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Old Mar 28, 2007 | 07:24 PM
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My 71 calls for a 74 series battery. Interstate and delco don't make a 74 anymore. They substitute it with a 78 series that doesn't fit in the battery box correctly. Who makes an American made battery with plenty of amps that fits? I have higher compression than stock and I want enough power to crank it. Thanks a lot.
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Old Mar 28, 2007 | 07:31 PM
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Try a 79 series. It should be the same physical size as the 74. It is 880CCA where I think the 74 was over 900, but that should still be plenty.
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Old Mar 28, 2007 | 07:40 PM
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Thanks. Does delco make a 79? My brother works in the parts at a gm dealer. He got me the 78 series that replaced my 74 and it was only 650 amps. I'll have him take it back and get a 79.
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Old Mar 28, 2007 | 07:59 PM
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pull the old battery, go over to sears or napa and they will match the size & amp output.
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Old Mar 28, 2007 | 08:13 PM
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Code:
Model 	  BCI 	    Application 	Volts 	Res 	CCA 	L 	W 	H 	Lbs 	Price

74-6YR 	  74 	    GM Side Term. 	12 	105 	555 	10.8 	6.9 	8.1 	39 	1-800-ACDELCO
75-5YR 	  75 	    GM Side Term. 	12 	90 	550 	9.5 	6.9 	7.3 	32.4 	1-800-ACDELCO
75-6YR 	  75 	    GM Side Term. 	12 	90 	650 	9.5 	6.9 	7.3 	32.2 	1-800-ACDELCO
75-7YR 	  75 	    GM Side Term. 	12 	100 	735 	9.5 	6.9 	7.3 	35.3 	1-800-ACDELCO
76-7YR 	  76 	    GM Side Term. 	12 	150 	975 	12.7 	6.9 	8.1 	54.9 	1-800-ACDELCO
78-5YR 	  78 	    GM Side Term. 	12 	100 	550 	10.9 	6.9 	7.3 	35.1 	1-800-ACDELCO
78-6YR 	  78 	    GM Side Term. 	12 	110 	675 	10.9 	6.9 	7.3 	38.1 	1-800-ACDELCO
78-7YR 	  78 	    GM Side Term. 	12 	120 	770 	10.9 	6.9 	7.3 	38.1 	1-800-ACDELCO
78DT-6YR  34/78     GM Dual Term. 	12 	115 	730 	10.9 	6.9 	8.1 	39.2 	1-800-ACDELCO
78DT-7YR  34/78     GM Dual Term. 	12 	115 	850 	10.9 	6.9 	8.1 	42.3 	1-800-ACDELCO
78H-6YR   78 	    GM Side Term. 	12 	110 	675 	10.9 	6.9 	7.3 	38.1 	1-800-ACDELCO
79-6YR 	  79 	    GM Side Term.       12 	140 	880 	12.1 	6.9 	7.4 	48.3 	1-800-ACDELCO
85-7YR 	  85 	    GM Side Term.       12 	90 	630 	9.5 	6.8 	8.1 	32.8 	1-800-ACDELCO
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Old Mar 28, 2007 | 11:09 PM
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Thanks for the help.
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