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Old 04-20-2015, 12:13 AM   #1 (permalink)
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LQ9 4L65E(?) Questions

Might have one coming for the buggy.

But I'm a junkyard SBC kind of person.

What all should I grab with the engine?
I've been told 04 Escalade, AWD 6.0 Which as far as I have read is an LQ9

Harness, ECM, are a given, 02s etc I assume. Basically save anything that connects to the engine harness until I'm sure I dont need it.........

Fuel pump will end up inline so I'd guess that as long as Idont much up anything to the rails I can just plug and play aftermarket stuff.
Its DBW as far as I know, so pedal, do I need dash harness?

Is the stock PS pump worth keeping? Or just head straight to PSC?

If I have access to get anything else, just trying to plan ahead and save some cash later on when I'm smashing my face into a wall wishing I had grabbed XXXX............


And the trans...........Its an AWD model, I dont know if thats a 4l60e or 4l65e, but are either one worth a shit? What I want is a 6l80e and convert to tap shift, but I dont see myself spending the money, and if I dont run the 4l then it will just get a RMVB th400.
I;ve seen mention of a Carl Rossler black box that allows full manual operation, and claims that it does the same as a fmvb, I would assume I can run the same Winters style shifter? I see a 4l60e option but not a 65? Just internal differances?
Should I put in a RMVB instead? The black box I've read just runs full line pressure full time, sounds like it could be an issue? But apparently it doesnt need anything else electronic, and if I blow one upn I could swap the box over to the new one and repeat?

Rig will be 6500lbs or so, 5 ton rockwells.........Likely a cam and headers on the 6.0, so 400 ish?? hp, is that too much of a demand for the little trans?

What about a case? My original plan was th400 to np205, almost seems like a waste to put the 205 behind the ls, so I would guess that an atlas is in my future.......or a Hero case. 27 spline enough with the 4l65? Dont really want to get into swapping outputs, kind of puts me back at the same spot of just putting a th400 in. And back to a 205 possibly since I know its bombproof. Suppose I could run a 27 spline intput 205, but I've never had one in the 40-50 cases Ive owned, so I assume they're not that common.........

Anything else I should be thinking about if I get to tear into the donor?

Or should I just fuck of and run a BBC because they make sense to me?
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Old 04-20-2015, 05:23 AM   #2 (permalink)
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6L80 needs a Gen IV motor for the reluctor wheel.
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Old 04-20-2015, 06:44 AM   #3 (permalink)
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Grab the mass air. Air box assembly throttle pedal and computer or convert to drive by cable and put a 4.8 litter throttle body on its actually bigger then 6.0 i was told. Ive got the lq9 4l65e with transgo manual shift kit with 241np case jeep tons cut 40 boggers np handling the abuse.
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Old 04-20-2015, 09:18 AM   #4 (permalink)
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Get the TAC module for the throttle pedal too. It looks like a small computer.
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Old 04-20-2015, 09:42 AM   #5 (permalink)
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Regarding the trans- I spoke with 15 different race car builders, transmission shops, and racers and 100% agreed that a 4l60 on my rig would be a time bomb..... And I'm 4300lbs on 37"s.


Personally, I'm into big tranny's. Especially in Vegas.
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Old 04-20-2015, 09:58 AM   #6 (permalink)
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6L80 needs a Gen IV motor for the reluctor wheel.
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Originally Posted by REDLYNER View Post
Regarding the trans- I spoke with 15 different race car builders, transmission shops, and racers and 100% agreed that a 4l60 on my rig would be a time bomb..... And I'm 4300lbs on 37"s.


Personally, I'm into big tranny's. Especially in Vegas.
So th400 then?
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Old 04-20-2015, 10:15 AM   #7 (permalink)
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So th400 then?
That'd be my choice - I can't really see where you'd need OD in your rig? Although seeing vids of you drive...
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Old 04-20-2015, 10:24 AM   #8 (permalink)
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That'd be my choice - I can't really see where you'd need OD in your rig? Although seeing vids of you drive...
I think I could get the trans for free.........Otherwise it was a no brainer. A th400 needs $$$ to do the job, the one in my big crew hooked up hard, but it had all kinds of clutches and a decent valve body.
On the other hand a th400 means np205, soI guess thats cheaper than a fancy case and a free trans
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Old 04-20-2015, 01:35 PM   #9 (permalink)
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The 65 is marginally stronger than a 60, but neither is suited for your use. I'd use a 6l80 and an aftermarket wheel or sensor, but that takes some time to get right.
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