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#21
07-31-2009, 09:38 PM
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The long test run is the best. My car ran crappy today as far as the heat... It never got over 180* But at idle she creeped up to 200*. But then I remembered that I had changed from a 2" spacer on my mechanical to a 1" spacer. In an effort to get a good 50/50% of fan in and fan out of make shift shroud.
No substitute for the correct shroud. I will put the old spacer in until I can get a "real" shroud. SHe ran 170* all day with the entire fan "IN" the shroud. Go figure. Curious to see the results. good luck Dave
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1967 Pontiac Tempest 2dr HRDTP Coupe 468 C.I. 500 HP 5 speed = FUN!!! 1990 Chevy Suburban R2500 Daily Driver 1986 Volvo DL245 Wagon.. Project car!!! The Burb Files |
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#22
08-01-2009, 09:06 AM
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Hey you are not that far from me. Do you know anyhting about that sanctuary somewhere around the Gap where they have wolves running around?
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Can do the talk, can't do the walk......therefore need deep pockets  Injection is nice but I rather be blown  If you got it flaunt it, if not fake it (Snoopy) Original 1977 Firebird / Welded tube frame connectors TH350 with shift kit / 400 bored/stroked to 455 by PDude OCD=Waxing and polishing your oil filter SICK=wetsanding your exhaust pipe |
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#23
08-01-2009, 09:12 AM
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pm sent
__________________
1967 Pontiac Tempest 2dr HRDTP Coupe 468 C.I. 500 HP 5 speed = FUN!!! 1990 Chevy Suburban R2500 Daily Driver 1986 Volvo DL245 Wagon.. Project car!!! The Burb Files |
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#24
08-01-2009, 05:36 PM
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Finally took a ride today in 85 degree weather. Around town and back roads the temps stay less than 180, however as soon as on the highway doing 70+ mph it goes up to around 200. It is much better then before, still warmer than I prefer, but good enough.
Other than an expensive radiator or a 4 speed tranny, it will stay as is.   
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Can do the talk, can't do the walk......therefore need deep pockets Injection is nice but I rather be blown If you got it flaunt it, if not fake it (Snoopy) Original 1977 Firebird / Welded tube frame connectors TH350 with shift kit / 400 bored/stroked to 455 by PDude OCD=Waxing and polishing your oil filter SICK=wetsanding your exhaust pipe |
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#25
08-17-2009, 08:46 AM
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Took it out yesterday in 90+ degree weather (no fun driving a non A/C car with headers and 3" exhaust on a hot day
 ), same thing happened, it is ok until get on the highway, the temps will go right up, will idle all day around 190 and maybe 200 when driving on back roads.
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Can do the talk, can't do the walk......therefore need deep pockets Injection is nice but I rather be blown If you got it flaunt it, if not fake it (Snoopy) Original 1977 Firebird / Welded tube frame connectors TH350 with shift kit / 400 bored/stroked to 455 by PDude OCD=Waxing and polishing your oil filter SICK=wetsanding your exhaust pipe |
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#26
08-17-2009, 09:06 AM
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My 69 GTO with a/c on will run 160 on the highway. It has a Griffin radiator, severe duty clutch, stock fan, points distributor converted to Pertronix and stock NOM 400.
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#27
08-17-2009, 10:08 AM
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radiator
The fact that it overheats during freeway running typically means insufficient radiator capacity. How old is your radiator, and what is its capacity?
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1969 Judge, 4-speed, CR/Parchment, Quasi-Survivor, #'s match - under restoration |
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#28
08-17-2009, 10:28 AM
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Swapping my desert cooler 4-row for the Griffin dropped my temps 20 degrees on the highway.
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#29
08-17-2009, 06:03 PM
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you are not hurting that motor at all at a 200 temp. GM designed it to run at 190 to 210 any way. I wish mine ran that cool. the trans am red lines at 260 but bad stuff can start to happen at 240
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#30
08-18-2009, 07:23 AM
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Make sure the lower radiator hose is in good shape with the spring still inside. Had the same problems as you one time and it was the hose sucking shut at highway speeds. New hose solved my problem.
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#31
08-18-2009, 07:48 AM
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I think it is the radiator, the motor is a Pdude built 400, stroked and bottom filled. It is a Dessert Cooler radiator, I think it is a 3 core. Hoses are new so are the belts. I just don't have $500+ right now to get a new radiator and electric fans.
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Can do the talk, can't do the walk......therefore need deep pockets Injection is nice but I rather be blown If you got it flaunt it, if not fake it (Snoopy) Original 1977 Firebird / Welded tube frame connectors TH350 with shift kit / 400 bored/stroked to 455 by PDude OCD=Waxing and polishing your oil filter SICK=wetsanding your exhaust pipe |
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#32
08-18-2009, 10:26 AM
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Still running Hot
Steve
I would be very satisfied running your temps on my 400. There is a wealth of information on the forum, it certainly has help me bringing down my temp. As George Kujanski said, it probably a combination of things. Good Luck Rich
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  If everything seems under control,your just not going fast enough. Mario Andretti ________________________________________ May God have mercy upon my enemies, because I Won't. General George Patton |
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#33
08-20-2009, 09:01 AM
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The 400 I have in my 66 runs at 180 on the highway. Highest it gets is 190 to 195 stopped at traffic lights. Had it out Tuesday here and the temperature was 98 with high humidity.... no problems. I had more of an overheating issue than the Goat did. LOL
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 Gary Get in, ShuT Up, Hang On! Member of the Baltimore Built Brotherhood MY GTO built 4th Week of March 1966 "Crusin' Is Not A Crime" Keep yer stick on the ice. |
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#34
08-25-2009, 03:20 PM
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mine was running at 220+ here is what i did to get mine down. i think is almost to low now. and I found a good use for the trunk weather striping lol
.025 clearance on the pump to plate        
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#35
08-25-2009, 05:15 PM
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So what temps are u now. Who makes the radiator and how much?
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Conrad 79 Trans AM 406 #12 heads Torker II intake Crower 60210 750 holley vac. sec. T400 3500 Stall 3:73:1 rear.  ECMTTFMFers. IHTTFMFers.
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#36
08-25-2009, 05:29 PM
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sorry about the lack of info there.
http://stores.shop.ebay.com/PERFORMA...__W0QQ_armrsZ1 my 79 t/a 4speed 400 is a cool 175 in town and 180ish doing 65-70mph. I dont even use the 2 12" fans to keep it that cool. all clutch fan. the 12"s are on it but not used. going to see if I need them for when it gets hot. in the 80's now. Last edited by lester; 08-25-2009 at 05:35 PM. |
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#37
08-25-2009, 05:59 PM
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Still Running Hot
Quote:
What did you do with the weather stripping? Thanks Rich
__________________
If everything seems under control,your just not going fast enough. Mario Andretti ________________________________________ May God have mercy upon my enemies, because I Won't. General George Patton |
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#38
08-25-2009, 06:27 PM
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glued it to the sides of the fan shroud to keep the air coming thru the rad instead of around it. i have pics in other post.
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#39
08-25-2009, 07:49 PM
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Still Running Hot
Quote:
Thanks. Rich
__________________
If everything seems under control,your just not going fast enough. Mario Andretti ________________________________________ May God have mercy upon my enemies, because I Won't. General George Patton |
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#40
08-25-2009, 08:13 PM
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I like that weatherstripping. Where did you buy that? Home Depot?
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