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04 4.8L 5MT SC build.


SIXJAK

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yes rcsb first and second gear will feel soooo long now ha. but you will see exactly what i mean once you get it all together.

 

Thanks for the info. It's a learning process and an expensive one too. Unfortunately I don't have the time or the patience anymore to turn the wrench and delve into the more complicated work.

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Found my driveshaft. 90.00 @ the salvage yard. 4L60e. Gonna have to pretty that thing up a bit. Now I need to get a shallow 31 spline yoke. Will be talking to the folks at Summit here shortly. me7agyje.jpg

 

And no that is not me. That's a salvage yard employee practicing his Sears catalog modeling skillz.

 

 

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Ordered a new speed sensor along with a D70 HD 31 spline yoke today. Found out the salvage driveshaft is about an inch too long. I'm going to return it and just have a shop in Springfield shorten mine about 6". That should give me the correct amount of play I need. Just should have done this first. Oh well live and learn.

Getting close to being up and running.

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That's a huge shifter! You might want to look into an f body shifter and make about a 3" extension for it. That's what I ended up doing after about 3 different ones. But I'm 6 2" maby it will be more

Comfortable for you.... Good luck the swap is trial and error the whole way threw

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That's a huge shifter! You might want to look into an f body shifter and make about a 3" extension for it. That's what I ended up doing after about 3 different ones. But I'm 6 2" maby it will be more

Comfortable for you.... Good luck the swap is trial and error the whole way threw

 

Tell me about it. Got the 5" shortened OEM drive shaft back yesterday, got it in by 5pm.

aza8yta3.jpgju3y3y8u.jpgdune9uta.jpg

5ega5ysu.jpg

 

As a side note, I hate the rain.

 

We got all of the fluids in, the speed sensor and reverse light sensor hooked up (the reverse lockout pigtail is on its way from Summit) and took it out for a spin and my rear end cratered. WTF? I just had a posi and 3.73 gears installed back in June. I don't even think I've put 2k miles on my truck since.

 

This really sucks. I almost feel at this point like my build is cursed. My truck has been down for 2.5 months now. Thankfully I have several other cars so I'm not without transportation but I need to haul some crap to the dump, take my mower in for service.

 

They're going to warranty the parts. I'll get it fixed and just go from there. I don't think this rear end is going to be a long term solution. Any thots or suggestions.

Edited by SIXJAK (see edit history)
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  • 1 month later...
  • 2 weeks later...

Non yet. And since I'm currently in Maui vacationing, I'm not caring right now lol. I'll figure it out when I get home next Thursday. If they don't warranty it, I'm gonna go a bit deeper than 3.73. Gotta save some money first.

Edited by SIXJAK (see edit history)
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  • 2 months later...

Quick update. Yukon did warranty my posi rearend. Decided to go with 4.10 gears so the rearend is getting rebuilt and re shimmed as I write this.

 

Went with a new 12" Corvette flywheel and Centerforce clutch pressure plate set up that gives more surface area. The previous setup was wrong in every conceivable way. Too small, too thin it never had a chance. At any rate the truck should be good to go here very soon. It should be a fun little sub 400RWHP truck.

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hute4aga.jpg

Fixed my hillbilly shifter so it doesn't bang into my center console. We heated it and bent it towards the console 3" and towards the driver 3". That hurst ball falls readily to hand now. Perfect. uresere4.jpgqu9ezape.jpg

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It's a big shifter but it fits well. No reaching for gears. I know the throw would be considerably shorter with a smaller shifter but it ain't bad.

 

The rearend is now shimmed correctly and it feels like a brand new truck. 65mph # 1500rpm in 6th. With the Corsa catback, you barely hear the exhaust on the highway just cruising.

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