Re: Old Girl (aka Project Underhaulin)
 

Video of the first start up...

First Start Up - YouTube

Re: Old Girl (aka Project Underhaulin)
 

Video of a drive after the tune was done.

Tune Complete! - YouTube

Re: Old Girl (aka Project Underhaulin)
 

We upgraded to Dakota Digital gauges and took advantage of the ability to run them directly off the OBS II port.

Attachment 2022517

Couple shots of the engine compartment ...

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One of the issues we had was push rod length. You'd think the experts would know what their parts need but it took 3 sets to get it right. This is Connor swapping in the final set.

Attachment 2022521

We also swapped the power brake master/booster for a manual master cylinder.

Attachment 2022522

Re: Old Girl (aka Project Underhaulin)
 

Here are a couple shots of the exhaust, 3 inch mandrel bends throughout and 3" Magna Flow mufflers. The QA1 track bar setup makes it really tight after the axle so we decided to turn them down in front of the axle until we figure something better.

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Re: Old Girl (aka Project Underhaulin)
 

Just a pic I took for Instagram

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Connor installing a weather pack connector on the Vintage Air trinary switch.

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Next upgrade... 9 inch reared with a 3.00 gear will work much better with the gearing of the 8 speed automatic.

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Changing from a 20x8.5 squared to 20x8.5 front and 20x10 rear to get a little more meat in the rear. Going to have to put a little tub in the step side bed to make it work but it'll be worth the work.

Attachment 2022570

Re: Old Girl (aka Project Underhaulin)
 

Couple of shots of the trucks filling up before going to a local meet.

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Re: Old Girl (aka Project Underhaulin)
 

Nice. Has been a long road.

Re: Old Girl (aka Project Underhaulin)
 

:agree: Very nice ride!

Re: Old Girl (aka Project Underhaulin)
 

You fellas have done quite a nice job in your parts selection. The whole package looks like it could have been born that way. Seeing the rear cross member from Porterbuilt explains a lot. I bought one from CPP but it is going to need surgery to be able to work.

I’m doing a Gen V swap with an L83 ( the 6.2’s little brother) and a 6 speed automatic. I’m curious of your power output, did Texas Speed give you an idea of what the mods would produce?

I hope it gives you years of miles and smiles! :metal:

Re: Old Girl (aka Project Underhaulin)
 

Great upgrades! Nice work!

Re: Old Girl (aka Project Underhaulin)
 

It all looks good guys!

Ernie, where did you source the cable clamps for the parking brake cables in the picture? The brass piece with the set screws. I'm having trouble finding some that will fit in the connector.

Re: Old Girl (aka Project Underhaulin)
 

Nice updates!

Re: Old Girl (aka Project Underhaulin)
 

looks amazing. I have the stock 6.2 in my newer GMC Sierra and man does it run nice. I am sure it is a blast in that truck. These new gen 5 motors are a couple steps above the previous ones.
You all have done a great job on this one.
Dave

Re: Old Girl (aka Project Underhaulin)
 

I think they came in the cable kit from Wilwood, I'll have to check. I think we cut these down to fit.

Re: Old Girl (aka Project Underhaulin)
 

Looks awesome! I am very jealous of what's in the engine bay.

Re: Old Girl (aka Project Underhaulin)
 

Hey I'm curious about your steering setup, specifically what u-joint, shaft, etc. you're using. I'm swapping over to a redhead steering box, and the connection between my Ididit column and the box looks hacked together by the previous owner, and I'd like to do it better. Any suggestions?

Re: Old Girl (aka Project Underhaulin)
 

Our stuff is all stock. We may be able to help if we could what you have, do you have a build thread on here?

Re: Old Girl (aka Project Underhaulin)
 

I do, it's my "current build" in my signature. That said, I think I figured it out. I'm going from the Redhead box into a 13/16x36 ujoint, into a 1" DD collapsible tube, that turns into a 3/4"DD on the other end, into a 3/4"DDx1"DD coupler that will mount onto the Ididit steering column.

I found some videos about the right way to mount to the ididit column. They say not to put the 3/4"DD INTO the column, and that's exactly what the PO did. Instead, they say use a coupler that mounts over the column output, which is what I'll do next.

