13 replies to this topic

[Ando]

I'm contemplating the idea of putting a falcon T5 behind a turbocharged 202 in my UC hatch.

Diff will be a 28 spline Salisbury lsd 3.08 ratio, rear discs.

  

My only concern would be the greater torque load on 2,3 & 4 gears under say, hard acceleration. I don't do static burnouts etc.

Only a bit of spirited driving from time to time. 

 

Has anyone done this motor/gearbox combination before? Would like to hear some feedback. Cheers

 

Pic of Colin's SLT hatch

 67647698_2580915325253473_5212262883248832512_n.jpg   56.99K   8 downloads

 

 FalconT5.jpg   7.63K   6 downloads

 

 

 

 

 

 

[axistr]

My experience with T5s is 300hp and 350ft of torque. Much more power or driven like you don't respect gearboxes and they start having problem with cracking the main aluminum housing. I also used to commonly see stretching of the housing, then the preload of the front input shaft tapper roller bearing dropped off causing miss alignment. Then the transmission starts making a quiet wiz in all but 4th gear. If you didn't re-shim the bearing this generally lead to front drive gears and cluster failure. I did my fair share or repairing customers T5s behind XR8s, again driven by owners with a little respect didn't have a problem. 

[bat 53]

ran one behind a L67 v6 in my eh van .drove it hard a few times no problems 

it was in there for 8 years

[Redslur]

Ran one for ages behind my 500hp 355 with no problems. I did have the steel plate re-enforcement mod done to it though.

[axistr]

G'day John that photo looks like one of those original UC SLT's very rare, is this your car.?  

 

Ha Ha just read the bottom of the original post which answers my own question. Bugger getting old and stupid.

Edited by axistr, 03 February 2021 - 07:16 AM.

[claysummers]

Blacky on FB EK forum is putting T5 behind a supercharged 3.3. Cable clutch.
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[Ando]

I've got a TKO600 behind 530 hp stroked 308 in my white SS & I'm very happy with the matchup. Not a cheap exercise though.

 

The plan is to build an SLT tribute as I only know of one driving SL/T which Colin owns. James Baker was the original owner.

My UC SL Deluxe hatch will be restored to the factory paint & trim etc, except for the addition of an 'SL/T dealer option' performance upgrade.

I'm able to get a hold of all the new old stock NGM hardware to achieve the look like Colin's engine bay.

With the benefit of hindsight, we should be able to address all of the historical problems.

Referencing James's written experience & knowledge will be beneficial.

 

The falcon T5 should fit in nicely with hopefully a hole trim 10-20mm rearwards. TheT5's inherent weaknesses will have to be addressed. 

The turbo torque curve can be severe in a short space so I need to take that into account & be sure the T5 can cope, hence my initial question.

I wont be thrashing the car, that's not my style of driving. There all just thoughts & ideas at the moment but I do like the SL/T idea.  

 

Cheers Ando 

Edited by Ando, 03 February 2021 - 09:03 AM.

[76lxhatch]

Some of the guys with the V6 turbo setups have persisted with them to pretty quick times, seems like a good comparison. They're not the strongest by a long shot but then the 202 isn't going to be a torque monster either.

[yel327]

Are they the same basic box as used in VK and VL GroupA? As above, surely if they can handle that, they'll handle a blown 202 in a lighter car with road tyres on it. You'd think if the 202 was going to produce enough power to turn a T5 into scrap, it'd also be busting Salisbury gears and the bottom end of the 202 giving up. I guess you can break anything though if you try!

[Ando]

Yes anything can break with abuse. I'm not sure if the VK-VL boxes are the same as the EL 'world class' T5. Someone will know. 

I think the T5 is the logical choice without modifying too much. It should make for a nice weekend tourer with a bit of poke.

Altra9 have developed an LSD centre & 28 spline axles for the UC Salisbury. Coupled with the UC rear disc brakes which I have, should be a nice combo. 

I'm more excited about building this UC than the Chamois SS I'm restoring atm lol. 

[yel327]

Why not just grab any HQ to WB passenger Salisbury and buy a Trutrac centre for it with new axles in Holden pattern? The UC discs will go straight on. Just need to shorten the housing and weld on Torana lower arm mounts. Although still not super strong it will outlast a small Salisbury.

[Ando]

Why not just grab any HQ to WB passenger Salisbury and buy a Trutrac centre for it with new axles in Holden pattern? The UC discs will go straight on. Just need to shorten the housing and weld on Torana lower arm mounts. Although still not super strong it will outlast a small Salisbury.

 

I've considered the H series Salisbury & yes, it's a good option.

All I have to do is change out the centre & axles in the UC diff which make more sense to me.

The Trutrac is a lot better but for the usage this car will do, the bigger axles & lsd swap is simpler to do.

Crown & pinion are the same as the banjo. They seem to hold up to increased power to a point, for example NC racing banjo diffs with Trutrac & 28 spline axles.

The bango diff in my chamois SS got the Trutrac centre & 28 spline axles. It should be ok behind a mild 308 Trimatic cruiser.

[yel327]

Cool. Just thought it might be an easy option if you are going to the trouble and cost of a new centre and axles for a disguised banjo to spend a little more on a Holden/Statesman diff. Axles and centre will be the same/similar cost. You’d need a new tailshaft though but I suspect you’d be using a V8 yoke in the existing plan anyway meaning at least a V8 LH-LX tailshaft?

[Ando]

Yes the tail shaft will be most likely be V8 equivalent or customised to suit.