[boodlefoof]

I'm planning out the fuel system for my '63 Tempest that will have a fairly hot street/strip stroked 400 and hopefully run in the 11s (or better!). The engine will have a pair of Holleys on top. I'm starting from scratch and am considering going with an electric in-line pump setup. I haven't put together such a setup from scratch before. I could use some help with planning.

Here is where my plan is currently:

1. Find a stock-looking tank that fits and sump it;
2. 1/2'' lines and hoses throughout;
3. pre-pump filter Summit 230118 (100 micron, 8AN in/out);
4. Holley Black pump p/n 12-815-1, (3/8 NPT in/out);
5. pre-regulator filter Russell 650103 (40 micron, 8AN in/out);
6. return-style regulator (tucked away somewhere out of sight); and
7. from regulator, plumb one 1/2'' line through gutted dummy stock fuel pump, then up to carbs, splitting the single line with a tee fitting.

I'm unsure on which pressure regulator to choose. Holley's recommended part numbers with the pump are non-return regulators. Having read through numerous archived posts on this topic, I'm convinced I want a return-style regulator though. Any recommendations on one to use? The Holley 12-845 looks like it would work, but is $150. The cheaper ones that I see have 3/8 NPT outlets. Would a 3/8'' regulator result in substantial restriction in an otherwise 1/2'' setup?

I note that the fuel pump is also 3/8 NPT, but the price on pumps starts going up quick on larger in/out pumps...

Any general comments are also welcome on things I could do better, including comments on how to save a few bucks!

[jonmachota78]

I've been using this reg with good luck:
http://www.jegs.com/webapp/wcs/store...=&pgGrp=search

[ahnuld]

everything your doing is good but i changed to a holley hp125 pump, so worth it, i don't hear it unless engine is off, as for all the work for a tank i would just cut the trunk area and build a drop style floor and drop it in, still gives lots of trunk space, but that would be the easy way, haha. Dan

[HWYSTR455]

x2 on the Holley HP series pumps. Might as well do the 150, it's not that much more. For regulators, I used this Aeromotive, and it's stable & accurate:

http://www.summitracing.com/parts/aei-13301/overview/

The Summit brand filters are great quality for the price. With a carb, you can get away with running only one 100 micron after the pickup and before the pump.

A 3/8 NTP can take a AN 8 or maybe even AN 10 and there would still be no restriction. Internal passages are the key, 3/8 is plenty.

.

[boodlefoof]

Thanks for the thoughts, guys. I really appreciate it.

A couple of follow-ups.

Looking more at regulators, I notice that many of them talk about being "able to support up to X horsepower, using a single carb..." For example, take a look at Quick Fuel's 30-900 model. I notice a few regulators that have a description specifically talking about multi-carb setups (and they have multiple regulated outlet ports).

Again, my plan was to run a single 1/2'' line out of the regulator, through a gutted dummy fuel pump and then up to a tee to feed the two Holley's. This allows me to keep a fairly stock look.

Am I going to be in for trouble trying to feed two carbs in this way?

[boodlefoof]

FYI for those trying to find a gas tank that will fit under the trunk floor of a '63 Tempest and look at least sort of "stock."

After measuring under the floor and pouring over factory tanks for different models online, it looks like the tank for a 71-72 Pontiac Ventura will fit in the space pretty nicely. It is 38'' wide x 19.5'' front to rear x 7.75'' deep and has an 18 gallon capacity. It also has a center/rear filler neck location, though it has a welded-on filler neck would need to be cut down. Uses two straps oriented front to rear.

I'll be ordering one and trying it out.

[69Farburd]

FWIW, I installed a Holley black on mine, and every once in a while it would decide to just quit running. I replaced it with a Carter 4601 and have been happy with it.

[boodlefoof]

FYI - I placed the order. I went with the Holley HP-150 pump and the Jeg's regulator mentioned above.

I received the fuel tank. It was part number RSD-AFT7104 at Summit. Again, it is for a '71-'72 Ventura. When I received it, I found that it is stamped with part number GM46C, which is a number I've seen it listed by elsewhere (that, or GM46B). It cost $140 delivered and looks like it is going to fit like a glove under there once I chop down the filler neck. Might be a good option for folks looking for an inexpensive tank for an early Tempest. I also just happened to have a pair of trunk support/strap mounts from a '68 Camaro that look like they will work perfectly to mount it. I love it when a plan comes together!

[boodlefoof]

Just thought I would update this for anyone searching later regarding fuel tank solutions in an early Tempest.

As I mentioned before, I got the tank and a pair of straps for it. The 1st gen Camaro trunk supports fit perfectly on the tank, and only required a little trimming at the end to sit flat against the trunk floor.

I cut the filler neck off of the tank and was able to mate up the original filler neck with a short piece of 2'' fuel filler hose from NAPA. It stretches enough to get over the 2.125'' neck from the '63.

Then I sumped the tank, hoisted it in place and began welding in the trunk floor/tank supports. Yes, my lower tail pan needs some TLC... It is on my list of things to do.

[67cruiser]

Hope this helps, i was having a little trouble with small flucuation is pressure, i called Mallory and return line should be one size larger than the fuel line from tank, cured my problems.

[LeighP]

Just a thought...don't forget to wire some sort of safety switch arrangement t osupply the power to the pump.
Holley make an oil pressure safety cutout switch, you can wire a momentary ON contact switch to bypass the safety switch for priming the carbs prior to starting.
Another idea - I use an LPG Gas system safety switch on my car...has a tach pulse input...no tach pulse, no power to the fuel pump. The big advantage on this idea is the switch has a few seconds of power to the pump when you first turn the ignition on...enough to prime the carb.