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Manley 11666HB-8 Race Flo Hollow Stem Intake Valves 2.020 HEMI 5.7L

Manufacturer

Picture for manufacturer Manley

Part Number

11666HB-8
6 reviews
Sale Price

$564.30

Estimated ship date Tuesday, November 17

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Product Details

Featuring a 2.020-inch head diameter, 0.3125-inch hollow stem diameter, and a 4.955-inch overall length at stock installed height, these valves are a direct-fit upgrade for high-performance street, bracket racing, drag racing, and oval track applications.

The hollow stem design reduces reciprocating valve train mass, allowing for more aggressive cam profiles and improved high-RPM stability compared to solid stem counterparts. These valves are built to the same Race Series standard as the rest of Manley's HEMI valve lineup, making them ideal for engines operating under 8,000 RPM.

Key Features:

  • NK-842 Stainless Steel Construction — Premium intake valve material for exceptional strength and corrosion resistance
  • Hollow Stem Design — Reduces valve train weight for improved high-RPM performance and response
  • Race Flo (Pro Flo) Underhead Profile — Reduces stem diameter in the fillet area to optimize airflow and reduce valve mass
  • Chrome Stems and Hard Tips — Enhance wear resistance and extend service life
  • Swirl Polished Under-Head Areas — Optimizes airflow into the combustion chamber
  • Fully Machined Combustion Faces — Ensures consistent seating and combustion efficiency
  • Triple Groove Keeper Design — Compatible with Chrysler/Dodge 5.7L HEMI through 2008
  • Bead Loc® Keeper Grooves — Requires Manley Bead Loc® valve locks (use valve lock P/N 13093-16)

Specifications:

  • Head Diameter: 2.020 in.
  • Stem Diameter: 0.3125 in. (Hollow)
  • Overall Length: 4.955 in.
  • Installed Height: Stock
  • Valve Type: Intake
  • Material: NK-842 Stainless Steel

Note: Bead Loc® valve locks are required — use Manley part number 13093-16. Verify valve guide sizing prior to installation, as machine work may be required to achieve proper stem-to-guide clearance.

Very easy to order. Thank you

you have the best price I will be back for running boards

Very easy to find items by part numbers. Thanks

Fast Shipping. Good packaging. Very good pricing. Will shop from again.

After searching for the best prices for the product that I wanted, I ended up with Autoplicity. I quickly got a response that my product has just been shipped and I am very impressed that Autoplicity is giving me an incentive to write a review on them. This tells me that this company is very concerned with the satisfaction of their customers. I am currently waiting for the order to arrive, but so far, I am extremely confident and happy with Autoplicity!

no problem's very good

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