Wiring harness question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sleepertruck72 · 08-24-2008, 11:55 PM

I got the chance to buy a engine harness (aftermarket) not really sure what manufacturer but the harness is for a big block. Is it relatively the same as a small block 350 harness ? I figured they would be but I figured I would ask here before I get it. The guy parted out his truck and I made it too late for any goodies.

sneakysnake · 08-25-2008, 09:04 AM

Nothing comes to mind as to why they would'nt be the same

ChevLoRay · 08-25-2008, 10:22 AM

Go to www.wiringharness.com and compare the part numbers for both a small block and the big block the harness was intended for. It will ask for things like transmission (or not) and whether or not it had guages. But getting the power from the junction block to the guages and for the other things that are part of that harness shouldn't really have anything to do with it being for a small block or a big block. Power to the ignition switch shouldn't change. Power to the distributor shouldn't change. Starter wiring should be the same. What else could impact it?

sleepertruck72 · 08-25-2008, 03:34 PM

Thanks guys thats what I figured, I guess I am just an inquisitive idiot

I like to ask questions whenever Im not sure

08-24-2008, 11:55 PM	#1
sleepertruck72 Registered User Join Date: Nov 2007 Location: Turlock California 95380 Posts: 2,075	Wiring harness question I got the chance to buy a engine harness (aftermarket) not really sure what manufacturer but the harness is for a big block. Is it relatively the same as a small block 350 harness ? I figured they would be but I figured I would ask here before I get it. The guy parted out his truck and I made it too late for any goodies. __________________ 72 C20 Longbed 05 1500 Z71

08-25-2008, 09:04 AM	#2
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: Wiring harness question Nothing comes to mind as to why they would'nt be the same

08-25-2008, 10:22 AM	#3
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: Wiring harness question Go to www.wiringharness.com and compare the part numbers for both a small block and the big block the harness was intended for. It will ask for things like transmission (or not) and whether or not it had guages. But getting the power from the junction block to the guages and for the other things that are part of that harness shouldn't really have anything to do with it being for a small block or a big block. Power to the ignition switch shouldn't change. Power to the distributor shouldn't change. Starter wiring should be the same. What else could impact it? __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

08-25-2008, 03:34 PM	#4
sleepertruck72 Registered User Join Date: Nov 2007 Location: Turlock California 95380 Posts: 2,075	Re: Wiring harness question Thanks guys thats what I figured, I guess I am just an inquisitive idiot I like to ask questions whenever Im not sure __________________ 72 C20 Longbed 05 1500 Z71



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