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06-21-2019, 02:47 PM
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#1 |
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Registered User
Join Date: Nov 2011
Location: USA
Posts: 373
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What transmission fluid are you using in your turbo 400 transmission
What tranmission fluid do you guys use in your Chevy turbo 400 transmission?
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06-21-2019, 03:13 PM
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#2 |
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Registered User
Join Date: Jun 2012
Location: Portland
Posts: 1,330
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Re: What transmission fluid are you using in your turbo 400 transmission
I used a synth blend of Dexron VI for a filter/refill of a 69 Elky I was working on.
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06-21-2019, 06:28 PM
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#3 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,141
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Re: What transmission fluid are you using in your turbo 400 transmission
Older transmission require dextron III. Dont use new VI in older transmissions.
__________________
Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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06-21-2019, 06:54 PM
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#4 |
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At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,130
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Re: What transmission fluid are you using in your turbo 400 transmission
Type F
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" That didnt make it any newer " " Dont antique the equipment " |
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06-21-2019, 07:24 PM
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#5 | |
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Registered User
Join Date: Jun 2012
Location: Portland
Posts: 1,330
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Re: What transmission fluid are you using in your turbo 400 transmission
Quote:
From a GM tech bulletin: Although DEXRON-VI (fig. 1) was introduced into production starting with 2006 model year vehicles (see bulletin 04-07-30-037D), there are still some misunderstandings about it. Here are some facts to help clear up these misunderstandings. Since GM introduced the first service-fill specification for automatic transmission fluid (ATF) in 1949, it has been necessary periodically to upgrade the specification as part of a continuous improvement strategy. The upgrading process ensures that available service fill fluids are of an appropriate quality for use in transmissions that have been designed around the improved factory fill fluid performance. IMPORTANT: As with previous upgrades, DEXRON-VI fluids are designed to be backward compatible with earlier transmission hardware. But more important, earlier type fluids are NOT FORWARD COMPATIBLE with transmissions that were designed to use DEXRON-VI. DEXRON-VI can be used in any proportion in past model vehicles equipped with an automatic transmission, in place of DEXRON-III (for instance, topping off the fluid in the event of a repair or fluid change). DEXRON-VI is also compatible with any former version of DEXRON for use in automatic transmissions. TIP: Simply topping off the fluid is adequate, but a full drain and replacement is preferred, to obtain the full benefit. |
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06-21-2019, 09:02 PM
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#6 |
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Registered User
Join Date: Jan 2018
Location: TN
Posts: 104
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Re: What transmission fluid are you using in your turbo 400 transmission
Dex III
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1969 C10 Suburban Custom (Factory 396/TH400, survivor with no rust) |
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06-22-2019, 01:55 AM
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#7 |
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Senior Member
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,118
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Re: What transmission fluid are you using in your turbo 400 transmission
Rebuilt 400TH and am using Mobil-1 Delvac. Most transmission shops would recommend the familiar route, which is Dexron III. I've heard from a few with solid experience that Delvac is a step-up on a rebuild, so giving it a go.
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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06-22-2019, 07:02 AM
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#8 |
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Registered User
Join Date: Aug 2016
Location: Shelburne, VT
Posts: 46
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Re: What transmission fluid are you using in your turbo 400 transmission
Type F. It is what was suggested with my new B&M torque converter
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06-22-2019, 07:10 AM
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#9 |
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Senior Member
Join Date: Dec 2009
Location: TN.
Posts: 7,724
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Re: What transmission fluid are you using in your turbo 400 transmission
Type F
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________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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06-22-2019, 11:04 AM
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#10 |
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Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,255
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Re: What transmission fluid are you using in your turbo 400 transmission
I put Type F in my TH350 big improvement in shifting over Dextron
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71 C-20 07 Magnum RT AWD |
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06-22-2019, 11:13 AM
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#11 |
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Proprietor of Dale's Corner
Join Date: Nov 2012
Location: Vacaville , CA
Posts: 15,834
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Re: What transmission fluid are you using in your turbo 400 transmission
Type F as per B&M shift kit recommendations. Shifts good....and has held up for many years.
__________________
"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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06-22-2019, 02:16 PM
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#12 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,389
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Re: What transmission fluid are you using in your turbo 400 transmission
Type F here also
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06-22-2019, 02:19 PM
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#13 | |
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Registered User
Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 3,279
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Re: What transmission fluid are you using in your turbo 400 transmission
Quote:
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06-22-2019, 05:07 PM
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#14 |
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Registered User
Join Date: May 2017
Location: Inman/Boiling Springs, SC
Posts: 420
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Re: What transmission fluid are you using in your turbo 400 transmission
Type F here too.
__________________
1985 C10 shortbed, current project. Member of the Upstate SC GM Truck Club. |
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06-22-2019, 11:27 PM
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#15 | |
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Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,118
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Re: What transmission fluid are you using in your turbo 400 transmission
Quote:
 .....Use at your own risk (rebuild & new only). Two educated presented opinions say if it meets Allison TEF-295 then it makes for a very cool, smooth & happy 400. Safe route is Dexron III 
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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06-24-2019, 11:15 AM
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#16 |
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Registered User
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,177
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Re: What transmission fluid are you using in your turbo 400 transmission
I have a recently rebuilt TH350 trans and was told to get ATF 4+
__________________
"Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC |
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