Engine is on its way. Sniper system on my 383. I will need to buy a fuel system for it.
Which direction do I go? HP in line, HP return line, LP to a tank then HP?
1966 C-10 Step Side. 283, 4spd, 3.73 gear. 60K miles prior to restoration. 507 Paint Code. Currently in 10,000 pieces, but it's starting to go back together. Rear Suspension is done! Wheels are done! Bed bodywork is done! New 383 and TKO 5 speed in place.
What are you doing for a tank? Did you have the under-bed tank that is plumbed into the stock filler neck?
I am going to stick with the OE tank. There is no rust in it. I might add the underbed in the future, but for now it's behind the seat.
1966 C-10 Step Side. 283, 4spd, 3.73 gear. 60K miles prior to restoration. 507 Paint Code. Currently in 10,000 pieces, but it's starting to go back together. Rear Suspension is done! Wheels are done! Bed bodywork is done! New 383 and TKO 5 speed in place.
The geometry of that tank is going to be tough for setting up a returnless system. The lack of a return port on the sender is also something of a pain for it.
I would probably do the same setup as I put on my 84 when I LS swapped it: high pressure pump just under the floorboard where the existing line is, regulator under the hood, then put a return bung in the tank next to the sender.
When things are tight, there is enough room on the fuel level sender plate to solder in a return tube. Bulkhead fittings do make things much easier, though.
I would probably do the same setup as I put on my 84 when I LS swapped it: high pressure pump just under the floorboard where the existing line is, regulator under the hood, then put a return bung in the tank next to the sender.
Thats the type of thing I am wondering about going return line or not? I see both types of systems and am wondering if the returnless pumps are more prone to failure? I have no fuel in the tank as it has been dry for years so drilling is not a issue, nor is buying the fitting. Just need to be able to make a educated decision.
1966 C-10 Step Side. 283, 4spd, 3.73 gear. 60K miles prior to restoration. 507 Paint Code. Currently in 10,000 pieces, but it's starting to go back together. Rear Suspension is done! Wheels are done! Bed bodywork is done! New 383 and TKO 5 speed in place.
Most companies are going to returnless pumps. I have run them in a couple projects and not had any reliabikity issues.
My concern in this case is finding one that you can install with your tank geometry. They are typically designed for more modern fuel tanks that are wider and flatter.
I personally prefer having a return-type system because it avoids pressure drop through the hoses. It is a lot more critical to make sure your hoses are large enough and not getting flow restricted by bends and such if you are regulating it at the tank instead of the fuel rail.
[quote=Fibonachu] My concern in this case is finding one that you can install with your tank geometry. They are typically designed for more modern fuel tanks that are wider and flatter.
What does that matter? Is there an issue of pulling the fuel up and out of the tank before pushing up to the engine?
1966 C-10 Step Side. 283, 4spd, 3.73 gear. 60K miles prior to restoration. 507 Paint Code. Currently in 10,000 pieces, but it's starting to go back together. Rear Suspension is done! Wheels are done! Bed bodywork is done! New 383 and TKO 5 speed in place.
Ferris, I installed a Sniper EFI the last summer on a 57' 3100. the truck had a rear mounted fuel tank with no provision for a return line. I installed the return line in the tank filler neck, this worked out good, I'm sure that you could do something similar in your case.
Just a couple of notes with using the Sniper system, use a much hard line as possible and limit the radius on your bends. The Holley system is really prone to problems if you restrict the fuel flow, tight bends just add to that problem. The fuel pump supplied with the Holley kit is designed to push fuel not pull, if you are going to use the stock tank location behind the sea (pulling from the top) you may need to add an auxiliary fuel pump. The auxiliary pump can pull fuel from the tank and supply it to the Sniper pump. Insure that the auxiliary pump is capable of enough volume to keep up with the system, prussur is not really an issue here as the Sniper pump supplies that to the EFI.
Come, Bleed or Blister something has got to give!!! '59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)
I have not bought the fuel system yet. I have all my original hard lines from the tank to the front of the truck. I will take a look at your install again.
1966 C-10 Step Side. 283, 4spd, 3.73 gear. 60K miles prior to restoration. 507 Paint Code. Currently in 10,000 pieces, but it's starting to go back together. Rear Suspension is done! Wheels are done! Bed bodywork is done! New 383 and TKO 5 speed in place.
