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#51 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,396
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Re: At my wit's end, please help
1000 RPM will probably high enough that you get some after-run unless you shut it off in gear.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#52 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,628
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Re: At my wit's end, please help
Well, that 1000 rpm didn't last long.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#53 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#54 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: At my wit's end, please help
Glad it is working again.
Now you need to keep it that way. You need to increase the size of the wire from the alternator to the battery to handle the increased load that the new alternator can put out. With the stock size charge wire you are limiting the ability of the new alternator to do its job at best and at worst risking another melt down if the alternator tries to push too much juice through too small of a wire. The stock wiring on most of the late model rigs with the high amp 12si that I have pulled apart have had 8-gauge wire and one with a longer travel path through the harness had 6-gauge. Pulling the wiring out of a new body style 88-up truck will give you the size you need with the correct ring terminal already in place on one end along with the terminal cover to match so that is where I would start unless it is easier for you to get new stranded 8-gauge wire and the right size ring terninals. Make sure the alternator case has a good ground back to the battery as well. This will help you get the most out of what you have. I run a case ground wire back to the battery just to make sure there is a good path of travel to complete the charge circuit to take full advantage of what the alternator can do.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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#55 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,628
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Per HO455's advice in post #32 "The quick answer is change the battery charging wire to a 10 guage and the alternator output wire to an 8 guage if your going for the 94 plus amperage alternator". This is what I did, and I soldered a proper ring terminal on the 8ga. wire for the alternator lug. I connected a ground wire to the alternator bracket for now, and will plan on running a ground wire back to the battery just to be sure.
EDIT: Just ran a new ground wire from the ground on the fender (which is connected directly to the battery) to the alternator.... one more little detail out of the way. Thanks for the good advice. As a couple members have said, there is a wealth of info in this thread and it should be helpful to others who might experience similar problems.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay Last edited by Stocker; 10-04-2018 at 09:19 PM. Reason: Added info |
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#56 |
Proprietor of Dale's Corner
![]() Join Date: Nov 2012
Location: Vacaville , CA
Posts: 16,101
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Re: At my wit's end, please help
I'm glad you have it up and running with a good charge.
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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#57 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,628
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Re: At my wit's end, please help
I am too, Dale.... I am too. It was an easy mod, once I got the right part & the right procedure. Had I been left on my own without help from board members, I could have screwed things up royally!
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#58 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,117
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Good work getting the job done right!
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#59 |
Mr. Cheyenne
![]() Join Date: Jun 2020
Location: Kyle, Texas
Posts: 1,688
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Re: At my wit's end, please help
okay, I see this in my very near future.... I guess I need to round up the alternator (hope I can find it still at O'Rileys) and some proper wire.
Thank you Stocker for pointing this out on the other thread created today by 6t727t2.
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Richard '72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT SBC 350 | TH350 | LWB | AC | Buddy Seats Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim |
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#60 |
Mr. Cheyenne
![]() Join Date: Jun 2020
Location: Kyle, Texas
Posts: 1,688
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@Stocker - seeing you have a 72 that is likely similar to my 72 (though you are a K20) - is this what you got from O'Riley's? Just wanting to confirm the bolt up/clock stuff/wiring connections.
For the record, my C10 SBC350/TH350 is all stock under the hood (other than a modern A/C). All V Belt stuff from factory. Also, in the wiring photos, the one were it goes to "3-wire" - seems a lot of wires are gone! Also what is/where that connector in those two photos - is that the External Voltage Regulator connector??
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Richard '72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT SBC 350 | TH350 | LWB | AC | Buddy Seats Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim |
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#61 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Look at this thread. It's all explained here. Let me know if you need anything. ![]() http://67-72chevytrucks.com/vboard/s...d.php?t=737824
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#62 | ||
Mr. Cheyenne
![]() Join Date: Jun 2020
Location: Kyle, Texas
Posts: 1,688
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Re: At my wit's end, please help
Quote:
Looks like 3:00, 9:00, 12:00 - does not matter? The link for O'Riley's is still good though it seems it is easier to get a home delivery (Ultima 94 Amp Alt / Part# R111785A / Line ULT / UPC 190037039484) DeadheadNM thank you for your example in that other thread (post #15) http://67-72chevytrucks.com/vboard/s...1&postcount=15 And I found this thread from Stocker about the part number, so that is now confirmed and also a bit after that I see O'Riley's will take my 72 Alt for the Core charge - YAY! http://67-72chevytrucks.com/vboard/s...46&postcount=6 Quote:
https://www.americanautowire.com/sho...conversion-kit
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Richard '72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT SBC 350 | TH350 | LWB | AC | Buddy Seats Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim Last edited by Rich72C10; 01-07-2021 at 01:11 PM. |
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#63 |
Mr. Cheyenne
![]() Join Date: Jun 2020
Location: Kyle, Texas
Posts: 1,688
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Re: At my wit's end, please help
Well, I called up Mark at M.A.D. Enterprises. That fellow can TALK - I was on the phone for a hour and perhaps 3 minutes was me ordering is full kit and passing my CC/Address to him. I am pretty sure he is a long lost brother of my dad and going on explaining things!
Unless you have a budget and want more than you'll likely need, perhaps $250 for a full kit is not for you. Personally, if I am breaking apart wiring harnesses in the engine bay and running new wire I want to do it right and once! Last thing I want to do if muck of my power in my truck!
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Richard '72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT SBC 350 | TH350 | LWB | AC | Buddy Seats Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim |
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#64 |
Registered User
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,699
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Re: At my wit's end, please help
I've been following all these threads/posts about alternators.. "Which one do I need?"... "which amperage output do I look for?".. I see a lot of emphasis placed on the "clocking" of an alternator.. The "clocking" of an alternator is a totally unnecessary consideration when making your selection as the "clocking" can be easily changed.. When these alternators are assembled, all the internal components -- stator, rotor, diode bridges, voltage regulator, etc. -- are assembled into the rear case half.. The brushes are placed in the brush holder in the fully retracted position and held by a plastic rod. This rod passes over the end of the brushes and sticks out through a conveniently placed hole in the back of the case. The rotor shaft is inserted into the rear bearing.. The two case halves are slid together in what ever "clock" position is called for.. The four bolts are installed and the plastic rod is removed, allowing the brushes to make contact with the brush rings..
Buy/select an alternator of whatever amperage you desire and/or need.. Remove those 4 bolts holding the case halves together.. Gently and slightly separate the case halves about 1/8" - 3/16" leaving the stator fully seated in the rear half and the rotor (the part/shaft that has the pully on it's end) partially seated in the rear case half.. Rotate the front case half to the proper "clock position" for your application.. Reseat the case halves and replace the bolts.. If you slip up and separate the case halves too far and the brushes slip off the brush rings, just fully separate the case halves, reinsert the brushes into the brush holder.. The brushes can be held in place using the red plastic tube that comes with a chemical spray cleaner.. Position the case halves in the needed "clock position" and push the case halves back together.. Install the four bolts, remove the plastic tube, and you're good to go.. |
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