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post #1 of 7 (permalink) Old Sep 11th, 19, 12:24 PM Thread Starter
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Starter Blanket?

A friends 69 350 motor with long tube headers is doing the "it won't crank after driving until it cools off" issue. I assume his starter is getting heat soaked especially in summer heat.

For those who have, did a blanket resolve the issue or did a remote solenoid?

If blanket, any particular one?
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post #2 of 7 (permalink) Old Sep 11th, 19, 12:44 PM
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Re: Starter Blanket?

A lot of people solve the heat soak problem with a remote solenoid. The rest solve it with a mini starter.

1968 that started life and a 6 banger with a PG. Now it's a 350 with a TKO600, Moser 12 bolt, Speedtech LCA/UCA, ATS Tall Spindles, Hotchkis Springs, Forgeline ZX3P, C5 (Kore3) brakes with other cool stuff from Ron Davis, Vintage Air and soon to be Terminator EFI.

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post #3 of 7 (permalink) Old Sep 11th, 19, 02:00 PM
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Re: Starter Blanket?

Starter solenoid heat problems are common with headers. I use a heat shield to keep it happy. They can be hard to fit though. I use this one with success:
A blanket may hold more heat in the solenoid. Remote solenoids are the best solution.
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post #4 of 7 (permalink) Old Sep 11th, 19, 02:40 PM
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Re: Starter Blanket?

I've had good luck with the Thermo Tec starter shield.

Also make sure your starter is in good working order. If they haven't been done lately (if ever), new brushes and bushing also make a world of good on starters. A good re-built Delco Hi-torque starter wouldn't hurt either.

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post #5 of 7 (permalink) Old Sep 11th, 19, 06:32 PM
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Re: Starter Blanket?

In about 2013 or 14 I had very similar symptoms with mine. I added a remote solenoid and haven't had any issues since. I believe my problem had to do with the heat causing resistance in the electrics. A GM starting system draws a lot of current when you turn the key. That current has to flow through a long circuit involving small wires, the battery, the ignition switch and the solenoid. Normally, the system works, but the added resistance caused by heat through the small wires is a major part of the problem. Among other things, a remote solenoid will shorten and relocate some of these small wires away from the heat. A remote solenoid is cheap, easy and you may have most of the parts already. I did try a starter wrap with very little success.
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post #6 of 7 (permalink) Old Sep 11th, 19, 08:01 PM
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Re: Starter Blanket?

Quality stock components will have no problem starting an engine. Heat soak claims are often the result of tired starters. Quality rebuilds result in perfect starting. I have headers very close to my stock starter on a BB Chevelle and no issues. No shields, no bandaids.

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post #7 of 7 (permalink) Old Sep 12th, 19, 07:03 AM
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Re: Starter Blanket?

I've used those blankets before and IMHO, they suck. They get filthy and if your engine leaks at all (they all do it seems), the blanket sucks up oil. I switched to a dense style mini-starter and it works great on my camaro 350 with headers. I am also running one on my 67 GTO. That car has a remote solenoid mounted on the firewall too. The Big pontiac had a real problem with hot start and the remote solenoid helped.

The important thing here is that you ask me what kind of car I've got. "I've got a BITCHIN' CAMARO"
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'68 350 4 speed
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