3500 Plenum TB Adapter

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Product Information

These are billet adapters to use the 3500 plenum with our billet throttle body or a stock throttle body*.  O-ringed on both sides to eliminate the need for gaskets.  There is also a nitrous port on the side if you need it (3rd picture).  Comes with everything you see in the picture (2 bracket bolts and 4 bolts to the plenum).  LA1 3400 GM 60 Degree V6 LX9 3500

*To use this adapter with a stock throttlebody, you will need to modify your stock TB to put a passage from the IAC port at the top back to the main bore hole.  You will also need to remove the 1 O ring and use a gasket or silicone.  These were made solely for our billet TBs but wouldn't require too much work to be used on a stock TB. 

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Price: $54.99

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