I have a 00' GMC 4.8L w/ FM exhaust/ TB Spacer/ K&N Filter/ and I plan on getting the Nelson Tune, Pulleys, and 4.10 gears. My best run was a 15.5 in November 40 degrees. What kind of Power Gain could I expect with adding those three things.

 

Maybe 14.99. Traction might become a problem. These 4.8 are alot to handle you know

 

What do u mean by they a alot to handle?

 

hes just being a smartass. hurry up and get them mods on! we have a track meet at HRP coming up this november. ill PM you a date and time as soon as we set it in stone.

and for your question, i would say 14.99 too.

 

what???? They are alot to handle. Come up here and drive mine. Its a handfull if your not paying attention when it hits boost.

 

I would say with same temps that you ran your best in would be a 14.5@93

 

14.7 would be my vote