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one piece trunk floor installation-yes it will fit!
#1481646
08/08/13 07:16 PM
08/08/13 07:16 PM
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Joined: Feb 2006
Posts: 1,179
Canada
demon
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,179
Canada
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I see this asked over and over. Can a one piece B body trunk floor be installed with the 1/4's on? Why yes it can! I do it all the time.
Here I will show how:
Our subject is a 68 Road Runner but this method works for any 68-70 B body including Chargers, and 70-74 E bodies too.
First off, most B bodies that need a trunkfloor also need the rear crossmember and bumper reinforcement plates as well. The layers of steel swell up over time with rust.
On this car I used AMD panels. The trunkfloor fit perfect. The crossmember and bumpers plates fit very well too, althought the crossmember did lack the recess for the frame rail tabs on it's top flange, but that is easily remedied with a hammer in about 2 minutes.
I've been restoring Mopars for 25 years. Panel replacement and rust repair are tedious jobs that many people seem to dread, but I love it!
Hats off to AMD for making these excellent panels!
On 68-70 Chargers this can be done without removing the rear crossmember providing the rear valance is off.
Last edited by demon; 08/08/13 07:39 PM.
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#1481647
08/08/13 07:17 PM
08/08/13 07:17 PM
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Joined: Feb 2006
Posts: 1,179
Canada
demon
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,179
Canada
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#1481648
08/08/13 07:18 PM
08/08/13 07:18 PM
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Joined: Feb 2006
Posts: 1,179
Canada
demon
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,179
Canada
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#1481649
08/08/13 07:19 PM
08/08/13 07:19 PM
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Joined: Feb 2006
Posts: 1,179
Canada
demon
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,179
Canada
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#1481650
08/08/13 07:20 PM
08/08/13 07:20 PM
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Joined: Feb 2006
Posts: 1,179
Canada
demon
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,179
Canada
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With the rear crossmember removed, the trunk floor will slip in below the tail panel. the tailpanel is attached to the trunkfloor anyway, so only a few more spotwelds need to be seperated at either end to allow the trunk floor to pass through.
Don't forget to weld on the gas tank strap supports first!
Note that on this car, the trunk extensions were left in place too. The AMD trunk floor fit was perfect.
a tip about plug welding: I like to predrill my panel, then screw it down snug. I then remove a few screws, drill into the rail flanges slightly to ensure the weld gets ideal penetration for a strong plugweld. Practice will teach you how much to drill. If you just try to plug weld directly to the rail flange you may not get adequate penetration and have weak welds. This has the added benefit of creating nice nearly flush plug welds that need minimal grinding.
Have a look from below often while welding to see if the weld has created a nice little button that shows it has penetrated well.
Last edited by demon; 08/08/13 07:51 PM.
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#1481652
08/08/13 07:28 PM
08/08/13 07:28 PM
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Joined: Feb 2006
Posts: 1,179
Canada
demon
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super stock
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Joined: Feb 2006
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Canada
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and while the crossmember is off, I make up new flanges for the rail ends since they are almost always thin or non existant.
as a side note, look at the tailpanel on this car. No spot welds! this is a virgin car, yet the tailpanel was mig welded on to the trunkfloor. Under all the factory paint and seam sealer. Proof that the factory didn't always do thngs as planned. I suppose the spot welder was broken down or the guy went on coffee break! Not the first time I have seen this on old Mopars.
Last edited by demon; 08/08/13 07:34 PM.
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#1481659
08/11/13 09:34 PM
08/11/13 09:34 PM
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Joined: Oct 2003
Posts: 1,896
New England
Q5_Ed
top fuel
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top fuel
Joined: Oct 2003
Posts: 1,896
New England
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Great information. If you were going to replace rear frame rails as a unit, along with a new trunk pan how would you sequence it and support body? New full floor pan already in, wheel tubs are out, rear crossmember and tail panel is original and nice...rear cross member shown was not included and wrong for A12. rear foot pans to be replaced also. rest is nice.
