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Re: What size alt?
61A is the largest alternator offered in these trucks and is more than adequate for a loaded truck.It is also the maximum windings that will fit the original case.I found this out when having my alternator built for use with a snow plow.I had the 49A and that highest rating he could get out of it was equal to GM`s 61A.You`d have to go to the later right-side alternator.When converting to the later two wire internal regulator type alternators you`ll most likely be jumping up in amp rating.I ended up using one from a 6.2 diesel which is 100A.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"
GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim
"Don't call me a redneck. I'm a rough cut country gentleman"
R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
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