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#1 |
Registered User
Join Date: Feb 2017
Location: Muscle Shoals Al
Posts: 7
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Drag on hot starts
Hey folks, need a little help with a small problem. I have a ‘71 c10 with a 350, Hei ignition, and aftermarket fuel injection. When I park it and come back to it within about 5 to 10 mins the starter seems to drag, and then it will crank. I’ve had the starter tested and it’s good. If I wait until the motor has cooled more it starts fine. Any ideas would be appreciated!
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#2 |
Registered User
Join Date: May 2016
Location: Henderson NC
Posts: 975
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Re: Drag on hot starts
Either heat soak on your starter or your timing is a little high. Do you have headers if so that will cause heat soak. What type starter are you running? A mini starter might help.
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#3 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Drag on hot starts
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#4 |
Registered User
Join Date: Feb 2017
Location: Muscle Shoals Al
Posts: 7
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Re: Drag on hot starts
Thanks guys, I do have headers and what appears to be an Autozone starter so I’m thinking I’ll try the heat shield first.
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#5 | |
Registered User
![]() Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 368
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Re: Drag on hot starts
Quote:
https://www.summitracing.com/parts/sum-g1750/overview/
__________________
1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power Last edited by ga-stepside; 08-04-2018 at 04:45 PM. |
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#6 |
Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,073
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Re: Drag on hot starts
The solenoid current/voltage have zero impact on cranking speed so post #5 is fiction. The solenoid could have burned contacts switching the starter, that are resistive though. Make sure the cables are good, connections are clean and the engine is grounded by the big negative cable. Not the alternator bracket, not the body. Make sure the timing is not overly advanced as mentioned, and make sure the battery is good.
Having anything tested at a parts store tells you nothing because the people that work at them know nothing. |
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#7 |
Registered User
Join Date: Jun 2015
Location: @
Posts: 890
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Re: Drag on hot starts
http://www.madelectrical.com/catalog/st-1.shtml
heres a guy that knows electrical not just a parts seller lots of good tech on this site . scroll to the bottom where he explains gm heat soak problems |
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#8 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,211
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Re: Drag on hot starts
Get a starter from a '99 c2500 with a 7.4 draws half the load and half the size.
Spins my 406 sb with 36° initial timing with out any drag. And another spins my 454 in my '68 like theres no spark plugs in it. https://www.amazon.com/ACDelco-337-1.../dp/B007QBT0WA
__________________
" That didnt make it any newer " " Dont antique the equipment " Last edited by KQQL IT; 08-04-2018 at 09:26 PM. Reason: Link |
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#9 |
Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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Re: Drag on hot starts
I used the smaller gear reduction starter from a 99 Tahoe to correct the problem on my 69 GMC.
__________________
"Negative people always seem to have a problem for every solution" |
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#10 |
Registered User
Join Date: Feb 2017
Location: Muscle Shoals Al
Posts: 7
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Re: Drag on hot starts
The heat shield came in today from Summitt, I installed it and ran around town for about an hour. When I stopped for gas I shut it off and it fired right back up when I turned the key. Thanks a lot for the help folks!
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