transcooler ??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigjimzlll · 10-11-2002, 09:02 PM

Hi..which line coming from a th350 is out to the cooler? Im thinking about not running it through the radiator..thats what my tranny guy suggest anyways

70shortnphat · 10-11-2002, 09:08 PM

I Beleive its the upper one but I,m not possitive.
I dont use the one on my radiator and everything is fine.

Gordo · 10-11-2002, 09:34 PM

The trans pumps out the upper fitting. Unless you live in a very cold climate I would run the lines from the upper fitting on the trans to the lower fitting on the radiator, out the upper to the lower fitting on your cooler, out the upper and return to the lower on the trans.

Longhorn Man · 10-12-2002, 12:09 AM

Quote:

Originally posted by bigjimzlll
Im thinking about not running it through the radiator..thats what my tranny guy suggest anyways

You ARE running a cooler though, right?
If not you need a new tranny guy.

bigjimzlll · 10-12-2002, 01:51 AM

the tranny guy suggested just using a seperate cooler..he said running it through the radiator actually heats the oil...I have been running it through just the radiator..as the engine heats up, the shifts get weaker..so Im figuring to just running it through a aux cooler instead

MOTHERTRUCKERS · 10-12-2002, 07:38 AM

If not running it through the radiator it makes no difference as long as it's a tranny line out to the aftermarket cooler and back to the tranny. I run a moroso finned aluminum cooler mounted on a cross bar ahead of the radiator. Not cheap at 179.00 but I tow and haul heavy loads.

slam33 · 10-12-2002, 11:36 AM

Your Tranny guy is right. Running thru the rad can magnify problems if your tranny is slipping which creates heat it will transfer that heat to the motor and cause it to heat too. If you have a motor thats running hot you will transfer that heat to the trans . The coolers in the rad can develope leaks also which will screw up your fluid and tranny internals. Both Chevy and GMC finally swapped to aux coolers on there trucks becuse of this. Run a good size cooler all by it's self. I'm doing the big B&M stack plate and I'm upgrading to larger 3/8 tubes.

Longhorn Man · 10-13-2002, 12:50 AM

Ok, i agree then, your tranny guy is OK.
Did he sugjest doing a tranny fluid and filter chainge?
It kinda sounds to me like your fluid is thin/broke down/contaminated.

cableguy0 · 10-13-2002, 12:56 AM

get a tranmission flush that way all of the fluid is changed not just the 4 or 5 quarts in the pan.most shops have a trans flush machine. we charge somethin like 130 for our service which inlcudes changing the filter and doing the fluid flush

10-11-2002, 09:02 PM	#1
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	transcooler ??? Hi..which line coming from a th350 is out to the cooler? Im thinking about not running it through the radiator..thats what my tranny guy suggest anyways __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

10-11-2002, 09:08 PM	#2
70shortnphat "See the U.S.A....." Join Date: Apr 2002 Location: Richmond TX. Posts: 269	I Beleive its the upper one but I,m not possitive. I dont use the one on my radiator and everything is fine. __________________ 1970 short bed fleetside 1949 all origional chevy 3600 1974 camaro Richmond , Texas(just S.W.of Houston)

10-11-2002, 09:34 PM	#3
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	The trans pumps out the upper fitting. Unless you live in a very cold climate I would run the lines from the upper fitting on the trans to the lower fitting on the radiator, out the upper to the lower fitting on your cooler, out the upper and return to the lower on the trans. __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.

10-12-2002, 01:51 AM	#5
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	the tranny guy suggested just using a seperate cooler..he said running it through the radiator actually heats the oil...I have been running it through just the radiator..as the engine heats up, the shifts get weaker..so Im figuring to just running it through a aux cooler instead __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

10-12-2002, 07:38 AM	#6
MOTHERTRUCKERS Registered User Join Date: Dec 1999 Location: BRADENTON FLA Posts: 3,269	If not running it through the radiator it makes no difference as long as it's a tranny line out to the aftermarket cooler and back to the tranny. I run a moroso finned aluminum cooler mounted on a cross bar ahead of the radiator. Not cheap at 179.00 but I tow and haul heavy loads. __________________ Rest in Peace Ed. Thanks for all the good times.

10-12-2002, 11:36 AM	#7
slam33 Registered User Join Date: Aug 2001 Location: Long Beach, Ca Posts: 1,432	Your Tranny guy is right. Running thru the rad can magnify problems if your tranny is slipping which creates heat it will transfer that heat to the motor and cause it to heat too. If you have a motor thats running hot you will transfer that heat to the trans . The coolers in the rad can develope leaks also which will screw up your fluid and tranny internals. Both Chevy and GMC finally swapped to aux coolers on there trucks becuse of this. Run a good size cooler all by it's self. I'm doing the big B&M stack plate and I'm upgrading to larger 3/8 tubes. __________________ 71 LWB 350/350still working on it but it's going tp be sweet. www.geocities.com/stevemau/slam33page.html " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A>

10-13-2002, 12:50 AM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Ok, i agree then, your tranny guy is OK. Did he sugjest doing a tranny fluid and filter chainge? It kinda sounds to me like your fluid is thin/broke down/contaminated.

10-13-2002, 12:56 AM	#9
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	get a tranmission flush that way all of the fluid is changed not just the 4 or 5 quarts in the pan.most shops have a trans flush machine. we charge somethin like 130 for our service which inlcudes changing the filter and doing the fluid flush __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

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