6.2 diesel in a 60 series, 4 speed? or NV4500?

[torslinning]

So, I'm wondering if anyone used the stock 4 speed fj60 transmission with a 6.2 diesel swap.

I already have a bellhousing and clutch for it, and it would save the 650$ for the NV4500 to lc xfer case adapter. I already have an NV4500, but I could sell it for 700$.


any thoughts? is the overdrive gear from a NV4500 that necessary?

[roscoFJ73]

Originally Posted by torslinning

So, I'm wondering if anyone used the stock 4 speed fj60 transmission with a 6.2 diesel swap.

I already have a bellhousing and clutch for it, and it would save the 650$ for the NV4500 to lc xfer case adapter. I already have an NV4500, but I could sell it for 700$.


any thoughts? is the overdrive gear from a NV4500 that necessary?

Diesels like to rev lower at highway speed. You really need something with a final drive of better than 1:1 to save you ears and your sanity

[rchalmers3]

Sorry, I'm not clear. You have a bell housing, flywheel and clutch for what, the 6.2 to the Toyota 4 speed?

If that's the case, I think roscoe is pointing at the desirable underdrive aspect of the NV4500. In which case it's time to find the T-case adaptor!

Rick

[torslinning]

Originally Posted by rchalmers3

Sorry, I'm not clear. You have a bell housing, flywheel and clutch for what, the 6.2 to the Toyota 4 speed?

If that's the case, I think roscoe is pointing at the desirable underdrive aspect of the NV4500. In which case it's time to find the T-case adaptor!

Rick

I have everything to bolt up the 4 speed right now, but am seeing the benefit of the .73 overdrive in the NV4500. The only question is cost.

It will cost $700 to install the nv4500, and $0 to install the 4 speed (I will actually make $700 from selling the NV4500 totalling a $1400 difference).

[spotcruiser]

Hey Tor,

Besides gear ratios, I think you also have to consider engine placement. I don't know about the 6.2 specifically, but in a 350 installation the extra length of the NV4500 moves the engine further from the firewall. Isn't the 6.2 pretty much the same size as a 350? With the stock transmission, will you have issues at the firewall? Just something else that might need to be considered.

Todd.

[torslinning]

Originally Posted by spotcruiser

Hey Tor,

Besides gear ratios, I think you also have to consider engine placement. I don't know about the 6.2 specifically, but in a 350 installation the extra length of the NV4500 moves the engine further from the firewall. Isn't the 6.2 pretty much the same size as a 350? With the stock transmission, will you have issues at the firewall? Just something else that might need to be considered.

Todd.

You're right Todd, the NV4500 is twice the size of a 4 speed, and that can make it possible to get it into original position (but not quite). Also a consideration though.

I just wanted to see if someone here can convince me to save $1400 on this swap. It doesn't sound like it...

[boots4]

If I had the choice between a 4-speed or a 5-speed that has an overdrive I wouldn't think twice about it. Definitely go with the overdrive. Since you're doing the work, do it now because more than likely you'll wish you went with an overdrive and will end up ripping out the 4-speed and put one in later so you're really saving money doing it the first time.

[roscoFJ73]

Originally Posted by rchalmers3

Sorry, I'm not clear. You have a bell housing, flywheel and clutch for what, the 6.2 to the Toyota 4 speed?

If that's the case, I think roscoe is pointing at the desirable underdrive aspect of the NV4500. In which case it's time to find the T-case adaptor!

Rick

I was actually suggesting something with an overdrive,maybe 1:1.25 or there abouts

[crushers]

have you ever driven that POS NV4500?
IF you want a 5 speed then go the H55F, it shifts smooth, it is quiet and reliable.

the 4500 shifts like...well...a truck tranny.

[made4surf]

Originally Posted by spotcruiser

Hey Tor,

Besides gear ratios, I think you also have to consider engine placement. I don't know about the 6.2 specifically, but in a 350 installation the extra length of the NV4500 moves the engine further from the firewall. Isn't the 6.2 pretty much the same size as a 350? With the stock transmission, will you have issues at the firewall? Just something else that might need to be considered.

Todd.

The 6.2 is around the same size as a big block 454.

[mel lowe]

Will that pos nv4500 fit behind a 5.9 cummings.

