Clevite's H-Series was developed primarily for use in NASCAR type racing, but they are suitable for all types of competition engines. These sets are specifically for 1955-1969 265-283-302-327 S/B Chevy "small journal" engine (with 2.000" rod journals).

H-Series bearings should be used if contact patterns obtained with P-series parts are too narrow. Contact pattern should ideally cover 2/3 to 3/4 of the bearing surface.
If you aren't sure which type of performance bearing to start with, the H-Series will be your best choice.
The X001 option gives you .001" extra oil clearance

Charts

H-Series Features (JPG)

Clevite Application Chart (GIF)

Guides & Documents

Connecting Rod Bearings Technical Information (757R745H)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Specifications

KEY SPECS
MFG. Part #	Select Size to see
Brand	Clevite
Rod Journal Diameter	2.000"
Bearing Construction	Tri-metal
Bearing Undersize	Select Size to see
Narrowed Bearing	Select Size to see

GENERAL
Sold in Quantity	Set
Notes	Some “H” series bearings will no longer be available with enlarged chamfers as photos may show. Instead, the bearings will be narrowed in place of the enlarged chamfer to provide greater crankshaft fillet clearance. The new narrowed bearings have a “HN”suffix at the end of the MFG part number and will be replacing the standard “H” suffix part number.

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