I have a 1983 k5 blazer that I got for 300 running and I'm just curious what size gas tank I have. Its a stock 305 with a 700r4 with what I believe to the 208 transfer case if that matters it is 4x4 btw. This is my first time poisting a thrd so thanks for any help u have to offer.

 

Could be either a 25 or 31 gallon tank. You have to look at the RPO (SPI) label in the glove box to determine which tank you have. With the 305, it is likely that you have the 25 gallon tank.

 

Cool thanks so much I would have just filled itup but can't drive it yet still have to smog it .