshafts with exceptionally large fillet radii.

In the heat of competition proven technology always comes through. The choice for your build should always be ACL Performance Race Series engine bearings. Choose the main bearing set designed for your vehicle.

Product Attributes
BrandACL Race Series Performance Engine Bearings
Manufacturer's Part Number5M429HX-STD
Part TypeMain Bearings
Product LineACL Performance Race Series Main Bearing Sets
UPC9315726187708
Bearing UsagePerformance
Engine Crankshaft Undersize (in.)Stock
Engine Crankshaft Undersize (mm)Stock
Grooved BearingYes
Groove LocationUpper and lower
Groove Style3/4
Thrust Bearing OversizeStock
Bearing MaterialTri-metal copper-lead alloy
QuantitySold as a set of 5.
Notes.0005 in. thinner wall bearing for .001 in. extra oil clearance.

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