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FlowTech Rams Horn Exhaust Manifold 11704-2FLT

FlowTech Rams Horn Exhaust Manifold 11704-2FLT
FlowTech Rams Horn Exhaust Manifold 11704-2FLTFlowTech Rams Horn Exhaust Manifold 11704-2FLTFlowTech Rams Horn Exhaust Manifold 11704-2FLTFlowTech Rams Horn Exhaust Manifold 11704-2FLT
$693.99 ea
NEWARRIVING SOONEstimated Ship Date 10/16/2023 (If Ordered Today)13 available from HOLLEY PERFORMANCE PRODUCTS as of 09/23/2023
Model: 4005953
Supplier has not provided any fitment data for this product.
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.
  • Cast Iron Construction
  • Increased Performance
  • Improves Throttle Response
  • Thick Header Flange Pads For Leak Free Seal
  • Premium Hardware/Gaskets
Holley Performance Emission Code 4: 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
Installation Notes:
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 hole center to center - 3.031"
About FlowTech

Flowtech Performance Exhaust was founded in 1994, by exhaust market expert Gary Biggs, with the mission of delivering high quality performance exhaust at a great value. The mission was successful and in less than two decades Flowtech became the leader in value priced exhaust systems.

Flowtech cornered its place in the market with aggressive and memorable product names such as Raptor™, Terminator™, Afterburner™ and Warlock™. Flowtech even revived some names from back in the day like Purple Hornies™.

Flowtech made its mark with simple yet effective improvements like slotted port flanges giving added wiggle room during header installation. They dimpled their tubes at the port to make more room for the header bolts and they parallel ground their flanges to assure a tight seal. Flowtech innovations include their unique Afterburner headers which separated the odd firing cylinders with a velocity tube to improve scavenging. Their patented Warlock bypass muffler won the SEMA best new product award for its revolutionary open or closed design in 1996.

When Flowtech became part of Holley Performance Products in 1999, the company continued to focus on value, with an emphasis on late model cars and trucks. Headers and exhaust systems were developed for Mustangs, Camaros, and all types of full size trucks - including diesels. The same innovation continues today with the addition of universal X-pipe kits and X-pipe kits with built in cut-outs. Continuous product updates and improvements to manufacturing processes will keep Flowtech the leader in value priced exhaust systems. We hope you enjoy your Flowtech product as much as we enjoy building it!



Collector Diameter 2.250 in.
Emission Code 4
Engine Chevrolet Small Block Gen I
Finish Chrome
Flange Style Square Port
Gasket Or Seal Included Yes
Gaskets Included Yes
Hardware Included Yes
Header Finish Chrome
Header Style Ram Horn
Material Steel
Mounting Hardware Included Yes
Pack Qty Pair
Part Type Exhaust Manifold
Position N/A
Primary Tube Dia. 1-5/8 inch
Tube Diameter 1.625"
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm


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FlowTech Rams Horn Exhaust Manifold 11704-2FLT:
Mustang Depot 2023