The ease of install with my variety of pulley removers, 250ftlb impact, and probably hour tops make the price seem reasonable.

Trying to achieve better throttle response, ported my throttle body, can see a slight difference...might be in my head.

Are there better kits out there then asp? I like the fact that the alt pulley is included. I like the deep grove SLP but no alt pulley included.

Or just stay stock?

 

i went slp. on the older ls1 fbodys the asp was known to cause knock sensors to go off.

 

Interesting! Did you get an overdrive alt pulley?

 

Id go SLP. Cheaper but yet good quality.

 

I did mine the same time I did an ls7 tb. I can say that the truck runs well but I'm not sure it was a big butt Dyno gain. On my old 5.3 I ran one and it gained as much as my tune did! On the bigger 6.2 it can only help right? I have a 1000watt stereo in my truck and still run the factory alt pulley without ill effect. I do notice however at parking lot speeds (under 1k rpms) the steering wheel can feel heavy at times. I run the Asp pulley and would recommend it only if you've only done all other boltons.

Good luck

 

What belt sizes do yall run?

Accessory Belt = 755K6
A/C Belt = 378K4
Will these work?

I figure it would make the motor wind up a little faster by freeing up some rotation mass. And I like the fact that I can take it off and install the stock pulley back on if I don't like it or have issues.