Stopped over at Dans place to get my TB today, I love my Fastman TB already

 

That's good to hear It's one of the next things on my list...though by the time I get to it, I may be able to just stop by and pick it up from him as well

 

Ive heard a lot about Fastman TB's. My next 2 mods are a high flow cat and a Fastman. Exactly what does a Fastman do for horsepower and gas mileage?

 

I have a new one for sale in classifieds if anyone is interested.

 

Don't know, but it does wonders for airflow. The stock Holley castings and specifically the throttle shaft and butterflies aren't all that great. At WOT they take up 1/3 of the bore. On a Fastman TB it's more like 1/10 of the bore.

 

I heard a spacer with a fastman is bad.....but a spacer alone is good if you dont have a fastman....that true?

 

Noooooo....spacer always = bad when your truck is fuel injected