Hey guys im having a problem with the new 6.0l with texas speed ls6 heads and tsp 233/239 cam that I swapped into my truck.I cant seem to get the truck to idle unless you keep ur foot on the gas and it wont rev past about 3800.I double checked all the grounds they seem to be hooked up.The pcm was tuned by texas speed.Im guessing it has something to do with the 5.3 to 6.0 swap I used my 5.3 intake...Im stumped any help would be great Thanks

 

maybe try a different tune, try a wheatley tune or nelson tune, both do good work. was the texas speed tune tuned for the cam and heads as well?

 

Ya I got the tune from tsp when i got the heads and cam

 

Id get a different tune.

 

I did get the truck to idle last night after pedelin it for a bit....once it did idle the afr looked good 14.7-15.0 but wouldnt really rev past about 3500 and was hesitant to 3500. maybe a ground issue??

 

Either that or you got your timing chain off a notch?

 

Thats what i thought on saturday after we got it all in the truck so i pulled the balancer,cover and checked the cam timing its lined up dot to dot.

 

Have you done a crank postition relearn after the engine swap?

 

No i havent done the relearn...I was told it would have a ses light??How do u do the relearn??

 

You will need HPT or EFI live and a 12 pack for your new buddy. I think a Tech2 can do it also.