#796831 - 05/24/10 11:48 PM
Re: CS144 Alternator Conversion
[Re: shmil]
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Joined: Dec 1999
Posts: 6,890
Z65_Paul
Administrator 20+ Year
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Administrator 20+ Year
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McDade, TX
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The sense circuit (when used) is intended to be a remote sense of the voltage at the battery, not a local sense of the alternator output. I haven't looked into the details of the sense circuit, but I presume it is a high impedance input, meaning the voltage drop from the sense line is almost nothing. That way the voltage at the battery is what the sense circuit sees at the sense input to alternator. If sense was measured at the alternator battery output, the voltage drop (IR loss for those who understand electrical stuff) across the battery cable would not be taken into account. By having a remote sense, the length and gage of cable between alternator and battery (cable resistance), and the amount of current being drawn through that cable are irrelevant. The alternator supplies whatever power is required to keep the battery within the specified voltage range, as sensed remotely.
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#804835 - 06/23/10 07:13 PM
Re: CS144 Alternator Conversion
[Re: Z65_Paul]
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Joined: Jul 2004
Posts: 709
sslover85
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Killeen, Texas
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Ok guys I have just left the yard and picked up 2 105 amp CS altenators. I used the first page as a guide and I got one off of an Impala/Caprice and the other one off of a Lumina Van. Here is where my problem lies. My car doesnt have a plug on the car, instead it has a wire bolted to the lug on the back that bolts to the battery and also a small wire that's clipped into terminal 2 and it also is bolted to the lug on the back. Help!!! What do I need to do???
 85 SS Sold 80 El Camino Sold 62 Chevy Impala 96 Impala SS
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#804839 - 06/23/10 07:19 PM
Re: CS144 Alternator Conversion
[Re: Z65_Paul]
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Joined: Jul 2004
Posts: 709
sslover85
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Killeen, Texas
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I know it sounds confusing but I looked at the original setup again and that's how it is. The funny thing is my voltage guage works, it actually saved me once. The car was wired like this when I bought it over 7 years ago.
 85 SS Sold 80 El Camino Sold 62 Chevy Impala 96 Impala SS
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#808406 - 07/07/10 01:15 PM
Re: CS144 Alternator Conversion
[Re: AG]
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Joined: Dec 2006
Posts: 313
Lincoln7
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hampton roads, VA
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I gave Napa the part number 'EC82' and they pulled it right up. Good job finding alternate pn's, though.
86 MCSS 400sbc, T56, 8.5" 3.90 TrueTrac, Street/strip/road race 12.1 @ 117mph, 24 mpg
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#808444 - 07/07/10 04:52 PM
Re: CS144 Alternator Conversion
[Re: AG]
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Joined: Oct 2003
Posts: 1,479
87ChooChoo
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las Vegas, NV
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The wire harnesese are also available at the bottom of the page on this link: http://www.alternatorparts.com/CS-144_Special_offer.htm
85 El Camino Choo Choo with L31 350 Crate, TPI, Serp, TES Headers, GN 200-4r, 3.73 8.5 GN Posi, Acura Buckets, '04 GP Console, Electric Mirrors, Electronic HVAC, ZQ8 wheels, Blazer front brakes, LS1 rear brakes, and more.... https://sites.google.com/site/darbyselky/home
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#811591 - 07/21/10 06:55 AM
Re: CS144 Alternator Conversion
[Re: 87ChooChoo]
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Joined: Oct 2006
Posts: 1,799
JAWSS
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Ft. Hood, TX
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I was wondering why everyone is converting and forcing the original CS144 alternators in when this is available. Its a one wire conversion and ut seems to fit like stock. http://www.jegs.com/i/JEGS/555/10123/10002/-1
 86 Monte Carlo SS T-top 69 Cutlass S Convertible 70 Chevelle Malibu (Second owner, grandma car) 12 Cadillac CTS-V Wagon
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#811799 - 07/22/10 03:39 AM
Re: CS144 Alternator Conversion
[Re: JAWSS]
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Joined: Apr 2005
Posts: 4,694
84supersport
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Louisville, KY
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Because I paid $20 for the working alternator with 30-day warranty and then another $20 for the adapter harness through NAPA. And in my opinion, there wasnt any forcing. Only modification I did was open up the groove in the bracket for adjustment some so the bolt I used would fit and slide back and forth for belt tension. Everything thing else fit great, I just installed the upper bracket loosely before dropping the alternator in and then tightened everything up. It wont fit correctly with everything already tight.
84 Monte SS stolen September 2012. 077 DFE Jefferson County KY plate. $2500 reward. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood.  Matt
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#867073 - 04/14/11 08:34 PM
Re: CS144 Alternator Conversion
[Re: 84supersport]
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Joined: Jul 2004
Posts: 709
sslover85
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Killeen, Texas
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Can I hook these up to an aftermarket volt gauge. I cannot find my alternator wires. Help!!! I am ready to do this swap I've been holding off too long. I've already bought the adapter from napa.
