awesome.

1969-70 Super Sport Chevelle would've come with the standard top post R59.

Looking at that chart, The Y77 and Y87 are almost Identical other than the Y77 having one smaller bolt thread on one terminal !

Yep 3/8" & 5/16" terminal bolts were intended to prevent cross cabling.You needed to have 2 different size wrenches on hand,but was inconvenient,so many just used pliers/channel locks or Vise grips to turn those suckers and strip their heads.That's why the optional 1970 R79, that had em also,went away in favor of the newly designed R89 in 1971,which didn't.

I have pics available to those interested.

Bump with a lower price - now $375.

can you send me some pictures

Still available, can deliver to MCACN.

The Feb built '70 SS 454 car I bought in '73 had 2 different size hex head bolts on the side terminals. So that car would have come with the optional battery ? Had a huge tray too. I bought a new design, high output 1,000 amp battery from Sears in about '79 that was 12" long and it fit the tray. Too bad the batteries became famous for exploding as mine did...:eek2:

Yes,the new optional RPO T-60 side terminal Battery was standard equipment included on the new 1970 LS-5 & LS-6 engines.
It was an extra cost option on the other engines.