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Old 11-23-2018, 08:41 PM   #101
Bird dog
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Re: '72 gmc

We put in a couple hours on the GMC today. Got the cowl cover (with stainless trash screens) and side mirrors installed and a couple other minor things done. Still hasn't seen the light of day yet, now Im waiting for a dry day to test the clutch and get to alignment shop.

The clutch doesn't totally disengage and the pedal is to the floor. I have a .70 bore clutch master and Im thinking I may have to jump up to a 7/8" bore to get more fluid moving.
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Old 11-24-2018, 02:06 PM   #102
CRUSH2.0
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Re: '72 gmc

The truck is unbelievable! Well done! You keeping it or selling it??
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Old 11-24-2018, 09:46 PM   #103
Bird dog
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Re: '72 gmc

Quote:
Originally Posted by CRUSH2.0 View Post
The truck is unbelievable! Well done! You keeping it or selling it??
I gotta get a mile or two under her belt before I decide. I've had a ton of fun building this, I would like to do another......
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Old 11-24-2018, 10:06 PM   #104
CRUSH2.0
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Quote:
Originally Posted by Bird dog View Post
I gotta get a mile or two under her belt before I decide. I've had a ton of fun building this, I would like to do another......
Keep me posted!
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Old 12-16-2018, 10:31 PM   #105
Bird dog
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Re: '72 gmc



Its home and complete, except for installing the door panels (want to run a few weeks of testing the nu-relics power windows before I install) and alignment. Raining here so its in the shop waiting until the Saturday alignment appointment.

Had a couple issues during the initial start-up.
1. LS3 ran crappy. Low idle and couldn't keep her going. Thought I may have to get it tuned. Made an appointment and when the tech asked for the part number of my ECM (computer) and I looked up my order 18 months ago, I found out I was shipped the ECM for the 430 hp ECM (mine is the hot cam 480hp). Got the replacement in and she runs perfect!

2. Was still having clutch issues with the T56. Modern Driveline sent me a .70 diameter master cylinder that wasn't giving the clutch enough movement. Ordered a .75" diameter, same issue but better. The third times a charm, ordered the 7/8" wilwood and clutch works perfect. Lesson learned. This was my first clutch and tranny install so I was worried I missed something.

Great oil pressure, Dakota HDX gauges are awesome, fans kicked on at 195 degrees, couldn't be happier at this point.

I only have about 3/4 mile on her at this point, but I am impressed at the power. Spun the tires in 3rd gear when I was getting merged into traffic to go around the block.

This thing sounds awesome and is going to be fun!!
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Old 12-16-2018, 10:36 PM   #106
CRUSH2.0
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Re: '72 gmc

Beauty!!
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Old 12-17-2018, 10:33 AM   #107
rustytruck50
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Location: Papillion, Ne
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Re: '72 gmc

I have been following since you started and noticed today is exactly 1 year since your first post! Amazing turn around in a pretty short time!
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'05 RCSB Sierra 2WD
'71 Sierra 2WD Longbed
'98 Silverado K1500 Xcab...sold
'72 Highlander"Raymond"...sold
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