5.3 with tr224 cam

Well my friend decided to keep his cam and wants to put it in is 06 silverado he was asking me how bad his milage would get concidering that's all he gunna do other than the tuning and gutting out the cats he's leaving the stock stall cuz he still wants to tow sometimes the cam is tr224 with a .561 lift on 5.3 any type of info. will help. Thanks

it'll be a pig down low and off the line, but once it hits 3500+rpms, it should move pretty good.
gassy smell is expected.
mileage will suffer about 2mpg.

You can still tow with a reworked tb stall from circle d. Should stall between 2800-3200 dependig in the option you choose.

thanks