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 1969-Up 302-305-327-350 S/B Chevy.

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 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.

Charts

H-Series Features (JPG)

Guides & Documents

Crankshaft Main Bearings Technical Information (757M909H)

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.

CARB warning

Specifications

KEY SPECS
MFG. Part #	Select Size to see
Brand	Clevite

GENERAL
Sold in Quantity	Each
GTIN Code	Select Size to see

Ratings & Reviews

4.8

5 Reviews

Overall Assessment

Customers highly appreciate the product, especially for its high quality and practicality in use. It fits perfectly on the block and crankshaft, ensuring smooth and drag-free operation for racing motors. Users noted the product's reliable performance across multiple builds, emphasizing its excellent usability. The superior material quality is another highlighted feature, contributing to the long-lasting functionality and strong performance of the customers' motors. Clients have recommended these bearings over competitor's due to its impressive quality relative to cost.

Write A Review

4.8

5 reviews

Filter by Ratings

Sort Reviews

Great bearings

5.0

9 months ago

Matt

Kentucky

Verified

Checked after full race season and still look great.

Would Recommend

Would I buy this again?

5.0

4 years ago

Rockin Robin

Redfield SD

Verified

I definitely would buy this product again. I use these in my race motor for my wissota super stock. These bearing fit the block with ease and fit the crankshaft very well. The crankshaft spins over very easily with no drag. I am very pleased with these parts and the motor is running strong.

Would Recommend

Yes

5.0

5 years ago

Fat rod

Wausaukee wi

Verified

Everything good

Would Not Recommend

Excellent Product

5.0

8 years ago

Farm Truck

Midlothian, VA

Verified

Excellent product and service. Have used these bearings in multiple builds with no issues.

Would Recommend

quality part at a good price

4.0

11 years ago

anton

papillion Nebraska

Verified

Clevite quality at a good price

Would Recommend

Showing 5 of 5 reviews

Questions & Answers

3 Questions • 3 Answers

Sort Questions

What is the inside diameter measurement. For the standard size bearings

by Dusty

• 9 years ago

1 answer

View Answer

what are xstd bearings? How are they different from std.

by Terry

• 10 years ago

1 answer

View Answer

part details will these fit and original dz 302 1969 small journal crank? need to know asap

by CampbellRacing

• 11 years ago

1 answer

View Answer

3 of 3 questions shown