I don't wanna have to take out my battery because I have fuses attached to my battery and I dont wanna mess up my electronics, rather have a professional do it. But the problem is if I went to my battery shop they only have the 34/78 in stock and no 25/75 sizes in stock. Now if I said i wanted a new battery they would try to put in a 34/78 size and I dont think it will fit, then they have to put in my old one back, then order a 25/75 size then all of that will be a waste of time. Now if someone with a similar blazer has a 34/78 size under the hood then maybe I would know it will fit for sure, then i can go there one time only and get it swapped with a 34/78 size battery inside of all that other test fitting and removing and replacing the old battery. thanks.

 

had my battery tray out, figured i would go ahead and measure it for you. at the narrow points; 6 3/4", 10 1/2". the tray does get wider at points, but this would be the size of thelargest battery that could fit in there. you could double check this by running a tape on yours. you should be able to measure your tray with out removeing your battery (it will be tight, but can be done). i hope this helps you. good luck with your voltage problems, i have my own that i cant seem to tackle.

 

Yeah, I measured my tray. It will fit barely. I mean by less than an inch. Thanks for all the help. Well, when i get that alternator replaced and my current battery has enough juice in it, I will keep it til it dies, then get that 34/78 yellow top. thanks again.

 

It will fit , I have one in my 01 ZR2 but it's a red top ..

Zed

 

Thank you for checking. Yeah, but wondering about the height and if hood will close, I guess if you are good I will be good. Thanks again.

 

If you are still questioning this, consult Optima's website...

Optima Battery Dimensions

You should have no problems with your hood.

 

Yeah, I went to the site this morning and wrote it down, the height, looks good as far as height, width, and length. Looks like the 34/78 will be my next battery. thanks.

 

@lionel2 , Proof , just for you

 

thanks for the proof. Thanks for all the help guys.