66 GMC Long to Short LS Swap

[bigmoe]

Truck looks awesome. What are you doing to finish off back of the cab behind the seat?

[Duncan K]

Originally Posted by bigmoe

Truck looks awesome. What are you doing to finish off back of the cab behind the seat?

Still thinking about that one. Some sort of storage, built in and carpeted to match.

[Duncan K]

Well after a couple weeks messing around buying wheels and tires I found a combination that cleared the calipers and fit in the back. Ugly as hell, but it passed the inspection. Got it registered and plated.

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Swapped the wheels back over and went out for a cruise around the neighborhood. Steering is quite loose, will need to adjust the steering box. After about 10 mins it started over heating. I adjusted the kick on temp for the fan in HPTuners, will see how that does.

Took another walk down the ditch where I lost the hub cap, this time from the other side of the fence in the farmers field. Found it behind some long grass!!

[caseyjones]

Originally Posted by Duncan K

Took another walk down the ditch where I lost the hub cap, this time from the other side of the fence in the farmers field. Found it behind some long grass!!

I've actually been thinking about this thread, hoping that hubcap would show up. Excellent!

[SkinnyG]

Yay!

[350TacoZilla]

Man I know that feeling you had when you first saw that cap. I unfortunately also know the feeling of never finding one. I looked for hours once and couldn't find it and it was on a little back rd with not much traffic so I doubt someone else got it but I dunno what else it could be. I also had someone steal one of my hubcaps while I was in a store and started to steal another when someone else ran them off.

[cag]

Nice build, where did you get the inner fenders from??

[joesscamaro]

First time checking in in a while...so good to see your truck on the road and getting to enjoy it. It really turned out great! Job well done!

[Duncan K]

It's been a while so I thought I would post an update. I put about 500kms on the truck last year. It was great to finally get to drive it after over 7 years of restoration. I even managed to get it out to one of our local car shows. I painted an old Coleman cooler to put in the back which got almost more comments than the truck!



Found a few issues after getting some shake down kilometers in.

The power steering pump started leaking and had to be replaced

I had an intermitent no throttle response issue that left me on the side of the road a couple times. I replaced the throttle pedal sensor but the issue kept happening. Since then I replaced the throttle body, but haven't put many kms on it since so we will see what happens. Hoping I don't have to replace the TAC module.

Biggest issue has been a major driveline vibration at 95 km/hr and up. I rechecked the driveline angles and found that they had changed somehow since I initially set it up. The trans and diff were both at 4.1 degrees. When I checked it again the diff was at 5.7 degrees up, so I set the trans to match. The vibration is still there but now it doesn't start untill I hit 100km/hr. Not sure where to go with this? Do I need to get these closer to 3 degrees? I thought as long as they matched it would be fine.

While I patiently wait for spring to get here I finished up the interior. I made a panel to cover the back wall with a little storage tray at the bottom. I covered it with some speaker box carpet.



I sent the seat out to be recovered as well. This was the only part of the truck I didn't do myself. I strongly considered buying an industrial sewing machine and figuring it out but decided I just wanted it done so I left it to the professionals.Really happy with how it turned out.



I also started sanding a few runs out of the clear coat, and a few areas that had more orange peel than I was ok with. I thought I was done with sanding, but not so much. Cut and buff is a lot of work!

I spent some time dialing in the fueling, logging data and starting to learn HPTuners. I still have a long way to go with this

[SkinnyG]

Is the PCM, Throttle pedal, and TAC module all from the same donor? Sometimes it matters.

What is the operating angle at each universal joint? They don't want to be more than 3°. Is the vibration steady or cyclical?

Wheel imbalance likes to show up around around 100km/h - don't be afraid to re-check that. On my truck I have found a front wheel imbalance can feel like it's coming from the rear.

[rbruno68]

That back wall panel looks really good. I may need to do something like that in my future for my cab. It does a great job of hiding that back wall of the cab. Great job.

[Duncan K]

Originally Posted by SkinnyG

Is the PCM, Throttle pedal, and TAC module all from the same donor? Sometimes it matters.

What is the operating angle at each universal joint? They don't want to be more than 3°. Is the vibration steady or cyclical?

Wheel imbalance likes to show up around around 100km/h - don't be afraid to re-check that. On my truck I have found a front wheel imbalance can feel like it's coming from the rear.

The pcm, pedal and TAC were all from the same donor.

I don't know what the operating angles are on the u joints. I will have to measure them. The vibration is steady after about 95 km/hr.

I will definetly check the balance on all the wheels again