GM Gen 4 conversion including LS - Page 49 - Defender Source
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  #961  
Old December 12th, 2015, 11:19 AM
nmarkiw
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Nicholas Markiw
1994 NAS D90 LS 5.3L
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1.2:1 D1 case will fit. The D2 case has different linkage and front drive flange.
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  #962  
Old December 12th, 2015, 11:36 AM
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mongosd2
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Frank Rafka
01 D2 96 D1 83 110
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Quote:
Originally Posted by 86Defend110 View Post
I don't think I'm going to use my Defender case with the LS because it's 1.4:1 would a locking case from a Disco 2 work for this conversion? Thanks
Yes, just swap the front driveshaft flange from your existing case and rear output housing for speedo…if it doesn't have CDL, just swap the complete front output housing

------ Follow up post added December 12th, 2015 11:39 AM ------

Quote:
Originally Posted by nmarkiw View Post
1.2:1 D1 case will fit. The D2 case has different linkage and front drive flange.
You can use the D2 case, change the front DS flange from your current case. If the D2 donor case doesn't have the CDL nipple, just swap the front output housing. You'll also need to swap your rear output housing for your speedo.

use your existing linkage...
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  #963  
Old December 12th, 2015, 11:41 AM
nmarkiw
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Nicholas Markiw
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...and the hi/low shift housing.
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  #964  
Old December 12th, 2015, 11:43 AM
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mongosd2
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Frank Rafka
01 D2 96 D1 83 110
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Quote:
Originally Posted by nmarkiw View Post
...and the hi/low shift housing.
huh…it's the same on both cases...
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  #965  
Old December 12th, 2015, 11:45 AM
nmarkiw
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Nicholas Markiw
1994 NAS D90 LS 5.3L
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No, different lever configuration. Cable vs linkage.
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  #966  
Old December 12th, 2015, 11:53 AM
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mongosd2
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Frank Rafka
01 D2 96 D1 83 110
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They swap right in, never had a issue with any of the t-case swaps we've done and I think we are up to 5, 110's, D1's, D2's and D90…

A quick edit on this…I did this on my 110, running a D2 box out a 2001, so it had the CDL, changed the flange on the Front and used the rear output housing for speedo

Did another 110 with a D2 without CDL, swapped the front and rear output housings

Not agruing, just clarifying
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  #967  
Old December 12th, 2015, 12:15 PM
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john
97 D90 ST / 1957 S1 109/ 1983 LS110
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D2 Lt230...

The locking centre differential was still fitted until early 2001, although the linkage to operate it was not attached, as Land Rover believed that the traction control and newly developed Hill Descent Control would render it redundant. The actual locking mechanism was removed in early 2001, before being fully reinstated (with linkage) with the facelifted 2003 model. Whilst the traction control system worked very effectively, it did not offer the same level of control and smooth operation as the vehicles fitted with the differential lock. Customer demand saw the diff lock controls fully reinstated as a cost option only (standard on top of range HSE/SE vehicles) on UK/Irish models, and aftermarket kits are offered by several vendors for those vehicles which were produced with the lock, but not the linkage.
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  #968  
Old December 12th, 2015, 01:10 PM
86Defend110
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Jesse
86 Defender 110 LS 5.3 In Progress
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Thanks for all the great input guys! Sounds like a bit of extra unnecessary work, which I already have enough of! Maybe I'll wait and find a 1.2 D1 case...
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  #969  
Old December 12th, 2015, 07:15 PM
nmarkiw
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Nicholas Markiw
1994 NAS D90 LS 5.3L
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Quote:
Originally Posted by nmarkiw View Post
No, different lever configuration. Cable vs linkage.
Picture of D2 and D1 hi/low shifter housing differences.
D2 is straight, D1/Defender is offset for linkage.
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  #970  
Old December 12th, 2015, 10:53 PM
DRDefender
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Peter
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Hi Nick,

I have been lurking in the thread for a while waiting for a D90. I finally got my hands on a 60th Anniversary this week. I sent you a PM regarding the parts I need from the list you sent me earlier. Do you have the adapters available?

Regards,

Peter
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  #971  
Old December 13th, 2015, 09:52 PM
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skitzy
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Nick
91 D90 2.5NA doing LS Gen IV Thing
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Recommended LT230 Transfer Case Ratio?

Quote:
Originally Posted by 86Defend110 View Post
Maybe I'll wait and find a 1.2 D1 case...
So many Lt230 Transfer case gear ratios. See @Red90 list of LT230 cases here: Land Rover Gear FAQ

Any recommended LT230 Transfer Case ratio for a Defender 90 GM Gen IV LS Swap?

3.32
4.34
1.003
1.222
1.1923
1.211
1.206
1.41
1.667
2.69
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  #972  
Old December 14th, 2015, 01:05 AM
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Nick
91 D90 2.5NA doing LS Gen IV Thing
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Quote:
Originally Posted by nmarkiw View Post
The Gen IV truck engines fit. LMG, LC9, LY5, LY6, L92, LSA For the defender, the truck intake clears the hood when you turn it 180 degress. The low car intake fits the Discovery. Yes, this fits Discovery 1 and Classics too.
Will this engine and transmission combo work?

