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Old 04-11-2021, 09:13 AM   #8
Jason 56
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Join Date: Nov 2018
Location: Ishpeming, mi
Posts: 589
Re: 89 C30 Crew Cab - Gen V LT1/8L90e Install Questions

Not sure about any of your issues with getting the engine in a square body, but If you have any questions about the engine/harness, I’m installing a L83/8L90 in my 56 pickup. I’m reworking my own harness. Biggest difference is that everything is PWC(pulse wave controlled) vs your gen 4 L99. You need to run a factory fuel pump with the pwc module. Fan is the same way. Ac and alternator are also pwc, but can be ran without pwc. If you are going to delete the afm you can run a vacuum brake booster. You don’t need hydroboost, but that’s what I’m running. ( I’m not deleting afm). The power steering is obviously an issue. Lsx innovations has lost of options (the Lt1 will be different than mine). If you’d like PM me and I’ll give you my phone number.
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http://67-72chevytrucks.com/vboard/s...d.php?t=780018 Jason’s 56 build
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