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 A340F vs A340H transmissions
#732344
06/20/06 09:12 PM
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Joined: Sep 2005
Posts: 970
OP
Rock Warrior
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One came w/ 22re, other 3vze.
Otehr than the bellhousing, are there major differences? If needed... would a complete A340H be a drop-in replacement for the A340F if you also changed T-cases with it?
'89 FSM says nothing about different gear ratios etc.
With 200+ Billion electrical parts, the world most complicated machine is inside your own skull.
Question Reality.
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'89 Rnr DLX "SR4.5", 32s w/ 5.29 locked f/r blah blah
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Re: A340F vs A340H transmissions
[Re: RatLabGuy]
#732345
06/21/06 12:54 AM
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Joined: Nov 2000
Posts: 4,192
Toyota Moderator
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They are not the same. The A340H shares fluid between the transfer case and transmission and the parking mechanism is in the transfer case, so it cannot be removed from the transmission. The above is not true of the A340F. They also have different shift characteristics. I think that the gear ratios are the same (2.7ish?) and they are both chain driven cases.
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 Re: A340F vs A340H transmissions
[Re: DirtyHarry]
#732346
06/21/06 02:36 AM
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Joined: Apr 2000
Posts: 4,282
Roll Me Over
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biggest diff, for me, is that the 340f is that you can slap in a gear driven t-case and therefore, a marlin adapter and an extra box... <img src="/forums/images/graemlins/wink.gif" alt="" /> http://www.4x4wire.com/toyota/tech/autocrawler/
leo d. 90 4runner, v6, auto, WCOR CitB kit, marlin duals, arb rear, tt front 4.88, blah, blah, blah... Pres. of TEAM IFS! and GETTING OFF 4WD Club member
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Re: A340F vs A340H transmissions
[Re: ldivinag]
#732347
06/21/06 03:15 AM
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Joined: Nov 2000
Posts: 4,192
Toyota Moderator
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Inchworm now makes dual case adapters for the A340H. I documented one of the first installs, should be in Dirt Trucks magazine in a few months (darn print lead times...).
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Re: A340F vs A340H transmissions
[Re: DirtyHarry]
#732348
06/21/06 03:22 AM
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Joined: Sep 2005
Posts: 970
OP
Rock Warrior
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They are not the same. The A340H shares fluid between the transfer case and transmission and the parking mechanism is in the transfer case, so it cannot be removed from the transmission. The above is not true of the A340F. They also have different shift characteristics. I think that the gear ratios are the same (2.7ish?) and they are both chain driven cases. But if you were to change both units at once, as a whole - would it not eliminate this problem? AKA change both tranny and T-case so they match?
With 200+ Billion electrical parts, the world most complicated machine is inside your own skull.
Question Reality.
-----------------------------
'89 Rnr DLX "SR4.5", 32s w/ 5.29 locked f/r blah blah
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Re: A340F vs A340H transmissions
[Re: RatLabGuy]
#732349
06/21/06 05:07 AM
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Joined: Oct 2004
Posts: 1,270
Body Damage is Cool
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yes and no...the F uses 3 solenids inside the the tranny as the H has 4 2 shift 1 o/d and 1 transfer position. you will need the ecu from them as they are computer controlled. F is way better all the way.
91 pickup 5.29's US GEAR.35x 12.50 trxus m/t.5 speed swap- SOLD!
96 4Runna limited-toytec/OME lift,diff drop Nitto 285/75/16 Elocked=butter
07 FJ cruiser 3" DR coilovers 285/75/16 nitto TG. allpro sliders
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Re: A340F vs A340H transmissions
[Re: willzrunna96]
#732350
06/21/06 05:03 PM
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Joined: Sep 2005
Posts: 970
OP
Rock Warrior
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Thanks, that clarifies it a bit.
With 200+ Billion electrical parts, the world most complicated machine is inside your own skull.
Question Reality.
-----------------------------
'89 Rnr DLX "SR4.5", 32s w/ 5.29 locked f/r blah blah
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Re: A340F vs A340H transmissions
[Re: DirtyHarry]
#732351
06/21/06 06:17 PM
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Joined: Feb 2000
Posts: 4,690
Roll Me Over
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They also have different shift characteristics. I think that the gear ratios are the same (2.7ish?) and they are both chain driven cases. I don't know about the A340H, but the gear ratios for the A340F are: First 2.804 Second 1.531 Third 1.000 Fourth 0.705 Reverse 2.393 That was from an old archived post at http://www.4x4wire.com/forums/showflat.php?Cat=&Board=UBB89&Number=256769 regarding 3rd gen 4Runners.
Jeff
2000 4Runner SR5, supercharger, rear e-locker, ARB front locker, 285/75R16 MT/R's, custom bumpers & skids
2007 Tacoma double cab 4x4 - stock
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Re: A340F vs A340H transmissions
[Re: Jeff the marmot]
#732352
06/21/06 07:37 PM
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Anonymous
Unregistered
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The A340E/A340F/A340H 4-Speed Automatic Overdrive Transmission This is Toyotas ECT (Electronically Controlled Transmission) automatic. It is used in both 22RE (4wd) models and in the 3VZ-E and 22R-TE (both 2wd and 4wd) 1st 2.804, 2nd 1.531, 3rd 1.000, 4th 0.705 Reverse: 2.393. Info above is from this site: http://www.off-road.com/toyota/tech/other/4_dts.htmlLow Range in the A340H transfer case is 2.66: 1,,if I remember correctly. Mike in AR
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Re: A340F vs A340H transmissions
#732353
06/21/06 08:57 PM
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Joined: Feb 2000
Posts: 4,690
Roll Me Over
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Low range in the transfer case used behind the A340F is 2.56:1.
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