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**1971Stepside** · 10-17-2018, 12:32 PM

I have a 6.0 and went with the BTR Stage IV. They told me that would add about 75hp to the engine. I added the large tube headers. That is supposed to add another 20 -25hp. I'm hoping to hit 400hp once it is tuned. I don't think you will be close to 450hp with a stage 3 cam. Mine is together, but far from running at this point so I can't speak to the overall feel. Mine will only be a sunny day ice cream fetcher.

10-17-2018, 12:32 PM	#15
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,928	Re: Building a 5.3 looking for horsepower I have a 6.0 and went with the BTR Stage IV. They told me that would add about 75hp to the engine. I added the large tube headers. That is supposed to add another 20 -25hp. I'm hoping to hit 400hp once it is tuned. I don't think you will be close to 450hp with a stage 3 cam. Mine is together, but far from running at this point so I can't speak to the overall feel. Mine will only be a sunny day ice cream fetcher. __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."