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I have a dead head now but purchased a bypass

Do bypass regulators bleed off fuel pressure when the engine and electric pump is off? Reason I ask is I have a heat soak restart issue and I know it will help cool fuel make it to the carb if it’s plumbed after the carb but if it doesn’t release pressure in the line at shut down i may be...

Something like this ? Fuel Tank Sump FASS Airdog Fuelab Pump Fit Cummins Powerstroke Duramax

Yes the sender is tight, I would have to cut and drill out the 1/4” tube and add a 3/8” ..

I have a new sender like that with the vapor/ return but it’s only 1/4”. Return should be the same as the supply side size . Thanks that bulkhead might be the way to go.

That was my old setup. Cheap and easy to make, foam from summit and I think .080 or so?? Aluminum sheet, cut with jig saw, a couple of stand offs about it.. worked good to pull cool air, felt a seat of the pants difference, but no real ram air/ big HP difference.

I’ve got a brand new spectra fuel tank about ready to go in my 71 demon along with a new 3/8” sending unit. I run a Mallory elec pump and will be using a return style regulator to help ease fuel boil over when parked hot. I will run a 3/8” return back to the tank. The sender has the small...

Once it starts it’s fine, it does have a MSD. It doesn’t really chug or blow smoke out.

I think I have a 6.5 in it, if it’s blown I’m guessing your thinking it will leak down

Now that I have a 6 pack on my car when it sits hot for more than 10 or 15 minutes it is hard to start, guessing it has to do with all that mass because I didn’t have this problem with a 4bbl. I run a electric pump so no problem when driving. Can I replace my regulator with a bipass regulator...

plenty of stock/ super stock racers running 10's with a sb 6 pack. My mechanical direct connection setup with ported manifold pulls just as hard as my old 750DP single plane setup.

I wonder how that would work on the SB manifold? I'm scared to try!

motocraft fa-48 that you will have to cut down, rock auto had them for under $20

sold a few 71's off several years ago, after taking the best parts off of those and using them on the one sitting on my shelf, also ws lucky enough to find a jet kit for it

you need to find the 71 type by the looks of your setup, or if you cant change the fill tube might work

These carbs are still working great and trouble free

Looking to dump the electric pump and go back to a stock simpler type set up. Will a stock 340 pump keep up with 450hp 6 pack? Any good aftermarket hi volume pumps that do not need a regulator? Thanks

I believe you, google Ford nascar tri carb or something to that effect maybe you will find it!

What was that now ????

Why not 4.125 ?

Id use your LD340 with a 1/2" to 1" 4 hole spacer if you have the room, the AG might be worth 3 or 4 more but not worth the cost. I thought i would loose some HP when i went 6 pack but with the deep porting i did on the intake and the DC mechanicals flowing a true 1000cfms, it feels stronger...

To the OP i would make sure you have a 3/8" pickup and fuel line to the pump, the pump might actually work better on the car with a full tank of gas. There will be some pressure on the suction side of the pump with the fuel in the tank.

4846S = 850cfm 4847S = 1000cfm, these have press in jets. 4846/4847- SA -models are later models with screw in jetting I think these are the early 69/70/71 carbs with the angled idle air screws. Jets are very hard to find and expensive. The 1,000cfm carb was a bit finicky on the street, need...

71 t quad should be the same for the later ones I think? http://www.napaonline.com/napa/en/p/CRB2483_0063312062

got my brass ones at NAPA

Does it squirt gas into the primary side and the first instant you move the throttle linkage??

Actually Buddy bar casts the mopar one. Eddy I believe cast some originals and also farmed out a lot to Buddy Bar, the original BB 6 packs were eddy and when they could not keep up Chrysler cast then from cast iron. But I don't think the OP needed that much info

As far as I know edelbrock doesn't make the intake, mopar performance is casting them from edelbrock design. They say mopar on them and are a bit heavy compared to the originals. Originals are around $350 to $450 the mopar ones are $250ish. Performace is about the same. I think all the original...

I like Holley's but they do run rich just off idle/ cruise 20mph to 40mph. I think the vacuum street avengers or what ever holley called them are designed to be a little leaner at cruise.