Larger Fuel Tank
Thread Starter
Instructor
Joined: Jul 2006
Posts: 206
Likes: 0
From: Washington DC
Larger Fuel Tank
I'm looking to get a larger fuel tank in my 77 so I can drive more than 60 miles without having to stop for gas 
. Has anyone put in a fuel-safe fuel cell or is there a tank upgrade that works with the original hardware (sending units etc.) ?
Thread Starter
Instructor
Joined: Jul 2006
Posts: 206
Likes: 0
From: Washington DC
OR if anyone knows how expansion tanks are hooked in or if there are any available for a 77 that would be helpful too. The car has had the spare tire removed so there is some extra space to work with.
Le Mans Master
Joined: Aug 2000
Posts: 6,362
Likes: 7
From: Brazos TX
Cruise-In IV Veteran
Cruise-In V Veteran
You could have a custom tank built. That's the only option I can think of. Rock Valley can build a custom tank. http://www.rockvalleyantiqueautoparts.com/catalog.htm
Safety Car
Joined: Oct 1999
Posts: 4,101
Likes: 10
From: NorCal
Wow!
60 miles! I thought mine was bad at 130 or so. I'd bet the bladder is collapsed in yours. I did have an outfit in LA that offered to make a 30 gallon alloy cell that dropped into the area formerly occupied by the spare, but they didn't want to know what it fit because the spare is part of the crash protection from the factory and it would have been off-road certified only. I'd bet there are any number of tank manufacturers that could do the same thing.
Hans
Hans
Safety Car
Joined: Oct 2004
Posts: 3,725
Likes: 5
From: Minnesota
Between taking out the tank bladder and adding overdrive I increased the range on my 75 from around 100 miles to over 200. Not sure what the 77 has for a bladder or if you'd want to die in a fiery crash in your quest for extra range though.
Safety Car
Joined: Oct 1999
Posts: 4,101
Likes: 10
From: NorCal
Thread Starter
Instructor
Joined: Jul 2006
Posts: 206
Likes: 0
From: Washington DC
this is a manual so cant add any more gears. the rear end is a 3.36, not sure if thats stock or longer but i think its longer. A fuel cell would be optimal but i dont want to deal with stuff that doesnt work with the stock hardware.
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Thread Starter
Instructor
Joined: Jul 2006
Posts: 206
Likes: 0
From: Washington DC
it is tuned... if you check my profile though at my upgrade list you'll know why the mileage is so bad... im running a 750 SpeedDemon on a high comp setup 383. Its basically a 1/4 mile drag car.
Burning Brakes
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
me also in the camp what thinks you can tune a little better mpg. i didn't see anything in your profile that would keep that setup from getting at least 10 mpg, maybe better, besides the carb. you didn't say what kind of tranny and converter you have. you may be losing a lot with a low efficiency converter. have you checked the A/F ratio? maybe you can move it up a little without slowing down in the 1/4?
jmho
jmho
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,117
From: Crossville TN
5-6 mpg on the highway with 3.36 rear end gears is unbelievably bad. That carb needs to be tuned for highway driving efficiency (probably for 10-15% throttle) as well as for full WOT racing. Your carb needs some serious work done to it.....you should be getting 10-12 mpg, at least.
Drifting
Joined: Jul 2002
Posts: 1,943
Likes: 1
From: Rosemount MN
Get it on a dyno and have the A/F ratio checked, change jets until your entire powerband is within a 12-13:1 ratio. That should also get you max HP and Torque.
I'm running a larger cam (282), lower gears (3.55), same carb, 4-speed and still manage around 10-11 on the highway. 481 H.P./490 Ft/lb
I'm running a larger cam (282), lower gears (3.55), same carb, 4-speed and still manage around 10-11 on the highway. 481 H.P./490 Ft/lb
Thread Starter
Instructor
Joined: Jul 2006
Posts: 206
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From: Washington DC
im really curious to know what the actual power made by this motor is, the build (Ed Gaunt) claims it should be something over 450 hp. Ill update this post when I have some more info for you guys 
As an aside this thing diesels like mad when you turn it off... sometimes itll stumble and even kick back on for a few seconds then quit. The builder told me that he put in some kinda drain the removes power from the electrical system to help with that, my brother says it does it because its "dialed-in" for racing. Forgive my carb ignorance, im totally a fan of FI
As an aside this thing diesels like mad when you turn it off... sometimes itll stumble and even kick back on for a few seconds then quit. The builder told me that he put in some kinda drain the removes power from the electrical system to help with that, my brother says it does it because its "dialed-in" for racing. Forgive my carb ignorance, im totally a fan of FI
Last edited by karioth; Mar 19, 2007 at 05:51 PM.
