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Cooling Discuss all of the aspects of cooling that you can think of! Radiators, transmissions, electric fans, etc.
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Old 07-28-2010, 10:45 PM   #1
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Overheated Big Block Chevy

I've got a 82 Trans Am w/ a 468, Weiand Stealth intake, manifold filler neck, 160 thermostat, Jeg's 50 gpm electric water pump, 4 roll aluminum radiator w/ dual electric Hi output fans. This thing get "HOT" still in the garage. I've tried getting all the air out of the system with filling the radiator and the manifold with the filler neck. I'm using water first than wasting this Water Wetter addictive. I can start the engine, run for 5 - 10 minute and engine gets hot. The last time the upper radiator hose blew off the manifold filler neck at 170 deg.. I hope by put some RTV on the filler neck and tighten the radiator hose, I hope the thermostat will open and will be it. Have anyone had this problem before? or what can be my problem?
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Old 09-10-2010, 06:54 PM   #2
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Re: Overheated Big Block Chevy

468 as in a 454 bored? could be bored too much.... have you tried running it with no stat? The other thing is, are you sure the electric pump is working?
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Old 09-10-2010, 08:35 PM   #3
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Re: Overheated Big Block Chevy

I've heard of high volume water pumps, push so hard on the thermostat that it will not open. Try and drill some hole in your thermostat to relieve the pressure. I've seen it work
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Old 09-10-2010, 10:19 PM   #4
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Re: Overheated Big Block Chevy

Have you checked your amp draw? I use a similar set up on mine, and found that I really needed an alternator and wiring that was up to the task to make the components work to their potential.
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Old 08-04-2012, 12:38 PM   #5
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Re: Overheated Big Block Chevy

Have the same problem, have a BBC street machine, 185 thermostat, temp will gradually climb, stopping who knows where. electric water pump, 2 10" fans mounted in shroud pulling good air through radiator. Very frustrated.
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Old 08-04-2012, 12:53 PM   #6
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Re: Overheated Big Block Chevy

wait your hose blew off at 170*f?
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Old 08-04-2012, 02:34 PM   #7
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Re: Overheated Big Block Chevy

Was that a question. no the hose did not blow off!
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Old 08-04-2012, 07:12 PM   #8
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Re: Overheated Big Block Chevy

that weird i have a bbc gen 6 454 in my third gen using the stock radiator stock fan shroud with a mechanical fan stays cool all day at 190 even at 100 weather.i have a 185 autozone thermostat
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Old 08-04-2012, 07:20 PM   #9
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Re: Overheated Big Block Chevy

Quote:
Originally Posted by shore17 View Post
.
The last time the upper radiator hose blew off the manifold filler neck at 170 deg.. Troubled Hot Rodder Shore17

Ahh.. yes he said the hose blew off at 170 deg.
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Old 08-04-2012, 07:25 PM   #10
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Re: Overheated Big Block Chevy

here what it looks like.and i had dual aftermarket slim fans in one of my other cars 5.3 turbo they sucked i wire them to were they were on all the time still got hot i used the oe 4th gen dual fans worked wayyyyy better Click the image to open in full size.
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Old 08-04-2012, 07:25 PM
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