Product Summary

Universal Fit, Raw Machined, Gasket(s) Included

    Key Specs

    MFG. Part #11704-RFLT
    BrandFlowtech Exhaust
    FinishRaw Machined
    Collector Diameter2-1/4 Inch

    Need To Know

    This Product Will Ship Free

    Shipping Policies & FAQs

    Quick and Easy Returns

    Return Policy

    Flowtech Exhaust 11704-RFLT Details

    Flowtech exhaust manifolds are the perfect combination of quality and value. This Rams horn exhaust manifold fits all popular hot rods with the popular small block Chevy motor.

    • Tight fit block hugger design for popular hot rod and street rods powered by the popular small block Chevy motors
    • Cast iron construction styled in the vintage Rams Horn design for maximum engine clearance and maximum strength
    • Smooth transition, 1-5/8 diameter primaries are used for increased exhaust flow increasing performance and improving throttle response
    • 3/8 thick 2-1/2 collector for maximum strength
    • Thick header flange pads for a leak-free seal and maximum strength
    • Premium aluminum header gaskets are included
    • Thjis manifold is raw "uncoated" so it is perfect to paint match or coat to match engine or body design

    Note: Hardware to mount the manifolds to the heads is NOT included.



    • Width of Header at widest point from exhaust flange- 3.823"
    •  Height of Header from highest to lowest point - 7.13"
    •  Length of Header from leading edge to trailing edge - 18.623"
    •  Cylinder Head surface to outside point - 3.52"
    •  Bolt center to top of manifold - 3.51"
    •  Manifold bolt center to bottom of collector - 5.50"
    •  Collector mounting bolt circle center to center - 3.031"

    CARB Warning

    For race/ off road use only

    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. 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.

    Flowtech Exhaust 11704-RFLT Specifications

    MFG. Part #11704-RFLT
    BrandFlowtech Exhaust
    FinishRaw Machined
    Collector Diameter2-1/4 Inch
    Gasket(s) IncludedYes
    Hardware IncludedNo
    Sold in QuantityPair
    Emission Code3
    GTIN Code090127690758