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Progress update #3258318
09/17/24 08:32 AM
09/17/24 08:32 AM
Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Brad_Haak Offline OP
pro stock
Brad_Haak  Offline OP
pro stock

Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Concern for leaf spring sag was case of torsion bar adjustments being way different from side to side. Still not where it should be, but more on that later.

Big PITA getting the hood back on cuz:
1. for fiberglass, it's freakin' heavy
2. since all the front sheet metal had to come off to repair the frame and it went back on w/ some adjustments, stuff didn't line up the same as when pulled apart
3. the adjustment process getting the hinges positioned properly was a bit of an exercise in frustration

I was getting ready to say "Eff it!" and go back to a lift-off hood until we finally got things close enough on Sunday afternoon to keep it. But I could save some weight if I really had to...

Screenshot 2024-09-17 at 9.20.48 AM.pngScreenshot 2024-09-17 at 9.21.35 AM.pngScreenshot 2024-09-17 at 9.22.08 AM.png

2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Progress update [Re: Brad_Haak] #3258321
09/17/24 08:39 AM
09/17/24 08:39 AM
Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Brad_Haak Offline OP
pro stock
Brad_Haak  Offline OP
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Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Front end extension travel from static ride height is too limited: needs to be 5+" and right now it's a tad over 4". Probably gonna be a combination of lowering torsion bar adjustments and trimming the UCA bumpers to free up some additional travel.

I ran some really short UCA bumpers previously, but they were virtually flat and made a noticeable "Thunk!" sound when the front suspension topped out coming off the line. I was hoping to use a bumper with a bit more "give" in the initial contact this time, but they're too tall as is. sawzall

The overall car height is about where it was before, but I switched to shorter & skinnier front tires. Edit: added pic of how car sat back in 2009 w/ the taller tires for reference.

Screenshot 2024-09-17 at 9.22.43 AM.pngScreenshot 2024-09-17 at 9.23.17 AM.pngMoPig_RP.JPG
Last edited by Brad_Haak; 09/17/24 08:42 AM.

2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Progress update [Re: Brad_Haak] #3258322
09/17/24 08:54 AM
09/17/24 08:54 AM
Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Brad_Haak Offline OP
pro stock
Brad_Haak  Offline OP
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Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Can't hide the rust, scratches or dents now that I washed it.

Vinyl top got some TLC while I was at it.

The rear license plate mounts differently that before cuz we removed the '72-74 bracket and switched to the '70-71 approach. Unfortunately, now the license plate and the master cut-off switch are trying to occupy the same space, so I decided to trim off some "non-essential" section of the plate.

Need to contact a shop about 20 miles from home about getting the front end aligned.

PS - Car looks way better in pics than in person... it's definitely a 20-footer, but it's my 20-footer

Screenshot 2024-09-17 at 9.23.53 AM.pngScreenshot 2024-09-17 at 9.46.57 AM.png20240916_165530 copy.jpg

2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Progress update [Re: Brad_Haak] #3258324
09/17/24 09:00 AM
09/17/24 09:00 AM
Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Brad_Haak Offline OP
pro stock
Brad_Haak  Offline OP
pro stock

Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Can't find the prop rod I made years ago, so I grabbed a kid's plastic bat I found stuffed in the basement and re-purposed it grin

Screenshot 2024-09-17 at 9.24.55 AM.png

2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Progress update [Re: Brad_Haak] #3258325
09/17/24 09:03 AM
09/17/24 09:03 AM
Joined: Jan 2003
Posts: 13,599
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,599
Marion, South Carolina [><]
Looks good Brad! My car is probably a 30 footer, lol. Looks better in pics than in person, but if it was really nice I probably wouldn't have as much fun w/ it.
The taller front tires help a lot w/ front travel. I use 28" tall fronts so I could lower the front end down for more travel while maintaining the same ride height it had w/ shorter tires.
FWIW...I ran for years w/ no front UCA bump stops at all. Trying to get all the travel I could.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 4 speed, Dana 60
'71 Demon 340, no drivetrain, on blocks behind the barn
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Progress update [Re: Brad_Haak] #3258338
09/17/24 10:33 AM
09/17/24 10:33 AM
Joined: Aug 2008
Posts: 4,183
Mo.
racerx Offline
master
racerx  Offline
master

Joined: Aug 2008
Posts: 4,183
Mo.
t's definitely a 20-footer, but it's my 20-footer




Every time i hear this it makes me think of a neighbor that has a high dollar fox body ,that tells me that i have a 20'er laugh2

Re: Progress update [Re: racerx] #3258356
09/17/24 11:14 AM
09/17/24 11:14 AM
Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Brad_Haak Offline OP
pro stock
Brad_Haak  Offline OP
pro stock

Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Just waxed it! laugh2

Screen Shot 2022-10-25 at 1.01.31 AM.png

2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Progress update [Re: racerx] #3258368
09/17/24 11:54 AM
09/17/24 11:54 AM
Joined: Dec 2013
Posts: 4,871
Wichita
G
GY3 Offline
master
GY3  Offline
master
G

Joined: Dec 2013
Posts: 4,871
Wichita
Originally Posted by racerx
t's definitely a 20-footer, but it's my 20-footer




Every time i hear this it makes me think of a neighbor that has a high dollar fox body ,that tells me that i have a 20'er laugh2


Fox body. LMAO!

I had a '93 Cobra. Really nothing special. One just like the millions of others out there.


'63 Dodge 330

11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.

9.92 @ 135mph with a 350 shot of nitrous and 93 octane pump. 1.43 60 ft. 3,750 lbs.

