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Valve Spring Warning

ATTENTION: Valve Spring Warning for All Packages

On all complete assembly packages, it is very possible that the valve springs are not correct for your camshaft. All valve springs should be checked for compatibility to your camshaft. Severe wear of valve train components and severe engine damage could result from failure to do this. Check spring requirements before heads are installed on the engine. If in doubt please contact your camshaft manufacturer or USA Performance Parts. We do carry optional springs for all of your needs.
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Dart PRO 1 Aluminum Small Blocks Ford Cylinder Heads 170 Port Volume, each $498.00
Dart's Ford Pro 1 Cylinder Heads are cast from the same virgin 355-T6 aircraft alloy that is used in Dart Pro-Stock heads. These Windsor style heads are available with high flowing as-cast ports. Standard valve angle and spacing is retained for bolt-on compatability. Exhaust runners are raised 0.135" for improved flow. The exhaust flange uses the standard pattern on as-cast heads. As cast heads are bowl blended on 5-axis machining centers. Manganese bronze valve guides are used for long life, and hardened valve seats provide durability with unleaded fuels. Whether you’re building a mild street engine or a big inch fire breather, Dart heads will give you a performance advantage!

For a Flow Chart click here.

Part NumberDescriptionPort Vol.Cham. Vol.PlugInt/Exh ValvesSpring Dia.PriceIn stockPurchase
13100080 Bare, pr17062AP1.94/1.50N/A$498.00Yes
13111181 Assembly17062AP1.94/1.501.250S$629.00Yes
13111182 Assembly17062AP1.94/1.501.437D$689.00Yes

For Technical Information please click here.

To view this product's Specifications page, please click here.

 
This product was added to our catalog on Monday 21 March, 2005.
 
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