Spec Weight vs. Actual Comparison
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 763
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From: Loveland Colo
Spec Weight vs. Actual Comparison
Weighed my car on a landscaping yard scale today, figured I'd share my info......
Actual weight: F 1770(48.8%) R 1860(51.2%) Total 3630#
minus me (180#) 3450#
Spec weight: F 1677(49.2%) R 1730(50.8%) Total 3407#
plus my options (191#) 3598#
Both weights are with full tank of gas. F/R distribution in "Actual" includes me in car, in "Spec" it does not include any options added to the base weight. Therefore, F/R distribution is not entirely accurate for comparison, but gives an idea.
My car is a '73 L48 coupe, TH400, PW,PS, PB, A/C. I have installed aluminum heads & manifold, tubular headers, mini-starter, fiberglas rear spring, and removed the A/C compressor & condenser and smog pump/stuff. OEM rally wheels.
I never thought to weigh it when it was all stock, so I have no "Actual OEM" comparison. Sorry.
That's all. Just thought someone may be interested.
John
PS. Think I should fill the vacuum reservoir full of lead to get the F/R % more balanced?
Actual weight: F 1770(48.8%) R 1860(51.2%) Total 3630#
minus me (180#) 3450#
Spec weight: F 1677(49.2%) R 1730(50.8%) Total 3407#
plus my options (191#) 3598#
Both weights are with full tank of gas. F/R distribution in "Actual" includes me in car, in "Spec" it does not include any options added to the base weight. Therefore, F/R distribution is not entirely accurate for comparison, but gives an idea.
My car is a '73 L48 coupe, TH400, PW,PS, PB, A/C. I have installed aluminum heads & manifold, tubular headers, mini-starter, fiberglas rear spring, and removed the A/C compressor & condenser and smog pump/stuff. OEM rally wheels.
I never thought to weigh it when it was all stock, so I have no "Actual OEM" comparison. Sorry.
That's all. Just thought someone may be interested.
John
PS. Think I should fill the vacuum reservoir full of lead to get the F/R % more balanced?
Last edited by JPhil; Oct 3, 2006 at 06:57 PM.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 763
Likes: 0
From: Loveland Colo
I figure 15 gallons in the tank. I was actually at about 5/8 tank showing on the guage so I figured roughly 6 gallons or 40 pounds and added that to my rear weight & total so as to match the spec curb weight which calls out a full tank.
Here's where I got the spec weight from:
http://www.corvetteforum.net/c3/vette73/S_WEIGHT.htm
Here's where I got the spec weight from:
http://www.corvetteforum.net/c3/vette73/S_WEIGHT.htm
Last edited by JPhil; Oct 3, 2006 at 07:07 PM.
Race Director
Joined: Feb 2005
Posts: 16,100
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I weighed both on certified scales a few months ago:
78 SA 4 speed L-82 loaded with options,fuel = 3580#
69 502 coupe 4 speed no A/C,full tank = 3380#
What I find interesting is the engines...not much difference between L-82(fully dressed) and the 502(heavier) but lighter than a cast iron head 427...
Rich
78 SA 4 speed L-82 loaded with options,fuel = 3580#
69 502 coupe 4 speed no A/C,full tank = 3380#
What I find interesting is the engines...not much difference between L-82(fully dressed) and the 502(heavier) but lighter than a cast iron head 427...
Rich
