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| | | | Joined: Oct 2019 Posts: 449 'Bolter | | 'Bolter Joined: Oct 2019 Posts: 449 | What are the pros and cons of internally vs. externally regulated alternators? I think I'm correct in saying that the external and the voltage reg. is more prone to issues, but on the other hand I am trying to remain as stock as possible. The 1968 292 engine is installed in a 1965 C10.
I would appreciate any recommendations
Thanks
Kevin
1965 Chevy C10 Longbed Fleetside
| | | | | Joined: Feb 2004 Posts: 29,826 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,826 | RUN- - - -do not walk away from an external regulator. They were marginal 50 years ago, and time has not improved the system! A Delco 10SI internal regulated alternator is just about the only way to go! The only thing better would be a commercial Leece-Neville at three times the price.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Oct 2019 Posts: 449 'Bolter | | 'Bolter Joined: Oct 2019 Posts: 449 | Big 10-4 Thanks AGAIN Jerry
Kevin
1965 Chevy C10 Longbed Fleetside
| | | | | Joined: Oct 2019 Posts: 449 'Bolter | | 'Bolter Joined: Oct 2019 Posts: 449 | Follow-up question: I could not find in the shop manual the amperage for the alternator. What amperage alternator is needed for a 292?
Kevin
1965 Chevy C10 Longbed Fleetside
| | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Basically it's not a question of what output you need for a 292. It's what output you need for accessories. Just buy Delco 334-2114, A "three" wire alternator. 63A
Last edited by bartamos; 06/25/2025 7:25 PM. Reason: took out the Amazon reference
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Oct 2019 Posts: 449 'Bolter | | 'Bolter Joined: Oct 2019 Posts: 449 |
Kevin
1965 Chevy C10 Longbed Fleetside
| | | | | Joined: Jan 2019 Posts: 2,242 Herder of Cats, Goats, and Sheep (moderator) | | Herder of Cats, Goats, and Sheep (moderator) Joined: Jan 2019 Posts: 2,242 | Be aware that a decent number of the lower current 10-SI designs will not charge at idle RPMs.
I went through several of them before upgrading to a 105A on my 58. The higher current alternators start charging at lower speeds.
Depending on what your electrical load and normal driving habits, that might or might not be an issue for you. I ran into issues with the electric fan running down the battery when stuck in traffic for extended periods. | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Chevy used 334-2114 from 1973 on up into the 80's on 6cyl. No issues. It's OE.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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