Is there anyone on here thats using a 2.75 pulley on their radix on stock bottom end?

 

I'm running a 3" pulley with no problems,I have a 2.75" pulley I'm planning to use with my new 402.The 3" pulley gives 9 1/2 to 10 lbs of boost with my current 5.3.

 

What kind of times are you getting out of that Whitt?

 

I haven't run it at the track with the 3" pulley ran 13.2 with a 3.25" pulley and 5475lb race weight.

 

Yea I have a 3.0 on it now and im only seeing 8.5#s. I have a 2.75 pulley here I dunno if I should throw it on or not

 

If it were me .. I would stick with a 2.9" pulley. I think it was BenKey that said he made more power with it than the 2.7 pulley.

 

Well I just did the 4L80 swap and my truck feels sooo sluggish and I was just thinkin maybe I would put the 2.75 on there till I got the 408 and F1R on there, but I dont want to blow up the 5.3.

 

Do some tranny tuning on that thing
In stock form my 80e felt like **** but with everything you get used to it

 

I cant stand it. It just feels soo much slower maybe I will mess around with the edit tonight. We will see. But as of now im thinkin about taking the blower off and putting the fast intake on there and puttin 150 worth of bottle on there till the motor gets here.

 

Don't forget that was in his SS with the 6.0L LQ9. The Radix for that motor comes with the 3.3 pulley stock, versus the 3.4 for the 5.3L motor. Smaller pulley on the 6.0L because more cubes mean more blower to get the same psi. That 2.9 on Ben's motor might translate into a 3.0 ona 5.3L.