Alternators
Thread Starter
Race Director
Joined: Jan 2007
Posts: 10,682
Likes: 696
From: Danville Illinois
2025 Corvette of the Year Finalist - Modified
2024 C3 of the Year Winner - Modified
2021 C3 of the Year Finalist - Modified
2019 C3 of Year Finalist (appearance mods)
Alternators
After 40 years and 44000 miles the alternator will get some attention. Will drop it off at the repair place tomorrow.
Its a 61amp but what does the other id marks represent?
These are not the stock exhaust manifolds and cant remember where i got them, the alt mount pivot assembly just looks odd but it works. Any pics of a stock 75 alternator mount would be welcome.
Are there any mods for alternators other than brushes/bearings?
Its a 61amp but what does the other id marks represent?
These are not the stock exhaust manifolds and cant remember where i got them, the alt mount pivot assembly just looks odd but it works. Any pics of a stock 75 alternator mount would be welcome.
Are there any mods for alternators other than brushes/bearings?
Last edited by Mod75; Dec 21, 2014 at 02:47 PM.
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
The bracket is a standard alternator mount for your car and was used widely by Chevrolet. The bushing in the (rear) bracket is "self-centering" and allows for variations in thickness of the alternator attaching point. It ensures that the forward position of the alternator will remain consistent regardless of the castings mounting point thickness.
Good luck... GUSTO
Good luck... GUSTO
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
After 40 years and 44000 miles the alternator will get some attention. Will drop it off at the repair place tomorrow.
Its a 61amp but what does the other id marks represent?
These are not the stock exhaust manifolds and cant remember where i got them, the alt mount pivot assembly just looks odd but it works. Any pics of a stock 75 alternator mount would be welcome.
Are there any mods for alternators other than brushes/bearings?
Its a 61amp but what does the other id marks represent?
These are not the stock exhaust manifolds and cant remember where i got them, the alt mount pivot assembly just looks odd but it works. Any pics of a stock 75 alternator mount would be welcome.
Are there any mods for alternators other than brushes/bearings?
I wouldn't let it out of my sight. Most overhaul shops do not return the same unit as you hand in and you end up losing an original component.
It takes maybe 1/2-1 hour to overhaul this type of alternator. I'd do it myself.
Thread Starter
Race Director
Joined: Jan 2007
Posts: 10,682
Likes: 696
From: Danville Illinois
2025 Corvette of the Year Finalist - Modified
2024 C3 of the Year Winner - Modified
2021 C3 of the Year Finalist - Modified
2019 C3 of Year Finalist (appearance mods)
Thanks for the info Mike, the car was built December 12th 74 so its a real early 75.
Thread Starter
Race Director
Joined: Jan 2007
Posts: 10,682
Likes: 696
From: Danville Illinois
2025 Corvette of the Year Finalist - Modified
2024 C3 of the Year Winner - Modified
2021 C3 of the Year Finalist - Modified
2019 C3 of Year Finalist (appearance mods)
Update.
45.00, new bearing/brushes and miss stuff, bead blasted, looks like new.
Excellent job
45.00, new bearing/brushes and miss stuff, bead blasted, looks like new.
Excellent job
Burning Brakes
Joined: Dec 2006
Posts: 973
Likes: 85
From: Hoopeston, Illinois
Thread Starter
Race Director
Joined: Jan 2007
Posts: 10,682
Likes: 696
From: Danville Illinois
2025 Corvette of the Year Finalist - Modified
2024 C3 of the Year Winner - Modified
2021 C3 of the Year Finalist - Modified
2019 C3 of Year Finalist (appearance mods)
Good point, at least i did get a new show pusher for the driveway.
Excellent site here http://vermilionweather.com/
Pro
Joined: Aug 2014
Posts: 508
Likes: 59
From: Oscoda Michigan
Just curious I guess, are your cylinder heads stock or were they replaced with ones which do not have mounting boss/bolt holes? On my 75' the alternators lower mount bolts directly to the head. Glad you got your original taken care of. It still amazes me that I can order all the parts for starters and alternators and get them out of the Detroit warehouse. Mike
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Thread Starter
Race Director
Joined: Jan 2007
Posts: 10,682
Likes: 696
From: Danville Illinois
2025 Corvette of the Year Finalist - Modified
2024 C3 of the Year Winner - Modified
2021 C3 of the Year Finalist - Modified
2019 C3 of Year Finalist (appearance mods)
Just curious I guess, are your cylinder heads stock or were they replaced with ones which do not have mounting boss/bolt holes? On my 75' the alternators lower mount bolts directly to the head. Glad you got your original taken care of. It still amazes me that I can order all the parts for starters and alternators and get them out of the Detroit warehouse. Mike
No my heads are not the original ones, from a 68 i think and there is no provision for bolting to the head. When i did the head swap 38 years ago i just went to the boneyard and looked for exhaust manifolds that has a provision for the Alt mount.
Pro
Joined: Aug 2014
Posts: 508
Likes: 59
From: Oscoda Michigan
P.S. I love the look of your car, and its history, very cool
