Originally Posted by thiems

That is about all you are going to get out of a stock 4.8, so nothing out of the ordinary there. Like 2K5Squirrel said, he got 1.5 second out of gears and tune (Nelson) which will run you about $1000. Add a 100 (or 150) shot of nitrous for $500 and you might see a high 14...

Originally Posted by RabidStreetRacer

I ran my stock 5.3 extended cab and had a best of 15.98 in like 95 degree weather. I didn't know there was such a big difference in the power from a 4.8 to a 5.3.

Originally Posted by 2k5Squirrel

big difference in TQ

Originally Posted by RabidStreetRacer

Well i had a 2004 Silverado 4.8 reg cab w/sport bed and I thought it would beat my 5.3 extended cab because of the sheer weight difference, i didn't realize there was that much of a difference in power.

Originally Posted by One_Slow4.8

i thought the 5.3 was 305??