Difference in Moog front springs?
Thread Starter
Burning Brakes
Joined: Jul 2014
Posts: 831
Likes: 54
From: Arlington TX
Difference in Moog front springs?
For a ‘77 they have two springs listed. The only distinction is with or without a/c. Is this just for a weight difference? I can’t imagine the entire a/c system weight more than 60/70 lbs.
if if this is the case, since I’ve switched to aluminum radiator, heads and intake manifold, and still have a/c would this be about the same variance in weight reduction?
Suggestions?
-Stroke
if if this is the case, since I’ve switched to aluminum radiator, heads and intake manifold, and still have a/c would this be about the same variance in weight reduction?
Suggestions?
-Stroke
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
For a ‘77 they have two springs listed. The only distinction is with or without a/c. Is this just for a weight difference? I can’t imagine the entire a/c system weight more than 60/70 lbs.
if if this is the case, since I’ve switched to aluminum radiator, heads and intake manifold, and still have a/c would this be about the same variance in weight reduction? I've probably complicated things for you since there were actually more different springs originally than just the two choices. This is the reason that some cars ride great with one spring and then you put it in another and it will appear high. (or low)..
Suggestions?
-Stroke
if if this is the case, since I’ve switched to aluminum radiator, heads and intake manifold, and still have a/c would this be about the same variance in weight reduction? I've probably complicated things for you since there were actually more different springs originally than just the two choices. This is the reason that some cars ride great with one spring and then you put it in another and it will appear high. (or low)..
Suggestions?
-Stroke
AC only added 32.50 lbs to the front springs, but I doubt the radiator removed the difference difference. I'd be worried the ride would be too soft with the non a/c springs. I'm no expert on what you are doing so maybe others will offer their opinion.
Willcox
Below I've posted the original 1976-1978 spring chart...
Last edited by Willcox Corvette; Dec 11, 2017 at 09:44 PM.
Thread Starter
Burning Brakes
Joined: Jul 2014
Posts: 831
Likes: 54
From: Arlington TX
Not in my mind... I'd still run the AC springs.
AC only added 32.50 lbs to the front springs, but I doubt the radiator removed the difference difference. I'd be worried the ride would be too soft with the non a/c springs. I'm no expert on what you are doing so maybe others will offer their opinio.
Willcox
Below I've posted the original 1976-1978 spring chart...
AC only added 32.50 lbs to the front springs, but I doubt the radiator removed the difference difference. I'd be worried the ride would be too soft with the non a/c springs. I'm no expert on what you are doing so maybe others will offer their opinio.
Willcox
Below I've posted the original 1976-1978 spring chart...
However, to what spring set does this chart reference? Moog only had two listed. This has three. Are these for the factory dual rate springs?
Much thanks,
-Stroke
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Thanks, Willcox man! 32.5lbs for a/c is much less than I had thought it would be. So considering my current weight reduction I do think I’m in the middle row spring of that chart at least.
However, to what spring set does this chart reference? Moog only had two listed. This has three. Are these for the factory dual rate springs?
Much thanks,
-Stroke
However, to what spring set does this chart reference? Moog only had two listed. This has three. Are these for the factory dual rate springs?
Much thanks,
-Stroke
Willcox.
Race Director
Joined: May 2006
Posts: 18,734
Likes: 2,582
It states Sprung Weight which is not the vehicle weight.
The mass of the body and other components supported by the suspension is the sprung mass.) Unsprung mass includes the mass of components such as the wheel axles, wheel bearings, wheel hubs, tires, and a portion of the weight of driveshafts, springs, shock absorbers, and suspension links
The mass of the body and other components supported by the suspension is the sprung mass.) Unsprung mass includes the mass of components such as the wheel axles, wheel bearings, wheel hubs, tires, and a portion of the weight of driveshafts, springs, shock absorbers, and suspension links
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Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
It states Sprung Weight which is not the vehicle weight.
The mass of the body and other components supported by the suspension is the sprung mass.) Unsprung mass includes the mass of components such as the wheel axles, wheel bearings, wheel hubs, tires, and a portion of the weight of driveshafts, springs, shock absorbers, and suspension links
The mass of the body and other components supported by the suspension is the sprung mass.) Unsprung mass includes the mass of components such as the wheel axles, wheel bearings, wheel hubs, tires, and a portion of the weight of driveshafts, springs, shock absorbers, and suspension links
With GM you started with the base sprung weight, then added the option(s) weight to this, the matched the total up with the chart to order the correct spring(s) for the car.