1971 Jimmy Fuel setup help? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**landarts** · 11-28-2023, 12:12 PM

I have read and searched for three days and am still a little confused about what setup will work. Let me give you a little background on what I want to do.

I would like to use a 25 galllon 87 Blazer tank since it has a baffle in the tank. Use the 87 sending unit for that tank and install the proper fuel pump on the sending unit. I have stock gauges in the 1971 Jimmy and I know they are set up for 0-90 ohms. According to everything I have read the 87 sending unit is 0-95 ohms.

So do people just live with that incorrect reading, and change out the sending unit head from a stock 1972 sending unit that is 0-90 ohms? Is there an adapter or a better way to do it?

**clay68c10** · 11-28-2023, 03:40 PM

The 87 sender should be should be 0-90 also.

jessemthompson · 11-28-2023, 11:38 PM

The 87 sending will work. I used this setup when I initially did my LS swap.

11-28-2023, 12:12 PM	#1
landarts landarts Join Date: May 2005 Location: Star, Idaho Posts: 1,382	1971 Jimmy Fuel setup help? I have read and searched for three days and am still a little confused about what setup will work. Let me give you a little background on what I want to do. I would like to use a 25 galllon 87 Blazer tank since it has a baffle in the tank. Use the 87 sending unit for that tank and install the proper fuel pump on the sending unit. I have stock gauges in the 1971 Jimmy and I know they are set up for 0-90 ohms. According to everything I have read the 87 sending unit is 0-95 ohms. So do people just live with that incorrect reading, and change out the sending unit head from a stock 1972 sending unit that is 0-90 ohms? Is there an adapter or a better way to do it? __________________ Super Cheyenne aka the "Devil Cowboy" 71 K20 Idaho Edition 69 K10 from the Field 68 Second Chance Fix and Sale 72 GMC 3/4 ton 4x4 K2500 The "Fixrupr" build thread 72 Cheyenne 1/2 ton " FIXRUPR " - daily driver 67 C20 all original paint 71 K20 Custom 4x4 (Idaho Edition) 72 K20 GMC Super Custom 4x4 72 K20 Custom Deluxe 4x4 69 K10 Custom package 4x4 (69 K10 from the field) 72 K10 Custom 71 K10 Custom 72 K20 Custom Deluxe 4x4 72 K20 Crew Cab Project 71 GMC Jimmy CST 72 Blazer 70 Blazer

11-28-2023, 03:40 PM	#2
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,979	Re: 1971 Jimmy Fuel setup help? The 87 sender should be should be 0-90 also. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

11-28-2023, 11:38 PM	#3
jessemthompson Registered User Join Date: Nov 2011 Location: Williamsburg, VA Posts: 960	Re: 1971 Jimmy Fuel setup help? The 87 sending will work. I used this setup when I initially did my LS swap.



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