I appreciate the willingness to help. Your build inspired me to ensure my steering setup was better.

Re: Old Girl (aka Project Underhaulin)
 

I'm glad to hear you have it figured out! :metal:

Re: Old Girl (aka Project Underhaulin)
 

The latest mod is the 9 inch swap. We got it all mocked up this week end to check fit. I probably could have gone an inch shorter over all but I'm sure we'll be fine, may have to trim or roll the fender lip a bit. Next is powder coat and final reassembly. The 3.00 gear should really improve the drivability and turn it into a freeway flyer!

12 Bolt out!

Attachment 2026581

Quick Performance 9 inch, Yukon Nodular Case, Eaton Detroit Truetrac, 3.00 gear, and billet 1350 yoke :metal:

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9 inch in place

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Another angle

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Re: Old Girl (aka Project Underhaulin)
 

Tubs have been dissected and tacked together, and the bedsides have been cut out.

One of the tubs mocked and sitting in place

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Another angle of the tub after being tacked

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Crappy pic but those are 305/35-20 on a step side :metal:

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Tore it all apart and the housing is ready to go out for powder

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9 inch punkin' just because ;)

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Re: Old Girl (aka Project Underhaulin)
 

Those fat meats look amazing on there!:metal: How much narrower is the new 9 inch?

Re: Old Girl (aka Project Underhaulin)
 

I can't wait to see it in person!

Re: Old Girl (aka Project Underhaulin)
 

:agree:

Re: Old Girl (aka Project Underhaulin)
 

Awesome job on this truck. Beautiful

Re: Old Girl (aka Project Underhaulin)
 

Cool setup. This trucks getting better & better, but I gotta ask... a 3.00 gear with that 8 speed automatic and 28-1/2’ish tire seems a bit high. My calculations puts that beast at 87 mph in 8th turning 2000 rpm?

Re: Old Girl (aka Project Underhaulin)
 

Truck is beautiful. Good job.

Re: Old Girl (aka Project Underhaulin)
 

It’s about managing low gear. First gear is a 4.56 ratio, it’s really tough to leave a stop sign/light without giving it too much juice, the 3.00 will calm that down. Our ZL1 has a 2.77 read gear.

Re: Old Girl (aka Project Underhaulin)
 

^^^ Gotcha! I knew it had a crazy 1st gear.

Re: Old Girl (aka Project Underhaulin)
 

Man this truck just keeps getting better, awesome job guys.

Re: Old Girl (aka Project Underhaulin)
 

I just came back to poke around the board and realized I never posted any photos after we go the 9 inch swap and wheel tub install done. Here are some pics...

Quick Performance housing just back from powder coat.
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9 inch installed
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All done with the new 20x10 wheels and 305/35-20s
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Much better!
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Re: Old Girl (aka Project Underhaulin)
 

Great looking truck. So cool this site was a big part of its origin.

Re: Old Girl (aka Project Underhaulin)
 

Nice truck, I love how it sounds, I might have to try the QA1 suspension looks very trick.

Re: Old Girl (aka Project Underhaulin)
 

Nice, Hopefully we'll get to see it at CTC

Re: Old Girl (aka Project Underhaulin)
 

Looks great Buck. I'm building a 67 short fleet now. 6.0 / 4l80. I'll be doing a similar color combo on it. Your truck is definitely inspiring.

Re: Old Girl (aka Project Underhaulin)
 

Looking good!!

Re: Old Girl (aka Project Underhaulin)
 

Yes it does have a bit of provenance. (said in my best Harvard voice :lol:)
Thanks!
The wife and I will be there, the boy will be inscholl up in Nashville.

Hell yeah, I'll follow along!

Thanks Mike!

Pic of the tubs "installed"...
Attachment 2120308

Re: Old Girl (aka Project Underhaulin)
 

Is the boy at Vandi? My youngest daughter is in Grad school there.

Re: Old Girl (aka Project Underhaulin)
 

No, he's at Nashville Auto Diesel aka Lincoln Tech.

Re: Old Girl (aka Project Underhaulin)
 

This truck build was one of the reasons I joined the sight, watching the early days of the build inspired me . Good bunch of guys here.:metal:
You have taken it a step further and it's looking really good