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How much power do you guys think I can build?

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Old 04-07-2012, 08:17 PM
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i have an escalade you can buy to get that front diff haha.
Old 04-07-2012, 09:14 PM
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Originally Posted by grey matter 04
your ls6 cam has a .025 smaller base circle
you need a longer pushrod not shorter

my heads are milled .040 and i run a 7.4 pushrod with that ls6 cam
Alrighty. I suppose I took some bad advice then. What length do I need?

Originally Posted by 1Bear
There is nothing wrong trying it the way you are, but if you do decide to go on the hunt for a AWD front differential, all the GMT-800 Yukon Denali's and Escalade's (AWD versions), not to mention the Sierra C³'s came with 3.73's. The front axle from a Yukon Denali or Escalade would obviously be the easiest to locate.
I never looked into it, but I was going to see if I could source just the housing and axle. I wonder how much they cost frm GM.
Old 04-08-2012, 08:11 PM
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How do I calculate how long of a pushrods I need?
Old 04-08-2012, 08:33 PM
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You can't know the length of the push rods needed until you measure. Once you have the heads and cam in the motor, use a pushrod length checker to find what size you need. Every engine is different. You will be very disappointed if you put the wrong size in.
Old 04-08-2012, 10:31 PM
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stock heads unmilled i would run a 7.425 but double check it just to be safe
But i would run that 7.425 with no worries...just me no checking
Old 07-18-2012, 08:00 PM
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I gotta bump this up. I was talking with a coworker of mine explaining my build. Turbo, 4L80E, Trutrac, AWD etc.

Well, he swears I'm going to blow everything up. The transmission won't hold, the drivelines will break, it's only a 10 bolt so that's going to explode, and let's not mention the front end, no way that's going to take it! It's the tiniest front end ever!!

Basically, I got laughed at.

What do you guys think? Think I'll break everything?

Last edited by iregret; 07-18-2012 at 08:37 PM.
Old 07-18-2012, 08:07 PM
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Originally Posted by iregret
I gotta bump this up. I was talking with a coworker of mine explaining my build. Turbo, 4L80E, Trutrac, AWD etc.

Well, he swears I'm going to blow everything up. The transmission won't hold, the drivelines will break, it's only a 10 bolt so that's going to explode, and lots not mention the front end, no way that's going to take it! It's the tiniest front end ever!!

Basically, I got laughed at.

What do you guys think? Think I'll break everything?
does your coworker drive a mustang??
Old 07-18-2012, 08:14 PM
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The 4L80E with a Transgo HD-2 shift kit would laugh at you, asking for more power.

The 10 bolt at that power will be fine, the factory G80 will let go sooner or later. Upgrade to a Tru Trac and you're fine.

I'm not too knowledgeable on front diff stuff as I've never owned a 4x4, but I see many members here clicking off 10 second, some even in the 9 second range launching in four wheel drive and the stuff seems to hold up.

Do it, prove him wrong.
Old 07-18-2012, 08:44 PM
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My stock front end seems to be doing fine on 4wd launches with drag radials...

I'm guessing you would top out mid to high 11s
Old 07-18-2012, 08:47 PM
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Originally Posted by Chevy_King1500
does your coworker drive a mustang??
HAHA! This made me laugh out loud!

Actually, he's sort of a jeep guy.


Originally Posted by slammedsilvy
The 4L80E with a Transgo HD-2 shift kit would laugh at you, asking for more power.

The 10 bolt at that power will be fine, the factory G80 will let go sooner or later. Upgrade to a Tru Trac and you're fine.

I'm not too knowledgeable on front diff stuff as I've never owned a 4x4, but I see many members here clicking off 10 second, some even in the 9 second range launching in four wheel drive and the stuff seems to hold up.

Do it, prove him wrong.
All I'm planning on doing to the 4L80E is the hd2 shift kit. I was actually wondering if there's something else I should do before I put it in. I've also got a 40K trans-cooler.

I forgot to mention that I'll be running a Yank SC3000 stall as well.

My factory rearend is open. I bought the trutrac already and all I need to order are ring gear bolts. I've ready got bearings and shims. I shouldn't need to buy heavy duty axles or anything should I?

Basically I'm going to put it all together and see what happens. I don't think I'll break anything and if I do, I'll repair it as needed.


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