What is the purpose of this valley cover?

This Edelbrock valley cover is designed for GM Gen III LS-series engines that have been converted from EFI to a carburetor. It replaces the stock valley cover and eliminates the knock sensor bosses, which are no longer needed in a carbureted setup. This provides a cleaner look.

What if I want to retain the stock LS-6 breather configuration?

The Edelbrock valley cover includes a breather boss that can be drilled and tapped to retain the stock LS-6 breather configuration. LS-1 users can also convert to the LS-6 style by drilling and tapping this boss. Refer to manufacturer instructions for proper procedure.

Is any hardware included with this valley cover?

The manufacturer does not specify if any hardware is included with the valley cover. You may need to source bolts or gaskets separately for installation. Refer to the manufacturer's installation guide for specific hardware requirements.

Edelbrock Valley Cover GM Gen IIi Ls-Series (No Knock Sensor Bosses)

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Specifications

Brand: Edelbrock
Part #: 7788
UPC: 85347077885

Edelbrock Valley Cover GM Gen IIi Ls-Series (No Knock Sensor Bosses)

Name: Edelbrock Valley Cover GM Gen IIi Ls-Series (No Knock Sensor Bosses)
Brand: Edelbrock
Price: 219.89 USD
Availability: InStock

$219.89

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Valley cover plate for Gen III LS engines converted from EFI to carburetor. Eliminates unneeded knock sensor bosses.

Key Features

Eliminates knock sensor bosses — cleaner look for converted engines
Sand-cast aluminum — well-made and lightweight
Breather boss included — can be drilled and tapped for LS-6 style breather

Fits Chevrolet Gen III LS1/LS6 346 (5.7L) engines. This valley cover is not compatible with LS2, LS7, LSX, or any other GM Gen IV engines.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Edelbrock part #7788 is a Valley Cover Plate intended for use on 1997-2004 GM LS1/LS6 Engines and similar GM Gen III Engines that have been converted from EFI to Carbureted set ups. The main feature of this part is that it is absent of the knock sensor bosses contained on the stock piece which become no longer necessary when switching to a carburetor. The casting will offer a breather boss that will need to be drilled and tapped by those retaining the stock LS-6 breather configuration or for LS-1 users looking to convert to an LS-6 style. It is to be a sand cast part and will be offered in a natural aluminum finish. Note that piece will not work with LS2, LS7, LSX or any other GM GEN IV engines.