I've got the same truck as you! I did a gear swap to 3:73 with stock tires it done a lot better! Still was downshifting pulling a car on a hauler but @ less 75% better! Just a gear swap will make a big differents IMO! The cam I got made 306rwhp/298rwtq in a 4.8, just what I've been told!

 

Thats good to know. I have 4.10s on the way, should be a nice improvement over 3.42s. What did you have stock?

 

Same 3:42! Only lost 1 mpg going to 3:73! I did have a CAI,flowmaster & a hypertec lol

 

interested to see your set up man.. i had the ls6 cam at one point but wanted more pull in my 4.8.. put in a 222/224 on a 112 lsa with a circle d 3200 stall.. still have stock 3.42s and this truck definitely has some up and go.. and its my dd

 

hmm i wasnt aware they changed the heads, i thought all 4.8's had the 243 casting head on em. stock compression cant be more than 9-9.5 and believe it or not a nnbs reg cab is prob just as heavy as a nbs ex cab. maybe a LITTLE lighter but not buy much (at least i dont think) but dont get me wrong im not pickin on your choices or anything, im just trying to clarify for future modders lookin for a cam for there 4.8. i just dont see why everyone recommends the tiny cams for em. on a side not your gunna LOVE those
4.10's!

 

They started putting 243 heads on the 07+ nnbs. Before that is the old 862 or 706.

 

Was your 210/216 grind an off-the-shelf variety or a custom grind? It sounds like a real winner for a daily driven 4.8, especially since I'm a rcsb.

 

It was custom. You can create your own on speed engineerings website or tsp.

 

this is correct.. mine came with 862

 

i would like to try a LSR grind in my 4.8 most likey the 273LR its ground on a 112lsa its 223-231 duration lift is 610-617 i have all the supporting mods headers,3600stall,4.10s goin to be 4.56s soon. we will see