Fuel Pumps

The members that are running a V8 Rovers or Buicks with carbs, what are you using for fuel pumps? I assume that the SU's need a upgrade are am I wrong about that? Thanks to all for the help & regards.

When I converted my 2.8l Cherokee to the 3.4l, I had to install an electric pump, because the 3.4l has no provision for an electric pump. Guess what was "lying around" at the time?

The stock SU runs a carb'ed 3.4l just fine, even towing on the highway. Since a 3.5l V8 is so similar in terms of displacement and HP, I bet it will feed the V8 just fine. I bet it is what the factory used for the 3.5l V8?

Duncan, that may very well be the case, I had sent a PM to Simon and he feels the same way, so I'm going to give it a shot and hey I can always pick one up if I need it.

Thank you for the help, I have never done a swap before and I am going to have a lot of questions when I start and yes some of them will be dumb but hope the members will look over that.

Thank again.

Regards

Phil

The stock SU is borderline for a big V6 or small V8 conversion. It is a low, very low pressure pump for an 1800cc 4 cyl. It will keep up okay for cruising, but not for serious flogging.

I used the SU for awhile, then switched to a Carter that solved my fuel issues. It's pretty noisy, though.

Phil and I have discussed pumps and I passed along the ones suggested in the book "How to give your MGB V8 power".

He did mention a Carter pump and ironically the book states it works well but is noisy.

Same thing with the Holley pump. I've used that, Carter, SU, Walbro, and generic and unless you have a very high HP application, the Walbro and generic pumps seem the best suited as they are quiet, give adequate flow and pressure, are less expensive (sometimes much less), and more easily mounted and attached.

Consider that for most applications you are feeding an engine of less than 300 hp. For that any generic pump designed for a SBC application is quite adequate. I think in the mid '80s an electric was used in the Camaro for instance so that replacement pump would be a good choice. Ten years back you could buy those all day long for $30 each and they did the job just fine. In fact I have 3 or 4 used ones on the shelf that are still good, and occasionally find other uses for them. (I ran 3 of them on my Travelall back before converting to EFI, one for each tank. That engine put out close to 400 hp.)

Jim

Rover V8 with a Holley served by a Texair 7 psi in line pump in the boot.
I tried the SU and dual Mikunis first but they could not provide the pressure needed
An alternative is the Facet red top or some others offered by Carter and Holley.

Ralph

Thanks to all of you for the help, this is the best place for info that I know of. I will have a lot of questions when I start the swap, some will sound dumb but just try and look by that. This is my first swap. I have replaced water pumps, plugs, points, wires and the like but never this deep.
I have meet a some of you in Tenn. a year are so ago but I did not have a car at that meet. The wife and I were on vaction in PF and we just road over for a little while but I sure would like to have ours ready for the next one.