Fuel line size on a 1969 dodge 440 HP
- Thread starter Stucat
- Start date
69 Sleeper Bee
Well-Known Member
- Local time
- 7:09 PM
- Joined
- Feb 18, 2021
- Messages
- 5,951
- Reaction score
- 27,181
- Location
- Tallahassee Florida
5/16" 440's
3/8'' Hemi's & I think 6 pack 440's but not certain.
3/8'' Hemi's & I think 6 pack 440's but not certain.
- Local time
- 6:09 PM
- Joined
- Jul 1, 2015
- Messages
- 6,389
- Reaction score
- 7,969
IMO.....Original installation was 5/16", U code engine, no vapor separator, The six barrel engine, V code, would be 3/8" with fuel vapor separator and a separate 1/4" vapor return line back to the tank. Just my opinion......
BOB RENTON
- Local time
- 5:09 PM
- Joined
- Feb 22, 2013
- Messages
- 4,178
- Reaction score
- 5,589
- Location
- The Red Anvil Dog House
Unless you're going for a concourse correct 3/8s is better all the way around.
Starting in '68, the 440 High Performance Engines and Hemis were factory equipped with 3/8 inch inlet line with the 1/4 inch return line and the fuel vapor separator.
Unless it is an outright modified performance engine, a 5/16 inch fuel line works fine. The factory A990 Hemi race engines and the RO/WO engines ran with just a 5/16 inch fuel line from the factory.
Unless it is an outright modified performance engine, a 5/16 inch fuel line works fine. The factory A990 Hemi race engines and the RO/WO engines ran with just a 5/16 inch fuel line from the factory.
- Local time
- 4:09 PM
- Joined
- Apr 23, 2018
- Messages
- 2,080
- Reaction score
- 2,307
- Location
- Nanaimo B.C. Canada
440 B bodies did not get a 3/8" fuel line until 1970, regardless of carburation.
- Local time
- 4:09 PM
- Joined
- Apr 23, 2018
- Messages
- 2,080
- Reaction score
- 2,307
- Location
- Nanaimo B.C. Canada
One more note. 68 and 69 440 cars got 3/8" pickup tubes but 5/16" fuel lines.
That's exactly how mine came originally, but when I installed a new tank, I just switched to all 3/8".
lemondana
Well-Known Member
My 69 Coronet R/T 440 has 5/16 fuel line with a fuel separator and 1/4 return line.
- Local time
- 7:09 PM
- Joined
- Aug 9, 2020
- Messages
- 3,363
- Reaction score
- 11,895
- Location
- State College, Pennsylvania
When the rubber sleeve connecting to the tank had to be replaced on Baby Blue, the shop guys were scratching their heads, wondering what the factory was thinking with the 3/8 - 5/16 combo.
lewtot184
Well-Known Member
The original fuel supply lines for my 69 r/t were 5/16 front to back. 1/4" return line. I have the original fuei pump off my r/t and it has a 5/16 nipple for tank to pump, 1/8" pipe outlet for a brass 5/16 inverted flare fitting for pump to carb. Never seen a factory 440 with 3/8" lines. 3/8" 6pak carb fuel lines can be somewhat problematic (i've made them), but were never factory.
lewtot184
Well-Known Member
My r/t has a 3/8 pickup-sending unit (original to the car),but came with 5/16 tank to pump.
- Local time
- 7:09 PM
- Joined
- Aug 9, 2020
- Messages
- 3,363
- Reaction score
- 11,895
- Location
- State College, Pennsylvania
I also have the original fuel pump from my '69 GTX, and it has the same set up.
dfrazz
Well-Known Member
If you don't already have a return line and are not looking for a concourse gold car, it is easiest to add a 3/8" line and make the existing line your return. Just need to change the fuel sending unit to accept both lines and add a dual outlet fuel filter.
I still have the OE 5/16" fuel line from my U code GTX....I upgraded to 3/8" just to be sure it wouldn't starve. 
Nobody knew the difference back then in 2001 when I restored the car.
Nobody knew the difference back then in 2001 when I restored the car.
Similar threads
