Last year at the Spring Mecum auction, which is held here in Indianapolis where I live, I reviewed an exceptionally nice survivor, very low mileage, Dodge Daytona "wing" car (okay, okay...not a Ď69Z Camaro which is my 1st love, but I really enjoy all muscle cars...particularly survivors). I talked to the owner and the only non-original component under the hood was the battery. He keeps the original in the trunk. He purchase a very nice reproduction jell battery but I do not recall where. I do remember that it costs about $450.
Has anyone had experience with the new repro jell batteries which are supposed to be very reliable?
Years ago, I purchased a very nice dated code Y77 side post battery for my 05A '69Z from New Castle. As Jerry M explained, it was not 100% technically correct as it had 3/8-16 terminals on both the Pos & Neg. This battery was the only one I could find at the time, and could not fine the correct reverse polarity repro cables to be 100% correct. Did I recall reading (perhaps some fictional stories) that GM dealers in service after the original car sale, would replace the original Y55 side post reverse polarity battery with a Y77 and changed out the cables?
My repro battery lasted for about 3 - 4 years (I kept it on a battery maintainer anytime the car was not being driven for a period). I cell died and I could start the car to get to a car show, but it was DOA when I tried to drive home from the show. I have a good reliable Delco battery in use now and the "neutralized" repro is the trunk for show only.