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Joined: Jan 2019
Posts: 328
P
'Bolter
'Bolter
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Joined: Jan 2019
Posts: 328
Hello All,

Would anyone know the correct AC Delco model or GM number for a 2 post, 6 volt generator on a 1939 VC model truck? Engine has a 6-1/8" mounting bracket...
Thank you.


Philippe Jeanneau
Joined: Sep 2001
Posts: 29,269
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
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Joined: Jan 2019
Posts: 328
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'Bolter
'Bolter
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Joined: Jan 2019
Posts: 328
Hello there,

Thank you for the link, looks like a 934 F should be the one... I better double check the voltage regulator and starter also.


Philippe Jeanneau
Joined: Apr 2007
Posts: 1,038
L
'Bolter
'Bolter
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Joined: Apr 2007
Posts: 1,038
I read that link as indicating the standard generator for a heavy duty truck as 948R, with the 934F as an R.P.O (regular production option). And, the standard heavy duty truck has no voltage regulator, which means it would have a voltage cutout only. The asterix in the R.P.O. box takes you to the bottom of the page which indicates you could get a voltage regulator with current control. Bottom line is you have more choices to keep it "correct". Kent


1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix
Joined: Jan 2019
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'Bolter
'Bolter
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Joined: Jan 2019
Posts: 328
Hello Kent, I see how I missed that, so the difference between the "Regular" 948R, and the "Regular Production Option-RPO" 934F option is a single post with cutout, or a 2 post unit with a voltage regulator? My other 39 (VB) 1.5 ton has a 948R with a cutout, this one has a voltage regulator that appears original...I will have to inspect what is left of the wiring harness... The other clue is the generator mounting bracket which is about 6-1/8" long...


Philippe Jeanneau

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