70 Roadrunner weight
#2194185
11/10/16 07:56 PM
11/10/16 07:56 PM
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Joined: Oct 2006
Posts: 4,165 Florida
cataclysm80
OP
master
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OP
master
Joined: Oct 2006
Posts: 4,165
Florida
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Hello everyone, I'm currently mid restoration on a 70 Roadrunner, 383-4 barrel, 4 speed manual trans, air grabber hood. I'm trying to select which bars & springs to purchase, but I don't know how much the car weighs. I'm looking for a Total weight for the whole car, and also just a Front end weight (only the front tires on the weigh scale), so that I have some idea of what the weight balance is like on these cars. This will be a fun street driven car, no drag racing or autocrossing, but I'd like it to handle well. Mainly I'm looking for car weights so that I can make my own decisions, but I'd also be interested in hearing what torsion bar sizes you guys recommend for handling on a 1968-1970 B body. Anything to at least get me in the right ballpark. Thanks! Tav
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Re: 70 Roadrunner weight
[Re: cataclysm80]
#2194482
11/11/16 01:18 AM
11/11/16 01:18 AM
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Joined: Feb 2011
Posts: 4,302 Nebraska
72Swinger
master
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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Im a fan of a 300lb/in bar minimum. Rear spring I would go with XHD's.
Mopar to the bone!!!
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Re: 70 Roadrunner weight
[Re: cataclysm80]
#2221948
12/28/16 12:38 AM
12/28/16 12:38 AM
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Joined: Jan 2003
Posts: 6,531 Jacksonville, FL
Chris2581
master
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master
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
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FWIW...my 1970 Road Runner coupe weighs in at 3560#'s 383 4-speed car with nothing else on it.
Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.
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Re: 70 Roadrunner weight
[Re: TC@HP2]
#2295172
04/27/17 06:32 PM
04/27/17 06:32 PM
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Joined: Oct 2006
Posts: 4,165 Florida
cataclysm80
OP
master
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OP
master
Joined: Oct 2006
Posts: 4,165
Florida
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160# XHD leafs with no sway bar Where do you find 160# leaf springs? Espo said the biggest they had was 130#.
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Re: 70 Roadrunner weight
[Re: cataclysm80]
#2295342
04/27/17 11:17 PM
04/27/17 11:17 PM
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Joined: Jan 2003
Posts: 27,467 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,467
So Cal
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I put Mickey's 70 Hemi 4 spd Roadrunner post on 4 corner digital race scales recently.
I'll post results...
Last edited by autoxcuda; 04/27/17 11:57 PM.
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Re: 70 Roadrunner weight
[Re: autoxcuda]
#2350593
08/08/17 11:06 AM
08/08/17 11:06 AM
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Joined: Jun 2015
Posts: 313 Northeast Indiana
73DAD
enthusiast
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enthusiast
Joined: Jun 2015
Posts: 313
Northeast Indiana
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Mickey's 70 Hemi 4spd Road Runner post/coupe. It has a MP aluminum hemi six pack manifold and holley carbs, MP cast iron block. Cast Iron 4 spd, Dana 60. Stock front disk. Bench seat. Gas tank is not full, but forgot how much gas he had.
Don't know about?: -rear brakes -cast iron or aluminum heads -cast iron or aluminum bellhousing
The percentage is set on Rear. So the first reading w/o driver is 45.7% rear weight (54.3% front). Second reading is w/driver at 45.9% rear weight (54.1% front).
It's the weights on screen with the arrows pointing on them divided by the non arrow weights.
w/o driver: LF: 1079 RF: 1005 LR: 848 RR: 909 F/R%: 54.3/45.7% Total: 3841 lbs
w/driver: LF: 1155 RF: 1022 LR: 912 RR: 933 F/R%: 54.1/45.9% Total: 4022 lbs That's consistent with 'Hemirunner's weight from FBBO. I believe his '70 is 4050 lbs with a megablock based hemi with aluminum heads. My '70 also has a megablock based hemi (iron heads) but is completely stripped of non-essentials inside and out. Basically a shell with only the parts to be road/dragstrip legal. It weighs 3680 with me in it. 3500 without.
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