chev project

[Oz Brad]

I've got the engine in. perhaps for good.

[JimmieD]

Say, Brad, refresh my memory: what am I looking at there? I see a turbo, and that looks like it might be an oil burner engine? Sitting in a...? Looks like you've got a good place to work and lots of toasty warm sunshine.

[MoparNorm]

I don't know Jim, the first problem I see is the steering wheel is on the wrong side of the frame....

[Oz Brad]

WC51, 6.2 chev diesel, t56 trans (or may be one day auto), NP201 running the pto.

We have to drive on the left side of the road. Its just one of the tricks that keeps us from falling off from the underside of the planet. You know, with gravity pushing downward and all.

[JimmieD]

Ha ha, a 'gotcha' on Norm! And what is the T56, a 5 speed? What sort of power ratings on the 6.2? Looks like it's all a good fit in the chassis and should be a very nice driver.

[MoparNorm]

Ha ha, a 'gotcha' on Norm! And what is the T56, a 5 speed? What sort of power ratings on the 6.2? Looks like it's all a good fit in the chassis and should be a very nice driver.

Gotcha???
Jim, he'd have a hard time driving that rig without the steering wheel on the wrong side in OZ, or anywhere in the Commonwealth ....unless he was delivering the mail.....= )

[JimmieD]

Naw, naw, I was talking about his great comeback about gravity and all....so he 'gotcha' on your funny hah!

[Oz Brad]

T56

The Borg Warner / Tremec T56 (the MM6 variant):

1 - 2.66
2 - 1.78
3 - 1.3
4 - 1
5 - 0.74
6 - 0.5

Its really a muscle car trans but I'll give it a go.

Used by:
GM in corvette, GTO, Holden, Camaro.
Dodge in viper and Ram SRT10.
Ford in mustang cobra and falcon.

These ratios are available as well but are a bit harder to find.
2.97
2.07
1.43
1.00
0.8
0.62

[MoparNorm]

Wow!
Those are very tall gears! Great for the highway to travel at speed, but very high for offroad driving. What type of terrain do you mostly travel, when you are off-road?
Up here we go the other way, using mostly NV4500's
First Gear 6.34
Second Gear 3.44
Third Gear 1.71
Fourth Gear 1.00
Fifth Gear 0.73
Reverse 6.34

I'm curious as to the double overdrive, do you guys have speed limits down under?

[JimmieD]

They sure are sweet as far as being close ratio! If you had the right final drive ratio it might be just the ticket for some rigs.

[Keith in CO]

6.2/t56

The Borg Warner / Tremec T56 (the MM6 variant):
1 - 2.66
. . .

My TH400 auto is 2.48, and I had to go to 4:1 with double T-cases to get good compression braking, even though the torque multiplication of the auto trans worked OK uphill. I suspect you will have to do something similar to wheel it. It may be cheaper and better to get a 2WD manual transmission, like the NV4500, with a much lower first gear.

I've heard about top-mounted turbos on 6.5s used in vans, but I've never seen one - is that what you have or is it an aftermarket unit? Should work well for your "wrong-side" steering ;) as I presume the exhaust goes down and out the left side.

[IHWillys]

...
I've heard about top-mounted turbos on 6.5s used in vans, but I've never seen one - is that what you have or is it an aftermarket unit? ...

I had a 6.5TD from a van and the turbo is placed on the back of the engine in the middle, so this setup here is not like the van turbo setup I had.

Ken

[Juan]

Thatīs not a van setup and I donīt think itīs a GM oem setup in any way.

6.2 were NA, 6.5 truck versions had the turbo mounted on the other side of the engine over the manifold but not as high like the one on the picture. Van versions and Hummer versions had the turbo over the engine valley behind the intake plenum like Ken said.
I also notice that the exhaust manifold on the right side has the down pipe connection to the front when all the Manifolds (turbo and NA) has the downpipes to the back.
It maybe a Banks turbo setup but I donīt recall the turbo sitting so high over the head.
I donīt know if itīs possible but they may have switched the manifold to the opposite sides for some reason. Maybe interference with the steering gear.
It has a blockoff plate where the fuel lift pump should be, Maybe because clearance issues with the exhaust manifold exit mounted like that?

Now Iīm curious, What turbo setup are we looking at?

[Oz Brad]

BINGO Juan

They are OE 6.5 manifolds on the wrong heads.
reasons:
- 3" exhaust down and out on the LHS (RHS had steering and starter down low.
- places the turbo LHS (RHS has brake booster)

Between the turbo and the manifold is a extention pipe to bring the turbo in over the head instead of half out of the bonnet.