TBI Fuel Line thread size? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Madbomber88 · 01-01-2007, 04:06 PM

Does anyone know what the thread size is on the Throttle body for the fuel line and return fuel line?

I'm converting my 72 K20 to TBI and want to use Aeroquip's socketless tubing, but need to know what fittings to get, and they list them as NPT and AN. I know the threads are metric.

Thank you in advance.

**Captkaos** · 01-16-2007, 07:13 PM

14mm and 16mm.

01-01-2007, 04:06 PM	#1
Madbomber88 Active Member Join Date: Mar 2004 Location: Virginia Posts: 169	TBI Fuel Line thread size? Does anyone know what the thread size is on the Throttle body for the fuel line and return fuel line? I'm converting my 72 K20 to TBI and want to use Aeroquip's socketless tubing, but need to know what fittings to get, and they list them as NPT and AN. I know the threads are metric. Thank you in advance. __________________ 71 Blazer CST 72 K20 Capt USAF

01-16-2007, 07:13 PM	#2
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: TBI Fuel Line thread size? 14mm and 16mm. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com



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