Re: Progress update [Re: Brad_Haak] #3258380
09/17/24 12:36 PM
09/17/24 12:36 PM
Joined: Jan 2003
Posts: 10,168
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
I Live Here
gregsdart  Offline
I Live Here

Joined: Jan 2003
Posts: 10,168
Frostbitefalls MN (Rocky&Bullw...
Brad, A lot of guys would give an important part of thier anatomy have this car! Enjoy!


8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
Re: Progress update [Re: Brad_Haak] #3258382
09/17/24 12:41 PM
09/17/24 12:41 PM
Joined: Aug 2008
Posts: 4,183
Mo.
racerx Offline
master
racerx  Offline
master

Joined: Aug 2008
Posts: 4,183
Mo.
Originally Posted by Brad_Haak
Just waxed it! laugh2

work laugh2

Re: Progress update [Re: racerx] #3258394
09/17/24 01:14 PM
09/17/24 01:14 PM
Joined: Jan 2003
Posts: 8,114
Tulsa OK
Bad340fish Offline
master
Bad340fish  Offline
master

Joined: Jan 2003
Posts: 8,114
Tulsa OK
I am member of the 20ft club as well lol. Paint doesn't make anything more fun.


68 Barracuda Formula S 340
Re: Progress update [Re: Bad340fish] #3258399
09/17/24 01:23 PM
09/17/24 01:23 PM
Joined: Aug 2003
Posts: 4,778
On the parachute mount
N
n20mstr Offline
master
n20mstr  Offline
master
N

Joined: Aug 2003
Posts: 4,778
On the parachute mount
LOOKING GOOD keep the momentum going up


....BAD A$$ STREET CAR.....
Re: Progress update [Re: n20mstr] #3258402
09/17/24 01:42 PM
09/17/24 01:42 PM
Joined: Mar 2006
Posts: 10,106
MI, usa
dvw Offline
I Live Here
dvw  Offline
I Live Here

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Posts: 10,106
MI, usa
Best way to increase travel is 1" longer upper ball joints. Afco, Speedway and others have them. removiving the upper bump stops gives you maybe 1/2" at most.
Doug

Re: Progress update [Re: Brad_Haak] #3258407
09/17/24 02:23 PM
09/17/24 02:23 PM
Joined: Jan 2003
Posts: 10,125
MN
J
JERICOGTX Offline
I Live Here
JERICOGTX  Offline
I Live Here
J

Joined: Jan 2003
Posts: 10,125
MN
Originally Posted by Brad_Haak
Just waxed it! laugh2


I need to know what kind of wax you used. Impressive stuff! laugh2


69 GTX 68 Road Runner
Re: Progress update [Re: JERICOGTX] #3258416
09/17/24 03:16 PM
09/17/24 03:16 PM
Joined: Jan 2003
Posts: 18,065
S.E. Michigan
ZIPPY Offline
I Live Here
ZIPPY  Offline
I Live Here

Joined: Jan 2003
Posts: 18,065
S.E. Michigan
Looks good from over here. At least it's back together in mostly one piece!


Rich H.

Esse Quam Videri




Re: Progress update [Re: dvw] #3258521
09/18/24 07:14 AM
09/18/24 07:14 AM
Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Brad_Haak Offline OP
pro stock
Brad_Haak  Offline OP
pro stock

Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Originally Posted by dvw
Best way to increase travel is 1" longer upper ball joints. Afco, Speedway and others have them. removiving the upper bump stops gives you maybe 1/2" at most.
Doug

I've been able to get sufficient travel with ride height and control arm bumper height. Swapped to QA1 tubular UCAs as part of the rebuild, but the upper ball joints are still stock dimension.

The other thing I always keep in mind is it's possible to free up more travel than certain dampers can support. My QA1 R-series are shorter than my old Koni SPA-1 and could become the defacto travel limiters if I don't verify they're not topped out before the bumpers come into play.


2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Progress update [Re: Brad_Haak] #3258528
09/18/24 07:44 AM
09/18/24 07:44 AM
Joined: Jan 2003
Posts: 13,599
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,599
Marion, South Carolina [><]
Shock extensions from Mr. Gasket solve the short shock issue.
https://shop.advanceautoparts.com/p...nRMY8q6e2saAtAhEALw_wcB&gclsrc=aw.ds


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 4 speed, Dana 60
'71 Demon 340, no drivetrain, on blocks behind the barn
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Progress update [Re: an8sec70cuda] #3258538
09/18/24 08:42 AM
09/18/24 08:42 AM
Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
Brad_Haak Offline OP
pro stock
Brad_Haak  Offline OP
pro stock

Joined: Dec 2021
Posts: 1,436
Loudoun County, VA
I got a set of those on a shelf getting dusty; never been outta the bag.

Car gets towed this afternoon to the shop that's gonna do the front-end alignment. After that's done I should be able to start driving it around while working on other things it still needs done. Sitting for 15 years didn't do it any favors...


2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Progress update [Re: Brad_Haak] #3258547
09/18/24 09:23 AM
09/18/24 09:23 AM
Joined: Jan 2003
Posts: 4,295
Shelby Twp. Mi
HardcoreB Offline
master
HardcoreB  Offline
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Joined: Jan 2003
Posts: 4,295
Shelby Twp. Mi
Looking good get it out and have some fun! report back with some new bests.

Re: Progress update [Re: HardcoreB] #3258612
09/18/24 12:57 PM
09/18/24 12:57 PM
Joined: Nov 2004
Posts: 16,705
On the run…
BloFish Offline
I Live Here
BloFish  Offline
I Live Here

Joined: Nov 2004
Posts: 16,705
On the run…
iagree


It really doesn't matter whether you win or lose…
as long as you look good doing it!

‘65 A100
‘69 ‘Cuda
‘73 Vega GT
‘06 Mega Cab
‘14 Mercedes SLK
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