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