H-SERIES
Medium Eccentricity These bearings are identified by a letter H in the part number suffix. part numbering is based on the same core number as the standard passenger car parts for the same application. These bearings were developed primarily for use in NASCAR type racing but are suitable for all types of competition engines. H-Series bearings have a medium level of eccentricity, high crush and rod bearings have a hardened steel back and thin overlay. These bearings have enlarged chamfers for greater crankshaft fillet clearance and are made without flash plating for better seating. Bearings with .001” extra clearance are available for standard size shafts and carry the suffix HX (X=extra clearance). Rod bearings are available with or without dowel holes (HD=with, H=without), main bearings are available with standard 180degrees upper half grooving and with full 360 degrees grooving (H=180 degrees, HG=360 degrees). Use H-Series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range. H-Series bearings should be used if contact patterns obtained with P-Series parts are too narrow. Contact patterns should ideally cover 2/3 to 3/4 of the bearing surface.
Description	Part Number	Type
CHEV 283-327 S/J	CLMS429H	STD
CHEV 283-327 S/J	CLMS429H	010
CHEV 302-350 L/J	CLMS909H	STD
CHEV 302-350 L/J	CLMS909H	001
CHEV 302-350 L/J	CLMS909H	010
CHEV 302-350 L/J	CLMS909H	020
CHEV 302-350 +.001 L/J	CLMS909HX	STD
CHEV 400	CLMS1038H	STD
CHEV 400	CLMS1038H	010
CHEV 396-454	CLMS829H	STD
CHEV 396-454	CLMS829H	001
CHEV 396-454	CLMS829H	010
CHEV 396-454	CLMS829H	020
CHEV 396-454 +001	CLMS829HX	STD
FORD 289-302W	CLMS590H	STD
FORD 289-302W	CLMS590H	010
FORD 302-351C	CLMS1010H	STD
FORD 302-351C	CLMS1010H	001
FORD 302-351C	CLMS1010H	010
FORD 302-351C + 001	CLMS1010HX	STD
FORD 429-460	CLMS1039H	STD
FORD 429-460	CLMS1039H	010