Quote:
Originally Posted by Tom Pugh
I'm looking for an 800 CCA battery that will fit in the stock location of a '67 GTO. I'm fighting a hot start issue. The current 600 CCA battery is not getting it done. The best I've found so far is one with 720.. I'm using a new mini starter, heat wrapped., New 1/0-gauge battery cables are on order. What are you guys running?
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What was the battery capacity when that car was sold in '67? About 400 CCA?
If 600 CCA isn't getting it done, there is something WRONG. You don't need a bigger CCA battery,
you need to figure out the actual problem.
Which MIGHT be that your "600 CCA" battery has failed and only has 200 CCA when tested. Which is where I would start--a REAL load-test on your battery.
This is NOT the same as the quickie-test at a parts store, where they bring out a hand-held electronic device, hook two thin cables to your battery, and the machine plays Van Halen at the battery until it submits. Then it prints-out the results on thermal paper like a grocery-store receipt.
You're looking for a shop that has a bigass machine likely on a roll-around cart, with heavy "jumper cable" connections, that draws real power from the battery to assess it's condition using the built-in voltmeter and ammeter. A competent shop uses the same piece of equipment to verify starter amperage draw, and alternator voltage and amperage output. This same equipment can then do voltage-drop testing on your main battery cables, and the cable on the alternator output.