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Old 04-27-2007, 02:02 PM   #1
smonty
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Can U use a 73-91 suburban gas tank on an 87 Blazer?

Can U use a 73-91 suburban gas tank on an 87 Blazer? If so, is there any modifications necessary to the Blazer Frame. Need to increase the fuel capacity in my blazer. Any suggestions would be appreciated. Thanks! Ernie
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Old 04-27-2007, 02:29 PM   #2
Jonboy
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Re: Can U use a 73-91 suburban gas tank on an 87 Blazer?

87-91 Sub tank will work (has correct baffles for fuel injection). Use corresponding sender and fuel tank straps also, and it should bolt right in.
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Old 04-27-2007, 08:02 PM   #3
smonty
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Re: Can U use a 73-91 suburban gas tank on an 87 Blazer?

Thanks for the info!
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Old 04-27-2007, 10:49 PM   #4
longhorn71
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Re: Can U use a 73-91 suburban gas tank on an 87 Blazer?

a 25 gallon tank should measure 29"x28"x11"
a 31 gallon tank should measure 29"x28"x13"

the suburbans ran the same tanks but they also could have a 40 gallon tank

the 40 gallon tank measures35"x29"x13

if you get the 73-86 tank you will need to keep it above the 1/4 tank level because they have no baffles in them.

I have never tried the 40 gallon tank in a blazer and i do not think there is enough room for it.
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Old 04-28-2007, 06:37 AM   #5
smonty
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Re: Can U use a 73-91 suburban gas tank on an 87 Blazer?

The 31 gallon tank sounds like my best bet. Thanks! Ernie
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