See pic of donor section.
Last edited by Q5_Ed; 08/11/13 09:52 PM.
WANTED : ...A New Sponsor or Winning Lottery Ticket
69 A12 road runner ,Q5, post coupe, 4 speed, former Drag car restored to "Driver" condition in the early 90's, Showing some Patina. SS/E Track Record Holder 1980 10.40 @ 130mph
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Re: one piece trunk floor installation-yes it will fit!
[Re: Q5_Ed]
#1481660
08/18/13 10:32 PM
08/18/13 10:32 PM
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Joined: Oct 2003
Posts: 1,896
New England
Q5_Ed
top fuel
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top fuel
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New England
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anyone? or should I start a different post?
Thanks
Ed
Last edited by Q5_Ed; 08/18/13 10:34 PM.
WANTED : ...A New Sponsor or Winning Lottery Ticket
69 A12 road runner ,Q5, post coupe, 4 speed, former Drag car restored to "Driver" condition in the early 90's, Showing some Patina. SS/E Track Record Holder 1980 10.40 @ 130mph
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#1893058
08/16/15 05:44 PM
08/16/15 05:44 PM
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Joined: Aug 2003
Posts: 8,828
Houston, Tx
hemi68charger
master
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master
Joined: Aug 2003
Posts: 8,828
Houston, Tx
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Bringing back to life... I see the trunk pan can be installed via the rear crossover removed. BUT, if the crossover and quarters are worth staying put, but the rear filler "dutchman" panel needs to be removed, can the full trunk floor be installed? I have a Superbird I will be working on. The rear aero window plug needs to be removed and repaired along with the rear filler panel. While the rear filler panel's removed, will its absence allow the installation of a full one-piece trunk floor pan?
Thanks in advance..
TroyHouston Mopar Connection Club'69 Charger Daytona 440 - auto - 4.10 Dana (now with 426 hemi) '69 Charger 500 440 - 4speed - 3.54 Dana '70 Road Runner 383 - 4speed - a/c (now with 440)
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#2538428
08/19/18 03:08 AM
08/19/18 03:08 AM
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Joined: Feb 2006
Posts: 1,179
Canada
demon
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,179
Canada
|
I see this asked over and over. Can a one piece B body trunk floor be installed with the 1/4's on? Why yes it can! I do it all the time.
Here I will show how:
Our subject is a 68 Road Runner but this method works for any 68-70 B body including Chargers, and 70-74 E bodies too.
First off, most B bodies that need a trunkfloor also need the rear crossmember and bumper reinforcement plates as well. The layers of steel swell up over time with rust.
On this car I used AMD panels. The trunkfloor fit perfect. The crossmember and bumpers plates fit very well too, althought the crossmember did lack the recess for the frame rail tabs on it's top flange, but that is easily remedied with a hammer in about 2 minutes.
I've been restoring Mopars for 25 years. Panel replacement and rust repair are tedious jobs that many people seem to dread, but I love it!
Hats off to AMD for making these excellent panels!
On 68-70 Chargers this can be done without removing the rear crossmember providing the rear valance is off.
Bump.....
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Re: one piece trunk floor installation-yes it will fit!
[Re: demon]
#2549576
09/13/18 12:58 PM
09/13/18 12:58 PM
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Joined: Aug 2003
Posts: 8,828
Houston, Tx
hemi68charger
master
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master
Joined: Aug 2003
Posts: 8,828
Houston, Tx
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I rediscovered this article and WOW !!! Thanks a ton for the documentation. I have a recently acquired 1970 Road Runner that needs a complete floor... This will help tremendously toward me trying to do it myself... Ironic that my crossmember needs to be removed anyways.. Nice..
Last edited by hemi68charger; 09/13/18 12:59 PM.
TroyHouston Mopar Connection Club'69 Charger Daytona 440 - auto - 4.10 Dana (now with 426 hemi) '69 Charger 500 440 - 4speed - 3.54 Dana '70 Road Runner 383 - 4speed - a/c (now with 440)
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