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Manley Performance Big Block Chevrolet Severe Duty "Pro Flo" Valves Stock 3/8" Stem Diam
Manley Performance Big Block Chevrolet Severe Duty "Pro Flo" Valves Stock 3/8" Stem Diam
sku: 11B3B | mpn: 11831-8
Regular price
$374.80
Regular price
$374.80
Sale price
$374.80
Shipping calculated at checkout.
Out of stock
Emissions
This is not an emissions item.
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- Easy Returns
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Severe Duty "Pro Flo" Valves Stock 3/8" Stem Diameters
- XH-428 Stainless Exhaust Material
- Improved Flow with "Pro Flo" Underhead
- Chrome Stems and Hard Tips
- Swirl Polished and Fully Machined
Specs:
Type: Exhaust
Head Diameter: 1.880
Stem Diameter: .3715
Installed Height: Stock
O/A Length: 5.374
Tip Length: .220
Underhead Angle/Radius: Pro Flo: 10° x 3/8"
Margin: .085
Seat Width: .100
Top of Head: 5° Dish
Weight/ Grams: 132
Set of 8
