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**Steve Van Gent** · 04-09-2019, 08:15 PM

Just did a project for my kid's K5 blazer; He installed a 5.3L LSx motor and needs to make it California smog legal, the gas gauge sending unit in his squarebody K5 is 0-90 ohm sender, his computer from 2001 Tahoe motor is looking for 30-180 ohm reading. I installed a programmable logic device designed for cars with linearizing table to convert resistance from old to new. Worked pretty cool, passing computer smog now. This will be his third trip to referee station. According to referee, this will be the first smog legal engine swap from 90's V8 to 2001 Tahoe LSx motor in Northern California- we will find out tomorrow (think good thoughts)! If he passes, I will do a write up on all steps done to make engine swap happen. There are some key MUSTS from donor vehicle that must be acquired, and 50 state legal motor is by far best option.

Huge jump in horse power and performance, as well as fuel mileage. IN fact, the first thing he did was shatter his 10 bolt rear end with new engine.

04-09-2019, 08:15 PM	#8
Steve Van Gent Senior Member Join Date: Feb 2009 Location: Redding, Ca Posts: 333	Re: What are your build electrical problems? Just did a project for my kid's K5 blazer; He installed a 5.3L LSx motor and needs to make it California smog legal, the gas gauge sending unit in his squarebody K5 is 0-90 ohm sender, his computer from 2001 Tahoe motor is looking for 30-180 ohm reading. I installed a programmable logic device designed for cars with linearizing table to convert resistance from old to new. Worked pretty cool, passing computer smog now. This will be his third trip to referee station. According to referee, this will be the first smog legal engine swap from 90's V8 to 2001 Tahoe LSx motor in Northern California- we will find out tomorrow (think good thoughts)! If he passes, I will do a write up on all steps done to make engine swap happen. There are some key MUSTS from donor vehicle that must be acquired, and 50 state legal motor is by far best option. Huge jump in horse power and performance, as well as fuel mileage. IN fact, the first thing he did was shatter his 10 bolt rear end with new engine.