Thread: Transmission Cooler

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  1. #1 Transmission Cooler 
    SE Level Member nukkinfuttz's Avatar
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    I want to add an external trans cooler this weekend. Whats a good size to get? They get more and more expensive the larger they get, so i want to be sure i buy the one i "need" and not one for a cummings diesel or something rediculously large. Any recommendations?
    91BerettaGTZTurbo=Holset HX-35,26PSI,Bored,EagleRods,WisecoPistons,O-rigned,TitanCopperHG, adj Cam Gears,Custom turbo mani,TurboSmart36mmWG,Screamer Pipe,Custom 3"turboback,MSII-E, LC1Wideband, PyroMeter,KnockSense,Walbro 255LPH,75lbs/hr inj's,3"Core42"Wx15"T IC,HKS BOV Waterinjection,antilag,6puckClutch,Slicks, just needed a Part Number
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  2. #2 Re: Transmission Cooler 
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    25 000 "lbs" or btu would be nice if you're replacing the stock cooler.

    15 000 if you're adding in series.
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  3. #3 Re: Transmission Cooler 
    GT Level Member Sushamouf's Avatar
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    I got mine from Checker auto parts, it is cheaper HERE. I used the "678" model rated for 24,000LBS and bypassed the cooler in the radiator. Now my trans and engine both stay cooler even in stop and go.
    2000 GTP - Stage 3 Heads - Gen V - 48# Injectors - Hardened Pushrods - Comp Limited Travel Lifters - LS6 Springs - Yella Terra 1.9 Rockers - S3 Phenolic Intercooler - N* TB - SD Headers - SR intake - ZZP 3.1 Pulley - Dyno Tune - Built 4T65E-HD - 12" Brake kit - SS brake lines - KYB GR2 Struts - 333WHP - 386WTQ
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  4. #4 Re: Transmission Cooler 
    I live here. DirtDog's Avatar
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    could you upload pictures of how you mounted your trans cooler?
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  5. #5  
    GrandPrix Junkie Bluemagic's Avatar
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    Interested as well.


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  6. #6  
    GT Level Member Sushamouf's Avatar
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    Yeah I could, give me a minute. Actually a good time cause I already have my bumper off.

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    2000 GTP - Stage 3 Heads - Gen V - 48# Injectors - Hardened Pushrods - Comp Limited Travel Lifters - LS6 Springs - Yella Terra 1.9 Rockers - S3 Phenolic Intercooler - N* TB - SD Headers - SR intake - ZZP 3.1 Pulley - Dyno Tune - Built 4T65E-HD - 12" Brake kit - SS brake lines - KYB GR2 Struts - 333WHP - 386WTQ
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  7. #7  
    GT Level Member Sushamouf's Avatar
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    Sent from my Droid
    2000 GTP - Stage 3 Heads - Gen V - 48# Injectors - Hardened Pushrods - Comp Limited Travel Lifters - LS6 Springs - Yella Terra 1.9 Rockers - S3 Phenolic Intercooler - N* TB - SD Headers - SR intake - ZZP 3.1 Pulley - Dyno Tune - Built 4T65E-HD - 12" Brake kit - SS brake lines - KYB GR2 Struts - 333WHP - 386WTQ
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  8. #8 Re: Transmission Cooler 
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    I thought you weren't supposed to mount them like that.

    BM says you're not supposed to as well: http://bmracing.com/wp-bnmcont/uploa...er_techdoc.pdf
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  9. #9  
    GT Level Member Sushamouf's Avatar
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    Thats to prevent an air pocket i guess, ive never seen that. It works fine

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    2000 GTP - Stage 3 Heads - Gen V - 48# Injectors - Hardened Pushrods - Comp Limited Travel Lifters - LS6 Springs - Yella Terra 1.9 Rockers - S3 Phenolic Intercooler - N* TB - SD Headers - SR intake - ZZP 3.1 Pulley - Dyno Tune - Built 4T65E-HD - 12" Brake kit - SS brake lines - KYB GR2 Struts - 333WHP - 386WTQ
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  10. #10 Re: Transmission Cooler 
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    David at TEP installed mine that way too, no issues so far and a nice cool trans. I have about 6k on Dave's trans, fluid still smells and looks like it just came out of the bottle.
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  11. #11 Re: Transmission Cooler 
    GT Level Member ls1camino's Avatar
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    After attaching the lines and clamps, but before mounting it to the radiator, turn the engine on and let the fluid circulae while holding he cooler in one of the recommended positions.
    2000 Pontiac Trans Am WS6 M6: 427ci LS3, Built T56, Moser 9" w/ 4.11 Gearing, Full Suspension, and 6-point Cage.
    2000 Pontiac Grand Prix GTP: Twincharged (T67 Turbocharger).
    2007 Chevrolet Silverado 3500 Dually: Intake, Exhaust, and Tune.
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  12. #12 Re: Transmission Cooler 
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    That's exactly as my (2) 18,000 GVW coolers are mounted, one on each side-no issues for 30,000 miles now! I installed my first trans cooler in 1978 on a Nova SS and besides my GP have a Long 24,000 GVW cooler on my 94 Mustang GT Convertible now for 14 years with zero issues. It is fine mounted that way. BTW-Have never had a trans failure running the cooler outside of the radiator.
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  13. #13 Re: Transmission Cooler 
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    anecdotal evidence.

    so convincing.
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  14. #14 Re: Transmission Cooler 
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    Some of the trans experts might want to read this for some "anecdotal evidence":

    How often should the automatic transmission fluid... — Yahoo! Autos

    The trans fluid in my GP runs about 135 degrees in the summer and about 145-150 degrees on the Mustang GT with the coolers mentioned above-both running outside of the radiator-the coolers do ALL of the cooling.
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  15. #15  
    I live here. DirtDog's Avatar
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    On my GXP the stock tyranny temp was round 220 in the summer but I added two extra coolers to it and now it stays in the 170 range. They help alot

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    http://www.grandprixforums.net/my-06-gp-gxp-72403.html
    OBX headers, TEP tranny cooler, ls1 IM fuel rails and injectors, ls2 TB, ls7 MAF, full custom exhaust, Quad retro headlights, full out front and rear suspension work, tuned by HPT by me 8====>

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