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LG8 3100 Competition Series Lower Intake

LG8 3100 Competition Series Lower Intake

Product Information

The WOT-Tech Competition Series represents the best of what we have to offer, with fully ported runners and the best runner taper and port texture available anywhere. Flowbench designed as a complete system from head to throttle body for the best performance at any level when combined with the Competition Series upper.  Compatible with stock and sportsman uppers as well.  This version of the lower intake incorporates some "tricks" for improved flow and velocity that you won't find in the sportsman porting, or anywhere else.

Cleaned, ported, painted and ready to install
The runners are completely ported and blended from top to bottom for a consistant surface.
This first transition is one of the most important aspects, setting up the injector boss area for the most flow without hogging everything else out to compensate.
The exit to the cylinder heads are important for the air/fuel mixture. Varying texture and reshaping in some areas are unique to our competition series.

ATTN 94-99 L82 Owners!  Your heater return coolant line connection to the lower intake is a threaded adapter, not a press in setup like these newer manifolds.  You will need to either get the press in tube, or select the option for threading the manifold.

IMPORTANT!  If you have a 1994 or 1995 3100, your lower intake manifold will need to be modified to clear the stamped steel rocker arms.  If you have a 1996 3100, please check your rocker arms to verify yours are roller fulcrum rockers.  There is a $40 charge to setup the test engine and clearance for your stamped rockers (select no to roller rockers).  For more information, please read this article.

ALSO! Please select the 94-99 Large Port Gasket option (which is based on the 94-99 FelPro set that does NOT include the new lower intake manifold bolts with thread locker.  You will need to clean your bolts and apply a thread locker to keep them from loosening up and creating a gasket leak in the future.

Lastly If you have a 94-95 3100 and are upgrading to these large port mainfolds, you will need to say No to the Roller Rocker tab so that the manifold will be clearanced. 

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Price: $134.99


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Roller Rockers?
Threaded Heater Return?

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Additional Information

Product Code: 3100CompLower
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