for everyone to know what it was before i change things around :

5.3 bolt on + big cam , under 290hp ?

i was frustrated and a little bit angry at the same time but i sit my mind to make new plan ( 1 7/8 LTs Kooks + 3" ORY - used 799 heads - Edelbrock 90mm tb - slp crank pulley - e-fans ) .

i would like to thank so many people especially beau from texas speed a great guy to do business and have solution for every thing , and oakley6575 for helpful input and answers to my problems , my tuner ryan abo sandok for a tremendous work on my truck he did one hill of a jop to tame it right .

we have faced leaking exhaust + one fan didn't work for some time + a hot weather that hit 96.8F ,

the base tune without dyno run ( Pic ) :



tuning pics :











Vid :

04 sierra on dyno 353 hp 338 tq - YouTube

this thing pull hard but in a N\A setup you may need 3300+ converter and 4.10

next is trick turbo kit + genx 215 heads + Vic jr if needed ( 90% )

kerrige what do you think ?

Thanks a lot for reading