The cowl tank is the best built part on the whole car, and the looks you get filling one are priceless.
Oddly enough, I've been giving this a lot of thought lately as well. Mine is a 30 Sport Coupe and I *think* I am going to get one that mounts behind the seat. What I might also do is cut and fill the filler cap/hole on the front and stick that on the rear in front of the rumble seat lid and run a filler neck down to the tank. I can't, however, remember how the spacing would work. That way I'd get the tank out from under the dash (and I'll have to do that to fit the hemi in) and still retain a more vintage look. Plus, it will keep me from having to put the gas pump nozzle inside the car where it could spill a little. Will it work? I don't know yet. I'm also leaning towards doing mine as a hi-boy (which means I can't use the saddlebag approach) and I really would rather not run a 32 tank hanging off the back.
My opinion is to keep the gas tank out of the cab space for fumes plus safety reasons. A little thought and planning will get you a good out come. Look around and check out other folks projects. Using the original tank is not my idea of a good choice since it is too small and that gravity thing can be an issue at times, I also dont enjoy fill gas with the original filler position as it is a little awkward and spilling on the paint is not good. I have a restored coupe and that has been my experince with original fillers.
That is something that I have heard before but do not agree. The tank in the rear is 100 times more likely to be damaged in an accident. The reason for moving the tank has to do with not using gravity feed and the need for dash space for cool things like clocks and glove boxes. I have been running the original tank in my 28 for 12 years now, but it has worked well and no one has gas on their legs for 80 years now.
I went that route 3 yrs ago with Tanks, and there new fillers. What a crock. A complete pain in the a--. And the caps are designed to just put the nozzle in with out removing the cap, great idea. Ha. They leak gas. And if you do use them make sure every thing is working, if not you got to remove the splash apron. O, and don't call Tanks with a problem, cause you are the only one who ever had that problem, they really are not to intrested in helping you with your problem. NOT for me, EVER again
I will be running a 17 gallon aluminum tank from Summit. It is only 7 inched deep. It will be run behind the seat. I am aware of the dangers, but oh well. Once completed it will have rubber between the bracket I made. It is mounted on a slight angle, but will follow the line of the back seat. I will make a "firewall" for it.
Hot rodding is all about individual ideas so there is nothing wrong your choices, just got to choose what works for you and weigh up the pro's and con's.
looks good..and if the floor is open under it and the bulk head is infront of it behind the seat and sealed to the floor infront of it, if you get rear ended..it would take a pretty good hit before rupture. And with the lack of floor under it, the fuel would spill onto the ground under the car and not into the cab of the vehicle.. this was one of my original ideas..and i may still stick with it.
I love filling my tank in the stock position. And i'm sure it will keep working forever, that is at least until gravity stops working. O, the fuel gauge was the first one I've had that works seeing the gas slosh around inside is cool too
I'm running the original tank on my '30 as well. Adapted it to feed my TBI motor 10 years ago, and have not had an issue with it at all.
It is not the gas that is an issue in a crash, you can put out a match in gas (read Smokeys book), it is the FUMES!!!!!!!