Bird-Of-Prey

iTrader: (23)

With all the throttle bodies and intake manifolds I've had over the years I can't believe I don't remember this. Are the bolt patterns of a stock TB and a FAST 90 the same and only the bore is different? Or are the bolt patterns totally different? This is for a cable operated LS1 F-body.

5.3LJimmy

iTrader: (10)

My PTM throttle body has the four bolt and three bolt pattern. I've never tried bolting it to a stock intake, but it appears to be made to fit both. I'm pretty sure the FAST intake is made the same way. What are you trying to do?

Bird-Of-Prey

iTrader: (23)

Thinking about selling my Victor jr and going with a sheetmetal intake. The sheetmetal comes with a stock TB on it. I want to keep my 90mm.