has anyone run this throttle body spacer on their 454??? If so what do you think of it? It's a hard swallow for 150.00 I would like some info and maybe some feedback if someone is running one thanks guys...
To clear it up a little more if your engine is throttle body (TBI) up to 1995 then it may give you a slight improvement, probably not much, and not worth the price.
If it's Vortec 1996-up then no way in hell...forget it.