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#1 |
Registered User
Join Date: Oct 2010
Location: Kingsburg, Ca.
Posts: 92
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Small Block starter motors
Is there any reason you wouldn't use a '71 vintage starter motor on an L31 engine? The parts store price for a later model starter is quite a bit more than for a '71 350.
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#2 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Small Block starter motors
I do believe you have to go with the starter for the L31 due to the flywheel have different amount of teeth.
Someone will chime in and let us know for sure. |
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#3 |
Registered User
Join Date: Feb 2016
Location: Trenton,Ontario & South Carolina
Posts: 755
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Re: Small Block starter motors
I run a new GM gear reduction starter from the HI PO book,the advantives of this starter is clearance,no eat soak and will spin engine over faster.
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#4 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,151
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Re: Small Block starter motors
The late gear reduction starters are so much more reliable. Worth the extra.
__________________
'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#5 |
Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,337
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Re: Small Block starter motors
I installed a gr starter last summer on my 350. Less than $100.00. Easy install, spins engine over super fast but sounds terrible doing it.
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71 C-20 07 Magnum RT AWD |
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#6 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
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Re: Small Block starter motors
Mostly because the early starters suck in comparison. You can get a late model style starter on Amazon for around $60 delivered. And they are well worth it. I don't waste my time with the old style starters at all. If it ever gives me an issue, in the recycling it goes to be replaced with one of the permanent magnet gear reduction late style starters.
You can get either early starters or new gear reduction starters that fit either flywheel tooth count. And you can get either size flywheel for both motors. Just make sure you know what you have and order your parts.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#7 |
Registered User
Join Date: Oct 2010
Location: Kingsburg, Ca.
Posts: 92
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Re: Small Block starter motors
Thanks all, I think I'll spring for one of the new style units.
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#8 |
Registered User
Join Date: Jan 2013
Location: Eastern TN
Posts: 1,921
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Re: Small Block starter motors
Everyone is correct on this. The only issue would be if you are running a factory bellhousing and need the 3 bolt starter that bolts to it instead of the block. Then you are stuck with old school. I used to switch the nose cones out on the old style since the starter motors were the same but the price tag sure wasn't. I dont think that you can get away doing this to a gear reduction starter.
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#9 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,403
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Re: Small Block starter motors
The issue with the old starter motors is that they are shunt wound, so the more that is required from them, the more current they draw. The newer starters have extremely strong permanent magnets instead of current-fed field windings that don't require battery power for them to spin. This means that they will usually start your old truck when the starter motor from the factory had to send a ton of current through the field windings to get the rotor to spin.
tl:dr version- the newer permanent magnet starter motors will start your truck in some really bad environmental conditions.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#10 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,212
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Re: Small Block starter motors
ACDelco 337-1022 Professional Starter https://www.amazon.com/dp/B007QBT0WA..._tkKyCb2QHEGJ4
Have this one on 3 of my 4 junks in the driveway. However they do require different bolts. I believe these ARP 430-3502
__________________
" That didnt make it any newer " " Dont antique the equipment " |
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#11 | |
Senior Member
![]() Join Date: Nov 2018
Location: Waterford California
Posts: 2,526
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Re: Small Block starter motors
Quote:
https://www.speedwaymotors.com/-Powe...er,334624.html |
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#12 | |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
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Re: Small Block starter motors
Quote:
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#13 | |
Registered User
Join Date: Jul 2012
Location: New Orleans, LA
Posts: 184
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Re: Small Block starter motors
Quote:
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1972 K10, 350/SM465/NP205, 4 inch lift, 35x12.50s on 15x10 wheels 1976 K20 crew cab, 350/Ranger/SM465/NP205 |
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#14 | |
Senior Member
![]() Join Date: Nov 2018
Location: Waterford California
Posts: 2,526
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Re: Small Block starter motors
Quote:
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#15 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
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Re: Small Block starter motors
Sorry about the size of the pic, but that's what Summit has it at. I don't recall making a thread about the starter? It's been on the truck awhile. Here is what I am talking about:
https://www.summitracing.com/search/...e/mini-hitachi ![]()
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#16 |
Registered User
Join Date: Jan 2017
Location: Larkspur, Colorado
Posts: 916
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Re: Small Block starter motors
When I swapped from the original 327 engine to the L 31 I reused the original '65 old-style starter. Both the original 327 and the L 31 had 168 tooth flywheels. The old-style starter bolted on no issues and works great.
Steve weim55 Colorado Last edited by weim55; 02-13-2019 at 11:30 AM. |
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