Author Topic: 84 c10 fender wont line up  (Read 1344 times)

Offline 88rxna

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84 c10 fender wont line up
« on: April 04, 2022, 07:58:24 AM »
im having trouble with the fender not lining up. i installed new polyurethane bushings for the cab and core support and the core support is way too high. the fender needs raised way more than possible? I have shims under the bolt located under the hood and i can not get it to the proper location. in fact, im pretty sure it would be too high going by the body line located in the center of the truck. i thought maybe the core support bushings were wrong and too tall perhaps?

i was wondering if anyone had an idea what's going on?
1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
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4l80E

Offline zieg85

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Re: 84 c10 fender wont line up
« Reply #1 on: April 04, 2022, 04:21:27 PM »
pictures would help of the overall problem, what your frame looks like and all
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline 88rxna

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Re: 84 c10 fender wont line up
« Reply #2 on: April 04, 2022, 06:06:01 PM »
I hope the video shows what I'm having issues with.

https://youtu.be/yHa1KlrMwE8
1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E

Offline zieg85

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Re: 84 c10 fender wont line up
« Reply #3 on: April 04, 2022, 06:53:20 PM »
Sure looks like the wrong core support bushing unless the cab mounts are wrong
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline zieg85

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Re: 84 c10 fender wont line up
« Reply #4 on: April 04, 2022, 07:01:23 PM »
from the core support mount to the core support measures 1 7/16".  Granted mine are original but yours look a whole lot taller
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline 88rxna

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Re: 84 c10 fender wont line up
« Reply #5 on: April 04, 2022, 08:51:11 PM »
im wondering if thats my issue. i measure 1 inch for the cab mounts (exactly like your pic) and 1 1/4 for the core support mount.
1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E

Offline VileZambonie

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Re: 84 c10 fender wont line up
« Reply #6 on: April 05, 2022, 06:34:43 PM »
The bushings are different for 2 and 4 wd as well as specific to the year you need. Are you sure it's the original cab? Loosen all of the body mounts and make sure your cab supports are in good shape. You may need to shim them, but get the body lines right and tight and then shim the body mounts as needed.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 88rxna

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Re: 84 c10 fender wont line up
« Reply #7 on: April 06, 2022, 06:19:19 AM »
I am not sure if the cabs a 2 or 4wd. I'm pretty sure I ordered the correct year and such for the bushings. Last night I loosened the cab mount and it measured the same height as the core support mount, right around 1 1/2. I torqued them to 55 foot pounds and they squished to about 1 inch.  Even with the cab moints loose I still need to raise the cab up. That's a good idea and I didn't think of adding washers to the cab mounts. Seems to be my solution.
1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E

Offline 88rxna

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Re: 84 c10 fender wont line up
« Reply #8 on: April 06, 2022, 12:15:31 PM »
I was finally able to track found the bushings.

Energy Suspension 3-4116G 81-87 CHEVY TRK CAB https://smile.amazon.com/dp/B003TPNDV6/ref=cm_sw_r_apan_i_0HV48Z0QZF5YEACWKM1P?_encoding=UTF8&psc=1
1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E

Offline Mike81K10

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Re: 84 c10 fender wont line up
« Reply #9 on: April 06, 2022, 08:56:15 PM »
Hard to tell but it appears the bushings are correct. Here is a picture of the bushings I installed in my thread a while back. I cleaned and reused my metal pieces with my bushings. My bushings where purchased a different place than yours. I did use new bolts, mine was too rusted out. I added on an after install of what it looked like.

Looked at your installed bushing again and did not notice a metal top cap like mine, one piece of the rubber goes on top and one under. Did you get them on correctly?

I have a time with my fender and the large bolts on the inside of the wheel well that goes toward the firewall had the stay very loose till last.
« Last Edit: April 06, 2022, 09:11:42 PM by Mike81K10 »
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Offline 88rxna

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Re: 84 c10 fender wont line up
« Reply #10 on: April 06, 2022, 09:53:46 PM »
Shimming the cab did the trick. Guess I had an old guy moment...
The 2 large washers were just a tad over .350 thick and that did the trick. I apologize for not posting pics. I know it makes life on here 1000 easier. You all somehow managed to still help me!

Thanks all for your patience and time helping on an easy fix. I've never done it before and when someone mentioned shimming the cab I felt like a dummy..lol such an easy solution.
1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E