Need quick answer on 700R4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

krue · 08-04-2006, 10:25 PM

My bro is plumbing the cooler to his 700R4 and needs to know which fitting on the tranny is supposed to be the line to the cooler and which is the return.

**Hart_Rod** · 08-04-2006, 10:43 PM

I don't think it matters which one you use.

**John Fabris** · 08-04-2006, 10:48 PM

I ran bottom port to bottom, top to top. I did this after looking at a buddie's 87 chevy truck with a 700r4...

BobbyK · 08-05-2006, 02:10 AM

From TCI's site.
Half way down the page.
Upper port is the RETURN
Lower is out or feed to cooler.
http://www.tciauto.com/tech_info/cooler_fittings.htm

**VetteVet** · 08-05-2006, 04:27 PM

Here is some info I c/p from a website on the internet and a pic I saved from another site.

Transmission Cooling: You must have a transmission cooler in your radiator regardless of what someone has told you for the transmission to last. Auxiliary coolers are just that, in addition to. Water cools better (faster) than air always, period. The transmission fluid comes directly from the torque converter at a much higher temperature than the water in your radiator and is cooled to the water temperature fast. Then it goes to the auxiliary cooler to be cooled far below the water temperature. If you don't need a cooler in your radiator why does GM spend all that money doing so? If you wanted to cool a red hot piece of steel fast would you stick it in water or air, see the point. Your transmission will run cooler with a lock-up converter. This is more important with stall speeds of 2000 RPM or higher.

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krue · 08-05-2006, 06:31 PM

Thanks, vettevet, he's doing the aux cooler then radiator cooler, so we were trying to figure out how to get the flow in that order.

08-04-2006, 10:25 PM	#1
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Need quick answer on 700R4 My bro is plumbing the cooler to his 700R4 and needs to know which fitting on the tranny is supposed to be the line to the cooler and which is the return. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

08-04-2006, 10:43 PM	#2
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,840	Re: Need quick answer on 700R4 I don't think it matters which one you use. __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3

08-04-2006, 10:48 PM	#3
John Fabris TOTY 2006 Join Date: Dec 1999 Location: Magalia CA USA Posts: 2,270	Re: Need quick answer on 700R4 I ran bottom port to bottom, top to top. I did this after looking at a buddie's 87 chevy truck with a 700r4... __________________ John Fabris 67 C10 SWB

08-05-2006, 02:10 AM	#4
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,771	Re: Need quick answer on 700R4 From TCI's site. Half way down the page. Upper port is the RETURN Lower is out or feed to cooler. http://www.tciauto.com/tech_info/cooler_fittings.htm __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

08-05-2006, 04:27 PM	#5
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,709	Re: Need quick answer on 700R4 Here is some info I c/p from a website on the internet and a pic I saved from another site. Transmission Cooling: You must have a transmission cooler in your radiator regardless of what someone has told you for the transmission to last. Auxiliary coolers are just that, in addition to. Water cools better (faster) than air always, period. The transmission fluid comes directly from the torque converter at a much higher temperature than the water in your radiator and is cooled to the water temperature fast. Then it goes to the auxiliary cooler to be cooled far below the water temperature. If you don't need a cooler in your radiator why does GM spend all that money doing so? If you wanted to cool a red hot piece of steel fast would you stick it in water or air, see the point. Your transmission will run cooler with a lock-up converter. This is more important with stall speeds of 2000 RPM or higher. -------------------------------------------------------------------- Attached Images __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

08-05-2006, 06:31 PM	#6
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Re: Need quick answer on 700R4 Thanks, vettevet, he's doing the aux cooler then radiator cooler, so we were trying to figure out how to get the flow in that order. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"



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