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it is if you plan on getting an ls6 intake down the road, when i got my tb ported from the powderpro i could tell it had more throttle response and i could definately notice it..
Ive not done many truck TBs but Ive not seen a 80mm TB on them either. I did a Silverado SS TB one time and it wasnt 80mm I dont think(been back when they were new lol).
Well then Will Handzel ...How to build high performance Chevy LS1/LS6 V-8s lied.
I will take your word for it and stand corrected since you are the porting master.