Free shipping on orders over $100 Details
Flowtech Ram Horn Exhaust ManifoldsYouTube Button

Flowtech Rams Horn Exhaust Manifolds - Natural "Uncoated"

Small Block Chevy Rams Horn Exhaust Manifolds; 1-5/8" primary diameter; 2-1/4" Collector; Natural "Uncoated"

PART# 11704-RFLT

Be the first to write a review
$268.00   Suggested Retail
$240.95   Your Price
Estimated shipping date: 11/06/2020
Email Me When Available
Free Shipping
Add to Wish List


Flowtech exhaust manifolds are the perfect combination of quality and value. These Rams horn exhaust manifolds fit all popular hot rods with the popular small block Chevy engine.


  • 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 2-1/4” collector for maximum strength
  • Thick manifold flange pads for a leak-free seal and maximum strength
  • Premium aluminum manifold gaskets and collector hardware is included
  • This manifold is raw "uncoated" so it is perfect to paint match or coat to match engine or body design
  • Sold as a pair


Collector Diameter2.25 inch
Emission Code4
EngineChevrolet Small Block Gen I
Flange StyleSquare Port
Gaskets IncludedYes
Hardware IncludedYes
Header FinishNatural
Header StyleRam Horn
Pack QtyPair
Primary Tube Dia.1-5/8 inch
Product TypeManifold
Tube Diameter1.625"
Tube MaterialCast Iron
Part Number11704-RFLT



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Tech Resources

Manifold to head bolts not included. Header Dimensions:
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"
We Suggest
    Also Bought

        *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

        Some parts are not legal for use in California or other states with similar regulations.

         X  2020 Hemi Engine Sweepstakes
         X  2020 Hemi Engine Sweepstakes