RedDemon2

Will a stock throttle body of a 98 Trans Am fit a 78mm LSX Intake Manifold. Thinking of buying one, but not sure if it will fit the stock TB. Also will it actually give the LS1 more horsepower by going with a larger TB 78mm or larger. Thanks!

Hawkn01

iTrader: (1)

Yes the stock TB will bolt right up. You will need to clearance the TB throttle cam so it will clear the PCV and open 100%. I ran the 78mm intake with a S2 ported TB when I reset the Stock Internal record.

RedDemon2

Thanks for the Info!!!!!!

Damage Inc.

iTrader: (7)

Just for a heads up. The LSX is a lazy **** intake. Be prepared to make trips to the hardware store for nuts and bolts because it looks like nobody at FAST can tap a hole. You'll see what I mean. The intake performs though so don't sweat it.

Hawkn01

iTrader: (1)

Don't know why you say that, everything I needed came with the intake. The install was easy with no problems other than clearancing the TB cam..

Reddemon2, I'm upgrading to H/C and no longer need my 78mm Fast intake. It's up for sale if interested. I bought a 90mm for my new combo. PM me if your in the market to buy one. It was only on the car for a short period of time.