Anyone with a 351W and a holley carb.....

[9 Deuce GT]

I have a buddy with a '69 Mach with a 4v 351W and he wants to replace the factory carb with a new Holley for drivability reasons. The factory carb makes this thing run way to rich. Almost to the point of being a dog in the lower RPM's. Hold on in the upper R's, but it would nice to have the power this thing can make at all rpm levels. Can you guy's show me your pics of your Holley set up.

 

[brianj5600]

Is the motor all stock? Is he realisticly planning mods to the motor.

 

[D.Hearne]

Any one of these Holleys will work fine: List#1850, list80457 (this one's the same as the 1850 but has the Ford kickdown linkage for automatics) Both these are 600 cfm carbs. List 80783 ( 650 cfm, vacuum secondaries and dual feed bowls, I like this one best) Either of the Holley 570 or 670 Street Avengers and last, if he's done some mods or is going to do some in the future, a list 3310-750 cfm carb. All these are vac. sec. carbs. If he's got a 4 speed, a 650 or 700 cfm double pumper might be what he wants, but forget fuel mileage with these. The vac. sec. carbs also do well with manual trans. cars.

 

[9 Deuce GT]

After talking with him earlier today, he wants the Holly Street Avenger 570. He was worried about having to bend his own fuel line. What do you guy's recommend for this carb as far as a fuel line?

And, to answer an earlier question, no he does not plan any future mods. The motor is all stock minus the cam. It's specs are unknown, but it is fairly mild by the sounds of it.

 

[mikec35]

The street avenger carb will come with a fuel line hook up kit..Its rubber hose and fittings. He could get one of those chrome dual fuel feed lines with or without a fuel pressure guage if he wants a little better line.

 

[D.Hearne]

He's going to have to modify the factory fuel line with any Holley, but the dual feed Holleys come the closest to fitting.

 

[70mustang63b]

I've got a Street Avenger 670 on my mild 351W in my '70 and it's great. I have it on an Edelbrock Performer intake, it was total bolt on and the car runs great compared to the old carb (P.O.S. Carter 625 AFB). As far as the fuel lines go, very simple to set up, little modifications. I used the rubber hose setup that came with the carb, which worked better since I have a fuel filter set up right before the carb, but I will be switching to a hardline set up soon. Can't really go wrong with a Holley on a SBF, they perform great with them.

 

[Stangninjak]

Yep with 70Mustang on this. I also run a 670 HSA on my setup (see sig) with D Hearnes sage advice My setup runs great It pulls hard as hell and it still gets great mpg. I am very satified. I just picked up the chrome dual fuel line that Holley had when I ordered it.

 

[mike50sa]

Go with the 670. The 570 will be small and barely adequate even with a mild set-up. The 670 will work with mild or with a good amount of mods.