 85 SS Sold 80 El Camino Sold 62 Chevy Impala 96 Impala SS
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#942094 - 08/13/12 08:26 PM
Re: CS144 Alternator Conversion
[Re: mert]
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Joined: Oct 2008
Posts: 184
tall t-top
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Posts: 184
San Antonio, Texas
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Another source for these alternators is out of 96-98 Buick Le-sabres. It has a extra mounting point on it that could be possibly used for mounting or cut off. The Le-sabres also have the metal fan for a more original look.
I found the adapter connectors at other auto parts store for various prices: Autozone- P/N 817-$32.99 Advance Auto Parts- P/N 84731-$21.79
For the top bolt i used a wing nut. the wing hits the bracket and keeps it from turning while you tighten the bolt down
Andrew
86 MC SS t-top, 305 with port and polish, Edlebrock Performer Intake, Flowtech Afterburner headers, duals to Jeg's chambered mufflers, Jeep steering shaft, Turbo Eclipse seats (Weekend toy but a project at the moment) 91 C1500 extended cab, TBI 350, 2in suspension lift, Jeep steering shaft. (Daily driver) 2012 Mitsu Outlander Sport (wife's car)
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#944449 - 09/05/12 04:01 PM
Re: CS144 Alternator Conversion
[Re: gmachinz]
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Joined: Oct 2008
Posts: 184
tall t-top
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Member

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Posts: 184
San Antonio, Texas
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NEWS FLASH!!!!!!!!!!!!!!
On Rockauto .com: look up Dorman P/N 84731
This is the SI to CS adapter harness.
It is only: $9.06!!!!!!!!!!!!!
looking at the adapter from RockAuto, Advance Autoparts, and Autozone, they don't seem to have the required resistor like the one from Napa has. Just a observation. Would it be a issue to just install a resistor inline.
ok i made a error in my rush to post prices on the other connectors, I neglected to look closely. On the adapter from RockAuto, Advance and Autozone the pins in the connector on the CS side are wrong. NAPA one has them in the correct spots (1 and 3 position) but the others don't (1 and 2 position).
Andrew
86 MC SS t-top, 305 with port and polish, Edlebrock Performer Intake, Flowtech Afterburner headers, duals to Jeg's chambered mufflers, Jeep steering shaft, Turbo Eclipse seats (Weekend toy but a project at the moment) 91 C1500 extended cab, TBI 350, 2in suspension lift, Jeep steering shaft. (Daily driver) 2012 Mitsu Outlander Sport (wife's car)
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#944450 - 09/05/12 04:05 PM
Re: CS144 Alternator Conversion
[Re: tall t-top]
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Joined: Dec 1999
Posts: 12,379
PB86SS/87LS
Administrator 20+ Year
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New Berlin, WI
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If anyone is looking for the SI to CS harness I have a used one available, if interested PM me for more info.
- 86'SS 383 CCC QJet- BRF 2004r-8.5" 3.42 - 87'LS 350 MAF/SD TPI- CRF 2004r-7.5" 3.42 - 81'Grand LeMans Safari Wagon 350 CCC Q-Jet/CZF 2004-r/8.5" 3.73 - 07'TBSS Stockish daily driver
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#945236 - 09/13/12 02:04 PM
Re: CS144 Alternator Conversion
[Re: PB86SS/87LS]
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Joined: Mar 2009
Posts: 78
bnelson85ss
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Waunakee, WI
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Great guide. I just finished doing this swap last night on my 85. I ordered a replacement alternator for a 96 impala. I used the napa harness EC82, and swapped pulleys over from Mr. gasket kit #6808($20). I was able to retain the stock bracket by loosening one of the bracket bolts and adjusting with a mallet. Everything bolted in and aligned without issue.
1985 Monte Carlo SS
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#1056927 - 04/16/18 08:24 AM
Re: CS144 Alternator Conversion
[Re: jac1599]
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Joined: Jan 2008
Posts: 1,221
FinallySS
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Nice Sunny Hawaii
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If you are tired of having someone hold the alternator while you tighten the belt, you can tap it using 7/16 tap, either fine or coarse. I used 7/16-20x3/4 bolt and it's holding fine. You probably have to grind the bolt slot for the bracket little wider if you're using the stock bracket. I used both file and Dremel, and only took about 15 minute (maybe little less) to make the slot bigger. Just make sure you do it for the length of the slot so you won't have any trouble in the future when you have to go beyond where you have the bolt right now.
1986 Silver MCSS - Poly bushing and Hotchkis spring w/Bilstein, Posi w/3.73, MSD 6-AL, E-Brock 600cfm, Aluminum 2-row radiator. 1986 Black MCSS - R.I.P............Finally.
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