I may be interested it....

[FL cruiser]

I couldn't imagine not having an overdrive behind the 6.2 if it will see highway use. I use 4th gear on the highway sometimes when towing something heavy, and any sustained speed over 60 MPH is too many RPM's and too much engine noise.

Will that pos nv4500 fit behind a 5.9 cummings.

I may be interested it....

It will fit fine behind a Cummins if it's the Dodge version that has a 1" longer input shaft than the GM version.

[GM60]

I guess a lot depends on diff ratio and tyre diameter but the 6.2 can run with some pretty tall gearing and I would definately want a 5 speed box not the 4 speed.
My 6.2 runs original size 7.50-16 tyres 4.11 ratio and stock 5 speed.
I find myself often wishing I had a sixth gear.

[rchalmers3]

Originally Posted by roscoFJ73

I was actually suggesting something with an overdrive,maybe 1:1.25 or there abouts

Sorry, I wrote under but meant over.


I don't know the stats, but isn't the NV trans loaded with a desirable low ratio 1st gear as well as the OVERdrive 5th gear?

Something like 6:1 or so? Sounds like a really interesting transmission, unless the noise it makes is something outside normal for a trans. Which I doubt.

Rick

[roscoFJ73]

Originally Posted by rchalmers3

Sorry, I wrote under but meant over.


I don't know the stats, but isn't the NV trans loaded with a desirable low ratio 1st gear as well as the OVERdrive 5th gear?

Something like 6:1 or so? Sounds like a really interesting transmission, unless the noise it makes is something outside normal for a trans. Which I doubt.

Rick

Not sure about the ratios but the Toyota 5 sp has a nice low 1st and even better if you have 4.11 diffs and the 2.296 low ratio t/case

I think anything would be better than a 4sp if its intended for highway use

[torslinning]

The Nv4500 has a 6.34 to 1 1st, and a .73 5th making it the best of both worlds per say. Looks like I'm spending the money for that AA kit. Will be calling Georg tomorrow for an order.

[Granite Grinder]

Originally Posted by torslinning

The Nv4500 has a 6.34 to 1 1st, and a .73 5th making it the best of both worlds per say. Looks like I'm spending the money for that AA kit. Will be calling Georg tomorrow for an order.

Except it shifts like a 5 ton truck. I've gotten good at double clutchin' owning an FJ40 with an sm420.
GG

[FL cruiser]

The earlier NV4500's had the low 6.34 1st gear. The later NV4500's had the 5.6 first gear. although not as low, they shifted better.

[rchalmers3]

Originally Posted by FL cruiser

The earlier NV4500's had the low 6.34 1st gear. The later NV4500's had the 5.6 first gear. although not as low, they shifted better.

When did they change ratios?

Rick

[FL cruiser]

92/93 on the Dodge versions. Not sure on the GM.
The Advance Adapter catalog said the 6.34 version was only produced the first two years the NV4500 was built making it more rare.

[TheBossHog]

Hi,

Have you considered getting a T-Case with a centered output and swapping your Toyota axle with a Dana 60/70 or Corporate 14 bolt? Might end up being a better option than paying all that cash for shipping an adapter part all the way from Aus. I mean you can always sell the Toyota T-Case and Axle to help pay for the ones that will fit properly behind a NV4500. My 2 cents.

Oh by the way, with current diesel prices, if the overdrive on the NV4500 saves you only 2 miles to the gallon you will save well over $700 less than 20000 miles later. Thats under 2 years use for average American driving. The more you drive on the freeway and the more gas prices go up the more you save with the overdrive.

[crushers]

or, he could sell the cruiser and buy a chevy and have a turn-key operation (and maybe even some cash left over to buy the new liquid gold to fill the tank)

[torslinning]

Originally Posted by crushers

or, he could sell the cruiser and buy a chevy and have a turn-key operation (and maybe even some cash left over to buy the new liquid gold to fill the tank)

But then I would have a POS with good running motor ;-) Instead I can have white gold (white '83 cruiser) with that chevy engine.

[torslinning]

for those of you who have done this swap, did you buy a driver side clutch slave bellhousing? or did you go with the stock passenger side?

I can see some clearance issues with my driveline here, so any suggestions would be appreciated...