2009 GMC Sierra 1500 4WD
VIN: 3GTEK13M59G138579
Odometer: 51033 KM

LH6
Vortec 5300 LH6
6 Spd Transmission
aluminum block?
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  #973  
Old December 14th, 2015, 06:26 AM
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john
97 D90 ST / 1957 S1 109/ 1983 LS110
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The LH6 will work.. .thats what I have in my truck...not sure about the trans.
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  #974  
Old December 14th, 2015, 03:45 PM
Mostlymonki
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Matt
1998 130, 1988 110
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Quote:
Originally Posted by Landy_Andy View Post
Umm.... 4" off the MAF I believe....

I was looking at one of these for a snorkel setup :

Ump 4 Inch Super Air Filter With 8 Inch Extra Long Canister For Engines That Have 250Hp To 300Hp

Or you could use a truck filter like on Rob's ORA Eurofighter....
the UMP one looks good, I'll have to get the motor in and see where theres space... though i was thinking dual snorkels might work well - T pipe off the TB and send one either way... maybe use 2 smaller defender style filters that way instead and not worry about choking it.
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  #975  
Old December 14th, 2015, 04:08 PM
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mongosd2
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Frank Rafka
01 D2 96 D1 83 110
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Quote:
Originally Posted by skitzy View Post
So many Lt230 Transfer case gear ratios. See @Red90 list of LT230 cases here: Land Rover Gear FAQ

Any recommended LT230 Transfer Case ratio for a Defender 90 GM Gen IV LS Swap?

3.32
4.34
1.003
1.222
1.1923
1.211
1.206
1.41
1.667
2.69
You need to look at that page again…your posting gear ratio's for overdrives, maxi drive low range gears and such…

Here's a better list:
There are two different 1.2:1 gear sets, the earlier 1.222:1 gear set has stronger teeth than the later 1.211:1 gear set. The change to smaller, weaker teeth was made in the interest of reducing noise.

1.222:1 set was fitted into 28D and 32D (prefix) LT230's.

The weak 1.211:1 set was fitted into 36D, 37D, 38D, 40D, 41D, 59D, 61D, 62D, 68D, 69D, 70D, 80D, and 90D LT230's.

1.410:1 was fitted to 13D, 22D, 25D, 43D, and 57D LT230's.

1.192:1 was fitted to 27D and 29D LT230's.
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  #976  
Old December 14th, 2015, 10:53 PM
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Andy
1999 D2, 1985 D90 truggy & 1951 S1
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Quote:
Originally Posted by Mostlymonki View Post
the UMP one looks good, I'll have to get the motor in and see where theres space... though i was thinking dual snorkels might work well - T pipe off the TB and send one either way... maybe use 2 smaller defender style filters that way instead and not worry about choking it.
If you go that route there are good deals on EBay for Donaldson filter housings with 2.5" - 3" outlets, could work out cheaper than the UMP setup if your lucky
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D100 5.3 LS powered truggy under construction....
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  #977  
Old December 15th, 2015, 12:58 AM
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skitzy
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Nick
91 D90 2.5NA doing LS Gen IV Thing
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Quote:
Originally Posted by mongosd2 View Post
1.410:1 was fitted to 13D, 22D, 25D, 43D, and 57D LT230's.
Thanks @mongosd2 for clarifying. I went crawling around in the garage and found this Serial Number on an LT230 Transfer Case: 22D168847D. So per your chart it is a 1.410:1.

"22D 1.410 Defender 4 Cyl bar 2.5 Diesel Nat Asp.", per some random googled website.

So this 22D 1.410 ratio LT230 is good-to-go for Nick's Gen IV LS swap?

Thanks.
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  #978  
Old December 15th, 2015, 11:57 PM
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Landy_Andy
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Andy
1999 D2, 1985 D90 truggy & 1951 S1
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Quote:
Originally Posted by phoenix37 View Post
The LH6 will work.. .thats what I have in my truck...not sure about the trans.
The 6 speed is the 6L80E.... as discussed in the first few posts of this thread....
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  #979  
Old December 16th, 2015, 12:47 AM
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mongosd2
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Frank Rafka
01 D2 96 D1 83 110
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[QUOTE=nmarkiw;697698]Picture of D2 and D1 hi/low shifter housing differences.
D2 is straight, D1/Defender is offset for linkage.[/QUOTE

I changed the front output housings...so they had a center lock, the shifter linkage is part of that
Sorry for the confusion
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  #980  
Old December 16th, 2015, 08:05 AM
35xj
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dave rees
63. 88"
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Sent a pm regarding price. But does anybody know the total overal length of a 5.3/6l80/230? Trying to cram it into a series project....
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