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What is the best option/s for tank replacement with importance placed to keep stock location and fill pipe position? What have others done and with what results? Many thanks!

Check the dimensions on the fuel tank for a fullsize Jimmy or Blazer. The one it the back of my 81 Jimmy looks close. Ford Bronco might be another option or Dodge Ram charger... Alot of older fullsize vans had rear mount fuel tanks as well.

Good hunting.

sailortaylor wrote:What is the best option/s for tank replacement with importance placed to keep stock location and fill pipe position? What have others done and with what results? Many thanks!

We have custom built the last several we have needed. Good results.

The fuel tanks on the 1985 to 1992 GMC Jimmy/Chevy S-10 blazer and Oldsmobile Bravada up to about 1995 will fit perfectly, but will be only 20 gallon. I believe the original capacity was 30 gallons. I was corercted here before as I thought it was originally 24 gallons.

Charles,
What would be the price if you built one?
Phillip in Tennessee Zip 37150

I've been told that the M101A1 trailers that have a gas tank underneath use the same tank as the M37 but (IIRC) have one extra filler tube. Some of the M101A2 trailers also have a gas tank but I don't know if it's the same.

Snowdad: You were correct. TM 9-8030 May 1955 page 18 says the fuel capacity is 24 gallons.

snowdad wrote:The fuel tanks on the 1985 to 1992 GMC Jimmy/Chevy S-10 blazer and Oldsmobile Bravada up to about 1995 will fit perfectly, but will be only 20 gallon. I believe the original capacity was 30 gallons. I was corercted here before as I thought it was originally 24 gallons.

Charles,
What would be the price if you built one?
Phillip in Tennessee Zip 37150

I haven't built one lately, so I'm unsure of the exact cost right now, material has gone up dramatically of late. Cost would be time, $65 per hour, plus material, plus welding supplies.

You would be cheaper off for sure to use a Chevy S-10 tank if that suits you. The actual usable capacity of the stock tank is 23 gallons, however the books says 24. A 30 gallon tank was never used on a M37 that I know of. The ones used on the generator trailers will work also.

PS.

Speaking of tanks. What are they usually made of? I've heard so much talk about them "rusting" out that I always thought they were made of steel so I was surprised when I actually looked at mine and found that it was made of aluminium!

sailortaylor, I know a couple of people that are parting out M-37s, if you'll PM me with you E-addy I'll forward it to them and see if they have a tank you can use.

This is what I had written down. Either the early 90's Chevy S10 or
a 75-85 Ford E-350 series van.

some of the ones in the generator trailers are plastic i have two of them

thejester wrote:some of the ones in the generator trailers are plastic i have two of them

Plastic would be the way to go - rust, grime, and grit won't bond to it, so cleaning the tank out will be alot easier.

My only advice would be to NOT swap in a tank from a rare or soon to be obsolete vehicle. Pick a tank from a common and popular vehicle. I would go with the S10 unit over the econoline van tank, as the S10's are still popular and have a good following. I don't think the same can be said of the van...

In this area, the most popular parts yards destroy the fuel tanks when the junk vehicles arrive. You will have to hunt for a place that will hold one or that doesn't cut huge gashes in the tanks.

I was surprised at this when went looking for a tank myself.

refit1701 wrote:In this area, the most popular parts yards destroy the fuel tanks when the junk vehicles arrive. You will have to hunt for a place that will hold one or that doesn't cut huge gashes in the tanks.

I was surprised at this when went looking for a tank myself.

No need for surprise, it's just more federally mandated crap being implemented to save the planet.

I feel so much safer....

MSeriesRebuild wrote:

refit1701 wrote:In this area, the most popular parts yards destroy the fuel tanks when the junk vehicles arrive. You will have to hunt for a place that will hold one or that doesn't cut huge gashes in the tanks.

I was surprised at this when went looking for a tank myself.

No need for surprise, it's just more federally mandated crap being implemented to save the planet.

Actually its a safety issue - big holes or gashes in the tanks mean the tank is empty of explosive fluids or vapours. Last thing any auto wrecker needs is to have the vehicle attempt to make orbit when the hot wrench is passed close to it...

New tanks are fairly cheap anyway. An old tank could have the same problems you're currently trying to get around. Tanks up here cost about 125 new (minus the sending units...) Its not worth paying half that or more at the wrecker for a questionable unit...