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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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Pro1 LS1 Cylinder Heads 205 & 225 Port Volume Bare, each $479.50
Dart's LS1 "as cast" heads flow as much as fully ported heads at a fraction of the cost. They come bowl blended and competition valve jobbed for use right out of the box. Flowing 298 cfm (205cc runner - 2.02 valves) and 313 cfm (225cc runner - 2.055 valves) at .600" lift this set of heads give True Bolt-on horsepower.

Click here for a Flow Chart.

For ASSEMBLIES click here.

Part NumberDescriptionPort Vol.Cham. Vol.Int/Exh ValvesHead TypePriceIn stockPurchase
11010010 Bare Casting205622.02/1.60LS1$479.50Yes
11020020 Bare Casting225622.05/1.60LS1$479.50Yes

For Technical Information please click here.

This product was added to our catalog on Sunday 02 October, 2005.
 
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