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08-16-2016, 10:31 PM | #26 | |
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Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,189
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Re: 383 stroker running too hot
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08-16-2016, 10:38 PM | #27 | |
20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,728
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Re: 383 stroker running too hot
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08-17-2016, 08:59 PM | #28 |
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Join Date: Aug 2016
Location: Idaho
Posts: 42
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Re: 383 stroker running too hot
Ok, update: New fan clutch made a big difference. Thank you Stocker!
Temps dropped to 215 at the thermostat housing, 210 top of radiator, and 185 at the bottom. This is with the AC blasting too and 95 degrees outside. I attached a photo of the bad fan clutch. Notice the thermal spring is missing. Now I want to get greedy and get rid of the transmission cooler blocking air flow. I'm tempted to strap it too the inside of the grill instead of attached to the AC condenser. That would look crappy! I think temps could drop even more with it gone though. So I guess I would still need a new radiator with cooler built in. Leaning heavy towards a 4 core. Until then, I can drive in in the high heat now! |
08-17-2016, 09:54 PM | #29 |
20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,728
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Re: 383 stroker running too hot
That's great news, I'm glad you saw a big improvement! Your old fan clutch was a standard duty, not correct for your application. And with it out, it looks pretty grimy, and has probably been losing fluid for a long time.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
08-29-2016, 10:09 PM | #30 |
Registered User
Join Date: Aug 2016
Location: Idaho
Posts: 42
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Re: 383 stroker running too hot
Ok, another update and question. I went ahead and replaced the radiator with a 4 core aluminum. That took my temps down to 180-190 at the thermostat housing...very nice. I still have a little fuel boiling (percolating) problem in the carb but I have a spacer on the way to isolate the carb from the intake heat. There currently is no spacer.
Now, for a dumb question...my old radiator was painted black and probably the same way, but is the radiator supposed to tilt back a little at the top (instead of being mostly vertical) ? Actually it seems like the entire engine etc all tilts back a little (see photo). Is this pretty standard or do I have some sort of overall alignment problem? Thank you! |
08-30-2016, 08:37 AM | #31 |
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Join Date: Mar 2009
Location: WARRENSBURG,MISSOURI,64093
Posts: 1,518
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Re: 383 stroker running too hot
The factory did that intentionally. As the engine/transmission is at an angle for the driveline alignment. The black paint on the factory radiator was probably there to prevent corrosion, in my opinion, it would effect the heat transfer, otherwise, I'd say you're set and nothing to worry about.
Ben Posted via Mobile Device
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"Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time" “Serious Black” my 1971 Short Bed Fleetside Sold to an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten” |
08-30-2016, 10:34 AM | #32 |
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Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,189
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Re: 383 stroker running too hot
Glad to hear you solved the issue!
Your radiator angle is fine. Any paint on a radiator is not a conventional paint, but rather a coating that doesn't inhibit the heat transfer of a radiator, and it's certainly not needed for aluminum. |
08-30-2016, 01:20 PM | #33 |
Registered User
Join Date: Aug 2016
Location: Idaho
Posts: 42
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Re: 383 stroker running too hot
Forgot to mention too, I did get rid of the tranny aux cooler attached to the front of the AC condenser. Attached the cooling lines to the new radiator, and it seems to be cooling the th400 just fine.
Thanks to all! Great forum with outstanding suggestions! Hope I can contribute something in the future. |
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