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ACL 5M1038H H-Series Main Bearings Small Block Chevy 400

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ACL H-Series Duraglide tri-metal main bearings for S/B Chevy 400 c.i. V-8.

  • 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.

 

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Clevite H-Series Chevy 400 Main Bearings
                        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 for 1970-1980 S/B Chevy 400 c.i. V-8 engines.   
  • 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.

H-Series Features (Link)

ACL H-Series Rod Bearings Small Block Chevy Large Journal
                        ACL H-Series Duraglide bearings feature a tri-metal design. Fits S/B Chevy 350/400 with Large Journal crankshafts (2.100").
  • 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.
ACL 5C3349C H-Series Small Block Chevy Cam Bearings
                        

ACL tri-metal H-Series Duraglide camshaft bearings for S/B Chevy. Standard size only.

  • 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.