Lining up new rockers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jrgunn5150 · 05-17-2016, 10:13 PM

Anyone have any tips? I'm have a really hard time getting my fender, outer rocker, and door all in agreement with one another.

lowrollin70gmc · 05-17-2016, 10:34 PM

Looks to me like your door needs to go up as well as the fender.

Align the door to the B pillar first (it looks slightly low) then raise rear of fender to match.

Fender/door gap can then be adjusted by moving the front of the fender up and down.

Jrgunn5150 · 05-17-2016, 10:42 PM

Quote:

Originally Posted by lowrollin70gmc

Looks to me like your door needs to go up as well as the fender.

Align the door to the B pillar first (it looks slightly low) then raise rear of fender to match.

Fender/door gap can then be adjusted by moving the front of the fender up and down.

Man, i hope so, I really don't want to cut the inner rocker out to get it to drop down more lol.

I also figured out today that the door had a bunch of bondo in it, so I ground it out so I can accurately see the body line there.

So. Line the door to the B, the rocker to the door, then the fender to both?

lowrollin70gmc · 05-20-2016, 09:51 PM

Pretty much that order.

I think of it as start adjusting where only one panel can move. Start as the b-pillar is "fixed" so door to b pillar (and rocker if it's still there) first.

Now your door is "fixed" so the fender is the only panel to move.

I typically do the door and fender before replacing the rocker and use them to line up a new rocker before welding it in. If your rocker is in, then you can try and persuade it if possible or just split the difference to make things fit decently.

Jrgunn5150 · 05-20-2016, 10:13 PM

Quote:

Originally Posted by lowrollin70gmc

Pretty much that order.

I think of it as start adjusting where only one panel can move. Start as the b-pillar is "fixed" so door to b pillar (and rocker if it's still there) first.

Now your door is "fixed" so the fender is the only panel to move.

I typically do the door and fender before replacing the rocker and use them to line up a new rocker before welding it in. If your rocker is in, then you can try and persuade it if possible or just split the difference to make things fit decently.

If I ever do this nonsense again, I'll definitely screw everything together and mount the door first lol.

You think if you buy a truck in Arkansas, it'll be ok...

rigon4 · 05-20-2016, 11:22 PM

I would start by checking the front cab mount as a NY guy I see alot of trucks like that and the mount is shot! Good luck

Jrgunn5150 · 05-23-2016, 06:57 PM

Quote:

Originally Posted by rigon4

I would start by checking the front cab mount as a NY guy I see alot of trucks like that and the mount is shot! Good luck

The mount is new, I guess I should have mentioned that lol. It's all new, so any combination of thing's could be causing my problems.

Right now I'm waiting on GM door pins so I can line the door up.

05-17-2016, 10:13 PM	#1
Jrgunn5150 Registered User Join Date: Nov 2015 Location: Ionia Michigan Posts: 336	Lining up new rockers Anyone have any tips? I'm have a really hard time getting my fender, outer rocker, and door all in agreement with one another. __________________ J.R. Link to Daryl's build, http://67-72chevytrucks.com/vboard/s...10#post8443010 Link to my Youtube channel with build info, https://www.youtube.com/thedrivewayengineer Last edited by Jrgunn5150; 05-17-2016 at 10:20 PM. Reason: Wrong picture.

05-17-2016, 10:34 PM	#2
lowrollin70gmc Too many projects Join Date: Mar 2004 Location: Fargo, ND land of the flat hills Posts: 1,147	Re: Lining up new rockers Looks to me like your door needs to go up as well as the fender. Align the door to the B pillar first (it looks slightly low) then raise rear of fender to match. Fender/door gap can then be adjusted by moving the front of the fender up and down. __________________ Andrew 84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck" 70 GMC C1500 LWB My first truck: shaved, bagged, and more: the lowrollin70gmc 68 K20 Suburban 12V Cummins/NV5600/NP205/D60/11.5AAM 3.73s "Dakota Cadillac" 63 Chevy II Nova Coupe 250 I6/T56/4.56s "Economy car" 53 Willys Wagon 350/NV4500/BW4401/HP D44/9inch “Winter Wagon” 30 Model A 16 Focus ST

05-20-2016, 09:51 PM	#4
lowrollin70gmc Too many projects Join Date: Mar 2004 Location: Fargo, ND land of the flat hills Posts: 1,147	Re: Lining up new rockers Pretty much that order. I think of it as start adjusting where only one panel can move. Start as the b-pillar is "fixed" so door to b pillar (and rocker if it's still there) first. Now your door is "fixed" so the fender is the only panel to move. I typically do the door and fender before replacing the rocker and use them to line up a new rocker before welding it in. If your rocker is in, then you can try and persuade it if possible or just split the difference to make things fit decently. __________________ Andrew 84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck" 70 GMC C1500 LWB My first truck: shaved, bagged, and more: the lowrollin70gmc 68 K20 Suburban 12V Cummins/NV5600/NP205/D60/11.5AAM 3.73s "Dakota Cadillac" 63 Chevy II Nova Coupe 250 I6/T56/4.56s "Economy car" 53 Willys Wagon 350/NV4500/BW4401/HP D44/9inch “Winter Wagon” 30 Model A 16 Focus ST

05-20-2016, 11:22 PM	#6
rigon4 Registered User Join Date: Mar 2006 Location: east syracuse ny Posts: 371	Re: Lining up new rockers I would start by checking the front cab mount as a NY guy I see alot of trucks like that and the mount is shot! Good luck __________________ 1981 K-5 Blazer 2wd 1985 C-10 Short step 1988 C-10 Suburban

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