throttle body
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Join Date: Apr 2004
Location: Grand Rapids, Michigan
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My joke ported and polished BBK 80mm works like a charm and have never had any sticking problems. It has helped me put down some great numbers on a LS6 mani 460/418. The stock inlet on a LS6 is 75mm and the stock TB is 75mm. The BBK 80mm comes with an adapter plate to neck it down to the 75mm manifold inlet. I bolted the adapter plate to the mani and used a die grinder to open up the adapter tapered end and followed it into the manifold. I was able to open it up to 79mm. That's an 11% increase in area. I hope to put down very high 400 RWHP when I go to get her re-dynoed after my recent head install