Will this work on my 81 c10 with a 5.3 LS?

No, that pump is for throttle body which takes around 12 pounds pressure to run. But your truck requires 58ish pounds , and if you have duel tanks you’ll need to beef up the bypass valve lines. So in a nutshell you need more pressure for your 5.3 .😎

what is the ohm range for the sending unit?

Hello, ohm range is 0 - 95 ohms. Thank you.

Is this tank baffled for efi?

Yes, I used this sending unit in my tank it will except fuel pump for efi.I bought a gas tank for 87 c10 which has a baffle for efi. I used a EP381 fuel pump.

Brand	Spectra Premium
Fit Type	Vehicle Specific Fit
Item dimensions L x W x H	6.25 x 7.5 x 12.7 inches
Material	Stainless Steel
Item Weight	1.32 Pounds
Body Material	Stainless Steel
Mounting Type	Tank Mount
Global Trade Identification Number	00671607140583
OEM Part Number	Not provided in the given data, but likely a GM part number
Manufacturer	Spectra Premium
UPC	671607140583
Model	FG05M
Item Weight	1.32 pounds
Product Dimensions	6.25 x 7.5 x 12.7 inches
Item model number	FG05M
Exterior	Machined
Manufacturer Part Number	FG05M

Spectra Premium FG05M Fuel Tank Sending Unit

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Description

Specifications

Common Questions