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Re: 89 GMC Cummins conversion
Curious what you are doing about mounting the TPS and what you are using. On my 4l80e Cummins conversion I first used a GM TPS that came with the Compushift controller. It was a constant problem and I was replacing them often. I ended up switching to a Ford TPS that I mounted on top of the pump. Seems to work well but need a little more dialing in.
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1972 Cheyenne Super Short Bed big block "Blackie"
1977 Crew Cab GMC Short bed with 4BT Intercooled Cummins Diesel and a 4L80e "The Junkyard Dog"
1985 Crew Cab Chevy dually with 5.9 Cummins "The Big Dog" This is what my dad liked to be called by the grandkids before he passed so it seems fitting for his old truck.
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