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Old 03-22-2018, 06:31 AM   #41
AdamSanta85
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FYI you can open Ashcroft's calculator in Developer Tools and remove the disabled attribute from the HTML input elements and then you are free to mess with the transmission gear ratio values... I am not terribly knowledgable about this stuff but with the 1.4 transfer case on the GT-500 tranny it doesn't look that crazy... Looks like the Ford Falcon Ute tranny would be better for us but I doubt they are as available... I imagine an LS could pull fine in 6th at 2200 @ 70, if not drop to 5th and away you go.

I can't imagine why an extra 155+ ft lbs of torque and 213 horsepower couldn't over come the gear rpm differences, especially all motor power

This setup with a 1.2 T-case does not look as nice with 1879rpm @ 70 in 6th. The 1.6 transfer case actually looks pretty awesome at 2628 @ 70

Calling Red90, learn me

https://en.wikipedia.org/wiki/Tremec...0_transmission

http://www.ashcroft-transmissions.co...atio_calc.html

GT-500 ratios, 1.4 t-case, stock axle 3.54, 33.3 (255 KM2) tire size



Current setup - R380 Shortbellhousing 44A with .732 taller 5th, 1.4 t-case, 33.3" tire



GT-500 ratios, 1.6 t-case, stock axle 3.54, 33.3 (255 KM2) tire size

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Old 03-22-2018, 07:11 AM   #42
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I just sent Andrew from LRA an email about his setup. I also invited him here to post, hopefully he chimes in. I really hope this works out. Otherwise I will likely just go autotragic.
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Old 03-22-2018, 07:24 AM   #43
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Even Quaife six speed gearboxes are pretty crazy amounts of money. But they are very very strong. https://shop.quaife.co.uk/quaife-lan...ential-gearbox
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Old 03-22-2018, 11:36 AM   #44
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Spoke to Rakeway today on phone. Very helpful and educated me on a few things I didn't even consider. Waiting on a quote from them. They can do a T56 Magnum setup that will do what we need and land the shifter basically where we want it. This is the setup ECD is using on some of their LS trucks. They had to do custom shifter setup for the T-case. If you look at ECD's manual trucks you will see they use 2 T-case levers, one for Hi/Low and other for the locker. They said you need to be very gentle with low range usage otherwise things can go boom. With the power of an LS I don't think I need low range at all anyway.

I am also exchanging some emails with LRA. He has 3 trucks running T56. He said they totally rip.

Rakeway setup, note the 2 protruding transfer case levers
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Old 03-22-2018, 07:25 PM   #45
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Thats a very interesting looking transmission tunnel....Another custom piece?
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Old 03-27-2018, 08:55 AM   #46
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Ok I have spoken with both Rakeway and LRA. Both extremely professional, helpful, and knowledgeable . Unfortunately to do either setup is going to run between $5k-$9k for not counting engine + mounts etc and require more fabrication than going with Nicks kit. I do not have the budget for that, if I did I am sure it would be awesome.

Pretty sure I am going to be putting a 6L80E in my truck with either a Gen IV 5.3 or 6.2 Vortec engine. Hoping to pick up an engine and maybe tranny next month with build starting in November after the good weather. I've already got my Uncle Douglas tunnel adapter, first part of many...
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Old 04-02-2018, 09:12 PM   #47
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[QUOTE=jymmiejamz;15852]
Quote:
Originally Posted by javelinadave View Post
I have no idea how strong an R380 QUOTE]



I thought the 380 in R380 meant that it could handle 380 NM of torque, but I may be wrong about that.
You have it right... rated to 380nm... think it?s in the rebuild manual somewhere
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