LG8 3100 Sportsman Series Lower Intake

Product Information

Our Sportsman Series use the same port shapes as the competition, but with an emphasis on blending instead of completely reshaping the entire runner path. The first 2" is blended to the rest of the runner, top and bottom. 

	Cleaned, ported, and ready to install.
	Gasket Matched on top and blended to the of the runner.
	Bottom view of the same manifold. This end is not gasket matched, but rather port matched to the optimal shape for naturally aspirated used based on flowbench testing.
	A closer look at the ports that connect to the cylinder head. Gasket matching here hurts velocity significantly.

Optional gasket kit is the complete intake manifold gasket set with everything you need to install the lower and upper intakes, as well as a high temp O ring for the distributor drive that will eventually leak if it is not the high temp version found on newer engines. 

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.

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Price: $99.99

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