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Turbo 350

Started by mr5000 , Mar 22 2008 08:01 AM

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22 replies to this topic

#1 mr5000

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Posted 22 March 2008 - 08:01 AM

has anyone got a pic of a turbo 350 i no what a 400 looks like and a trimatic
just want to no what they look like because im looking at buying a 308 and turbo350 combo but the ppl are telling me it came out of a lh n reckon its all factory im pretty sure they only came out with traumatics

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#2 TerrA LX

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Posted 22 March 2008 - 08:43 AM

Only traumatics AFAIK.
350 has square pan with one corner cut off.
http://images.google...=...ficial&sa=N

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#3 surfmaster

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Posted 22 March 2008 - 09:07 AM

I dont remember T350's being factory fitment in LH's?

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#4 _CHOPPER_

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Posted 22 March 2008 - 11:32 AM

T350 was factory fitment when you had a 308 in a WB Statesman.

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#5 micklx

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Posted 23 March 2008 - 07:36 PM

As far as I know, no Turbo trans were available in Toranas.

My own theory on the WB Statesman is that a Series 1 came standard with a T350 and the T400 was the HD option. A series 2 came standard with a trimatic and a T400 was again the HD option.

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#6 _Adam Perth_

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Posted 25 March 2008 - 03:04 PM

i don't think the WB stato ever came out turbo 400.
they were all T350 up to mid 1982, then changed to trimatic from then onwards , with i guess? a T350 option (rare).

Also,late HZ statesman + HZ SLE came out T350 (M38), as well as some early SLE commodores.
So, the T400 was well and truly gone by then.

be careful when buying T350, as there are 3 different overall lengths with respect to the extension housing, the most common on in australia being the cable kickdown 6" ext (short)

there are also a few T350 3C "longs" with a 12" ext housing , which have vacumme modulated kickdown (good, i think!) that came out in 2WD C20 / C30 and post '79 cameros etc.

This box is sometimes confused with Turbo375

All take that STD GM Yoke., except T400 and T375

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#7 MRLXSS

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Posted 25 March 2008 - 03:40 PM

Hey Ryan,
The Box could have been in the Torana, but certainly not standard.

If this box "did" come out of a Torana, Ask if you can buy the Crossmember and tailshaft too! This could save a lot of of hassle.

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#8 mr5000

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Posted 25 March 2008 - 05:27 PM

its been sold from under me hate that i think i definatly will be going 350 as im definatly not a fan of trimatics blown 2 already :gun:

spewin that it sold was only $350 even if both needed rebulding i woulda been happy

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#9 _v8slrtorana_

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Posted 25 March 2008 - 08:20 PM

How have you been blowing the trimatics?
& What oil are you using?

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#10 _Lostit_

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Posted 26 March 2008 - 02:58 PM

err wasnt there a vb with a 308 /350 turbo factory fitted as well or was that a t400?

I cant remeber the name atm mind blank.

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#11 mr5000

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Posted 26 March 2008 - 04:59 PM

cant rember what oil it was bought it from yarravalley autos he reckond it was the only stuff to use in a traumatic n i did give both the trimatics a hard time the 1st 6cylinder one went boom on the last drive along wiht the motor

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#12 mr5000

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Posted 26 March 2008 - 05:01 PM

the other reason i cant stant them is it was problem after problem fix one anothe would source so i figured if i was gonna do that i might aswell get a ford but i couldnt do that so i got rid of the trimatic

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#13 _CHOPPER_

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Posted 26 March 2008 - 09:24 PM

err wasnt there a vb with a 308 /350 turbo factory fitted as well or was that a t400?

I cant remeber the name atm mind blank.

Fairly sure Dunny Doors up to VK had T350 as an option.

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#14 _UDLOSE_

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Posted 28 March 2008 - 11:47 AM

I'm pretty sure that WB stateos had T400s (atleast as an option). My mate had one and i'm positive that it was a T400 and i bought a turbo pattern 308 (11QT #) that came with a T400 attached that had come out of a WB stateo aswell.

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#15 _CHOPPER_

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Posted 28 March 2008 - 04:54 PM

Just re-read the WB service manual suppliment and it stated that the T350 was the BASE equipment transmission on WB Statesmans. So it sounds like the T400 was an option on the WB's.

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#16 yel327

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Posted 28 March 2008 - 08:58 PM

WB Statesman up to mid 1982 had TH350 and was coded on the BODY plate as M38. After that they were all Trimatic. TH350 replaced TH400 in HZ and VB in 1979 but was plated as M41 (in HZ anyway - not certain about coding for VB). No Holden after mid 1979 was fitted with a TH400 although there may have been a few C20 or C30 trucks sold new by GMH with one, however in these the TH400 was an M40. The TH350 finished in VH at the same time it finished in WB. All VK plus all Holden VL V8 were trimatic.
A well built trimatic is actually stronger than a TH350. If you want a tough auto use a TH400 (3L80), unless you want to run electronics then use a 4 speed TH400 (4L80E), although I doubt one of these would fit easily in a Torana. I'm certain a 6L80E wouldn't.

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#17 TerrA LX

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Posted 28 March 2008 - 09:43 PM

AFIK Turbo boxes were deleted around august 1982 and replaced with Tri-matics in the WB range.

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#18 _Adam Perth_

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Posted 30 March 2008 - 09:50 PM

WB Statesman up to mid 1982 had TH350 and was coded on the BODY plate as M38. After that they were all Trimatic. TH350 replaced TH400 in HZ and VB in 1979 but was plated as M41 (in HZ anyway - not certain about coding for VB). No Holden after mid 1979 was fitted with a TH400 although there may have been a few C20 or C30 trucks sold new by GMH with one, however in these the TH400 was an M40. The TH350 finished in VH at the same time it finished in WB. All VK plus all Holden VL V8 were trimatic.
A well built trimatic is actually stronger than a TH350. If you want a tough auto use a TH400 (3L80), unless you want to run electronics then use a 4 speed TH400 (4L80E), although I doubt one of these would fit easily in a Torana. I'm certain a 6L80E wouldn't.

agree. but my 7/82 WB stato is tagged M40, so is Trimatic, so they must have deleted the T350 before august 1982.
at least july 1982
June?

i think the last T400 rolled out approx in late 1978.

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#19 yel327

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Posted 31 March 2008 - 02:06 AM

I think the TH400 must have been around slightly longer, as no HZ GTS was ever fitted with a TH350 and from memory these finished in very early 1979.

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#20 Dr Terry

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Posted 31 March 2008 - 10:19 AM

Hi Guys.

It did vary from factory to factory, so there is no exact date of changeover. Some factories may have had more transmissions stockpiled than others.

I've found that the change from TH400 to TH350 was around June '79 & the change from TH350 to Tri-Matic was completed around November '81.

There were no TH400 transmissions fitted to any Holdens after 1979. There were no TH350s fitted after 1982. Optional or otherwise. Whenever GM-H refers to an engine or transmission as being 'base' equipment, they actually mean what came as standard. The term 'base' was used regardless of whether there was any other option or not.

Dr Terry.