Manley Performance 1.810 Head Diameter / 4.908 OA Length Race Flo Exhaust Valves – Set of 8 | Multiple Fitments (11891-8) Manley Performance

Chrysler 361 – 383 – 426 Wedge – 440 Race Flo Exhaust Valves – Set of 8 by Manley Performance

Race Master, and the Pro Flo versions identified as Race Flo valves, are manufactured of XH-426 material for the exhausts and NK-842 for the intakes. This series of valves is targeted at the bracket, drag and oval track racers operating below 8000 rpm – above which engine speed titanium valves are generally required.

Any engine builder successfully using EV-8 alloy ( 21-4N ) valves will find in this series of Manley valves a superior piece at a most attractive price. The Ultimate Tensile Strength charts on this page and the next, show the Manley Race Series to be equal to the best that the competitors have to offer.

Features

• Head Diameter: 1.810″
• Stem Diameter: .3720”
• Installed Height: Stock
• O/A Length: 4.908″
• Tip Length: .275″
• Underhead Angle/Radius: Pro Flo 10° x 3/8”
• Margin: .085″
• Seat Width: .100”
• Top Of Head: 5° Dish
• Chrome Stems and Hard Tips
• Swirl Polished and Fully Machined
• XH-426 Stainless Exhaust Material

Benefits

• Best for drag and oval track racers operating below 8000 rpm – above which engine speed titanium valves are generally required
• Equal to the best that the competitors have to offer.
• Up to 40% flow increase in small port OE style cylinder heads
• Proven performance improvement on the flow bench

Please Note: The image provided is generic and may not be an accurate representation of the product you will receive

Applications

• 1966 Dodge Charger
• 1965–1971 Dodge Monaco
• 1965–1971 Dodge Coronet
• 1967-1971 Dodge Charger
• 1970-1971 Dodge Challenger
• 1967–1969 Dodge Dart
• 1960–1971 Dodge Polara
• 1968-1971 Dodge Super Bee
• 1967–1971 Plymouth Barracuda
• 1960–1971 Plymouth Savoy
• 1960-1971 Plymouth Belvedere
• 1960–1971 Plymouth Fury
• 1968–1971 Plymouth Road Runner
• 1965–1971 Plymouth Satellite
• Plymouth GTX
• Plymouth Superbird
• Chrysler 300 letter series
• Chrysler 300 non-letter series

What’s In The Box?

• 8 – Valves

Warranty

• Manley products, due to their intended use, are sold without warranty.