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#895845 - 09/20/11 11:10 AM Transmission Cooler Lines & Cooler
4893fei Offline

Registered: 01/22/11
Posts: 469
Loc: 208
I am going to be replacing my transmission lines with a new cooler for my th350.

I need some ideals on what kind of lines to run.Any transmission coolers u would recommend?

Pictures of ur setup would be great.Thanks

Edited by 4893fei (09/20/11 11:11 AM)

#895862 - 09/20/11 12:48 PM Re: Transmission Cooler Lines & Cooler [Re: 4893fei]
406monte Offline

Registered: 11/27/06
Posts: 3762
Loc: Hubert, NC
I just ran my new tranny lines not to long ago. I am at work and wil post the pics when I get home. I used -6 braided line and a B&M stacked cooler. Jegs has a nice kit to use that comes with all the stuff you will need. Here is the page they are on. This is the one I used.
Here is a shot of my setup with this kit.

Edited by 406monte (09/20/11 05:06 PM)
Edit Reason: added pic
84 Monte Carlo SC 406 SBC
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78 Monte Carlo Landua 350 sbc SOLD
81 Malibu Classic 350 sbc SOLD
84 Monte Carlo LS 350 sbc SOLD
84 Buick Regal 229 v6 SOLD

#895917 - 09/20/11 05:45 PM Re: Transmission Cooler Lines & Cooler [Re: 406monte]
Retro Offline

Registered: 01/02/08
Posts: 1991
Loc: Macon,Ga.
Large Coolers are best, the Long 'Tru Cool' brand Stacked Plate style are the most efficient. They are self regulating as well.
Long makes the B&M Coolers.

Same Co. as Makco >>
Cooler flow diagram >>

Bottom fitting on Trans to Bottom fitting on Rad,
Top fitting on Rad to Bottom fitting on Cooler,
Top fitting on Cooler to Top fitting on Trans.
Trans Case is 1/4" NPST/NationalPipeStraightThread-Male.
Jegs also has Hose kits wo/Cooler. The Cooler/Hose Combo kits don't include enough Hose to replace the Trans Lines.

I'd check with Jegs to see if the Trans fitting in the Hose Kit are 1/4" NPT or NPST. NPT can crack the Trans Case.

Edited by Retro (09/20/11 05:50 PM)

#896018 - 09/21/11 12:44 AM Re: Transmission Cooler Lines & Cooler [Re: Retro]
DiamondSnake Offline

Registered: 04/26/11
Posts: 197
Loc: Québec, QC
I use the 6 pass Flexalite 4118 cooler for my car.

I used hard lines from the transmission to the area of the main radiator and attached rubber lines from the hard lines to the secondary radiator(Flex-a-lite cooler). Works great smile

Edited by DiamondSnake (09/21/11 12:50 AM)

#896502 - 09/23/11 09:40 PM Re: Transmission Cooler Lines & Cooler [Re: DiamondSnake]
foggerSS87 Offline

Registered: 05/19/09
Posts: 451
Loc: chicago Illinois
i have the same 6 pass flexalite cooler except with the -6 ends. ill try and get a picture tomorrow, with that cooler and the torque converter lockup not hooked up my trans temps only get about 170ish while beating on it on hot days
87ss. lq4 with 78mm turbo, th350, 3800 stall, 3.25 9"

#896556 - 09/24/11 11:18 AM Re: Transmission Cooler Lines & Cooler [Re: foggerSS87]
87ChooChoo Offline
10+ Year

Registered: 10/22/03
Posts: 1460
Loc: las Vegas, NV
I saw the reference to the LONG coolers above, and it triggered a memory of something I just saw on Ebay. You would likely have to cut off the metal tubes and use rubber hose and hose clamps, but thought this was a good buy.
85 El Camino Choo Choo with L31 350 Crate, TPI, Serp, TES Headers, GN 200-4r, 3.73 8.5 GN Posi, Acura Buckets, '04 GP Console, Electric Mirrors, Electronic HVAC, ZQ8 wheels, Blazer front brakes, LS1 rear brakes, and more....

#896599 - 09/24/11 06:21 PM Re: Transmission Cooler Lines & Cooler [Re: 87ChooChoo]
Retro Offline

Registered: 01/02/08
Posts: 1991
Loc: Macon,Ga.
Yeah, Long makes most all of the 'Stacked Plate' type Coolers. They are rebranded & sold under other names/Co.'s.

The Lines on that Caddy cooler can be removed/unscrewed @Cooler and different fittings installed. Looks like a Tru Cool Max style/design.

Edited by Retro (09/24/11 06:26 PM)

#900118 - 10/19/11 09:17 PM Re: Transmission Cooler Lines & Cooler [Re: Retro]
irene Offline

Registered: 03/05/07
Posts: 61
Loc: Toledo,Ohio
If you want one on the cheap, go to the junk yard and look at a ford explorer or bronco ll or ranger. they are all stacked coolers and should be cheap.
Mount to the car,don't zip tie it to radiator,keep it at least 3/4" away.
good luck

#900177 - 10/20/11 12:31 PM Re: Transmission Cooler Lines & Cooler [Re: irene]
Richie Cat Offline

Registered: 05/03/09
Posts: 1493
Loc: Lake Ronkonkoma, N.Y.
Why on a stacked plate cooler would you want the fluid to enter at the bottom? Does this slow the fluid down for more cooling?
83 SC, 355 w/TPI

#900288 - 10/21/11 01:59 AM Re: Transmission Cooler Lines & Cooler [Re: Richie Cat]
Retro Offline

Registered: 01/02/08
Posts: 1991
Loc: Macon,Ga.
The Factory always uses this path, Fluid enters Bottom of Rad & Aux. Coolers. This helps keeps air out of the system.


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