Product Summary

Chevy Small Block V8, Chevy Big Block V8

  • Designed to fit all 1955-1986 Chevy V8's
  • Lifter body has a diameter that measures 0.842"
  • Using these lifters will provide 2-3" of vacuum under 1500 RPM
  • Will bleed down slightly at idle and lower RPM and causing a reduction in valve duration of approximately 10° to 15°
  • Provides approximately 25% more low-end horsepower

Key Specs

MFG. Part #8178
BrandRhoads Lifters

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It's not uncommon to pick up 2-3" of vacuum under 1500 RPM just by using these lifters. Normally see 25% or more increase in low-end horsepower for performance hydraulic cams.

Lifters bleed down slightly at idle and lower RPM, causing a reduction in valve duration of approximately 10° to 15°, and reducing valve lift .020" to .030" at idle.

Set of 16. All 1955-86 Chevy V8.


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.


MFG. Part #8178
BrandRhoads Lifters
Lifter TypeHydraulic Flat Tappet
Lifter Body Diameter0.842"
Sold in QuantitySet