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You are watching: What size battery for 454 big block

my chevelle has been sitting because that over a year and also the battery wouldnt take a fee so i went and bought a brand-new one. It was a cheapo distinct for 39.95$ at wal-mart. Its only a 630 cold and 750 heat cranking amps. I have had actually trouble beginning the vehicle like the battery is dead it will certainly crank yes, really slow. If i jump it if fires right up. I understand the alternator is working, so im assuming the battery isnt strong enough, BTW this is a 396BB thats its trying come crank over, more than likely 10.25:1 compresion or so.Thanks,Todd
Ya that\"s a pretty tiny battery because that a high compression big block. I have actually an 850cca battery in my 10.5:1 454 and as long as it\"s warm outside it has no problem, however as soon as the drops listed below 0 (celsius) you can tell the isn\"t able come crank as fast.However girlfriend may likewise want come look at the condition of her starter. If the windings room shorting out to the instance of the starter, it will seem prefer battery is week once it\"s really the starter.I\"d shot putting in a different battery with much more cca if you have one around, and also if the fixes the problem, then obtain a brand-new battery because that it, if that doesn\"t fix it, my money is ~ above the starter.------------------Chris Dagenais\"71 Malibu through a home constructed 454! For whatever you do, this burnout\"s for you.The environment-friendly Monster
Chris touch on the two factors involved...the compression and condition the the starter. The mean GM V8 through 9:1 compression and a good starter will certainly pull around 175-250 amps while cranking. Obviously, the size of the battery will determine just how long you have the right to be in the \"crank\" mode. Bottom heat is that a 630 CCA battery is sufficient for a car that is reasonable easy to begin in cold weather.
Todd most all auto components stores will certainly test you device for FREE. There space a the majority of batteries sold, when the real trouble is the starter, back a negative starter is hell ~ above a old battery and can kill it.A new battery will sometimes solve the trouble of a poor starter due to the fact that they space fresh and capable of placing out more amps, however eventually the bad starter will suck the life the end of them. Favor was mentioned over a great starter need to not draw much more than around 220 amp because that a high compression engine. Many V8 engines will only draw about 180 amps. Likewise some starters will ground out when warmth or hot, so obtain it tested when warm and also crank it for a while. When you say it will crank with the help of a jump, is one indication it is sucking more amp than it must be. Two batteries supplying twice as much amperage as needed.Remember the check is free, so walk for it.

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