Full Manual Trimatic

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Lorin Mandaloniz

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Aug 5, 2024, 3:22:43 AM8/5/24
to nodkofiper
snipHerne if you put your shifter into top gear at a stop then hit throttle to floor will it take off in top gear or will it change back to a lower gear ?

snip



Thanks Hayden


Herne, How do you switch from "auto mode" to "manual mode", do you just pull it back from 3rd (or drive) to first gear ?





I think the point Drag lc is raising, is the fact that the "shifter" does not switch the "gearbox" from auto to a manual shift, (unless its tiptronic) a ratchet or "bang" shifter (such as B&M) allows driver to change gears without the risk overshooting and hitting the wrong gear (or neutral), but won't change the way the actual gearbox changes anymore than the standard shifter could (just alot better to drive with a ratchet shifter)











Unless it has a manual valve body the gearbox is still going to be a auto and will change up and down by itself, but by manually holding the shifter back in a low gear (eg 1st gear) this will stop the gearbox from changing to second untill you pop second, and may seem as if it changes harder than normal when you do.





When you have a auto (regardless of shifter) if you come to a set of lights and you have the shifter in top or 3rd, your gearbox automatically goes back to first ready to drive away from a standstill, with a manualised auto ,if you stop in top and don't manually pull the shifter back to first the box will take off in top.





MT


Herne, i do understand what your saying..its a similar shifter to a star shifter, like what i had in my old torry..with 308, same thing ratchet or auto..



However i can do that in my vk comm with standard factory shifter... stick it in 1 and it wont change till i put it to second



When i had a 6 in a torry with full manual box, i had to physicaly shift to 1st to get it to go to 1st otherwise it would stay in 3rd


I believe its possible to modify most autos so that they no longer provide the safety of changing gears in extreme situations, such as trying to take off in top, or knocking back to first at too high a speed. Thus it will still provide normal operation in drive, but can act somewhat like a manualised trans when desired. Sounds like this is what has been done to yours?


Herne,



you have a trimatic right?



so you are to scared to put it in top gear at a stop,crawl and stand on it?.that is also a good way to check actual stall speed of converter but never mind thats off topic!.



"Double diaphram" sure it wasnt a steel twin ring servo piston?.



mmmmmmmmmm i am yet to see an arangement like you are explaining but i still doubt you can have a full manual hyd system inside the tranny and then still have the std auto it would have to be a very very fancy valve body as alot of the stuff is removed permently from the circuit when one is converted to Full manual shift yes ive actually modified a std valve body and have also seen inside a few diffrent manual valve bodys from diffrent auto shops.





Herne have you seen what is removed from valve body when converted from std to full manual shift?







Thanks Hayden


I think you will find the same problem with that. Being a young hoon, I've been in loads of my mate's cars with 'Stage II' Shift Kits, and I reckon they are a kinda pointless mod, at 1/6th throttle from 1st to 2nd gear, it's ridiculous. But autos do get sloppy over the years. The vehicles I've been in that apparantly have 'Stage I' Shift Kits seem to be a bit more on the money. If I wanted a proper auto I would fully manualise it, otherwise I would just have it rebuilt.



But with the amount of power than you have, don't even bother with autos; chuck a manual in there and call it a day.


I think the point of the question is what boxes bolt to a trimatic pattern block



i.e

Aussie 4 speed







Were there any others... what did the VB-VK commy have in it ?

Wasn't there a 5 speed option for the V8 ?




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hi all I am wanting to put a 308 into a holden ..has any one done it and can tell me what to expect?will a v8 diff go straight in ? will gearbox mount be the same?will I have to put bigger brakes in for a wof?


I swapped from a 202 to a 308 into my Commodore last year and even if I subtract the entire cost of fitting a Toyota gearbox then it still cost me well over $5K and that was with a sub $500 engine that I did not rebuild.


Gearbox depends on if you want/have an auto or manual. trimatic is piss easy, 3 on the tree manual requires a bit of parts hunting. Box mount is the same. Engine mounts are easily available. You'll need the V8 radiator and driveshaft to suit your box


^^^^^ what these guys have said as long as you have the std driveshaft eg ( your one hasnt been chopped) you'll be sweet, I cant remember if HX uses a cable trottle setup if so you'll need a v8 throttle cable

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