bobby5

I was gonna order a nitrous plate kit and my car had a fast intake on it but I'm not sure what size it came with. Is there a quick way to tell without measuring it? I'm pretty sure it's a older 78mm grey fast but want to be possitive.

Thanks

soloman369

iTrader: (13)

You would be able to tell if it was a 78 stock throttle body will fit on it and the fast 92 came stamp 92 on it, if it doesn't its a 90mm

HCI2000SS

iTrader: (2)

Yep the TB size is the way to tell

bobby5

It came with a nick williams throttle body but Im not sure what that size eithier

bobby5

I'm pretty sure all the h/c/I was done before 2005 so I didn't know if fast had the 90 mm intake out yet or what year they started making it.

soloman369

iTrader: (13)

If it Doesn't say 92mm on it its a 90mm or if your still confused just post a pic and ill be able to tell you.

dr_whigham

iTrader: (49)

Tape measure maybe...? Is that thinking crazy? Maybe pop the TB off and MEASURE, or even the TB opening?

OSU Football Fan

iTrader: (23)

You should be able to pull the bellows and measure the diameter of the throttle body blade, or pull the throttle body and measure the diameter of the intake manifold opening.

25.4mm per inch:
78mm - 3.07" diameter.
90mm - 3.54" diameter.
92mm - 3.62" diameter.
102mm - 4.02" diameter.