What are the product specifications of 8300?

Product Description: 1973-91 Chevrolet / GMC Small Block Without Smog Pump Ceramic Coated Tri-Y Design Doug'S Headers


  • 1-5/8" - 2" tube diameter with 2-1/2" collector  diameter and oval port
  • Will not fit manual transmission with column shift
  • Fits D-Port cylinder heads including ZZ4 crate engines
  • Will fit most angle plug he ads including factory Chevrolet "Bow Tie" heads
  • May require left side A/C bracket part # 7608 (sold separately). 1979 and later vehicles with short compressors can use the stock bracket.
  • Tri-Y design
  • Available with optional smog pump provision. Dual smog pump applications add "D" to the end of header part number. Single smog pump applications add "S" to end of the
    header part number.
  • Emission Notes: This product is legal only for off-highway use (except in California or states that have adopted California emission standards), racing use or for use on pre-emission-controlled motor vehicles/motor vehicle engines (pre-1974 domestic vehicles certified to California standards, pre-1974 domestic vehicles certified to federal standards and all pre-1974 foreign vehicles), per the manufacturer's application guide.