Engine weights
Thread Starter
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
Engine weights
Saw this list on another forum:
http://wheeltalk.fancal.net/wp-conte...ine_weight.txt
Our LT5 is quite the porker!
http://wheeltalk.fancal.net/wp-conte...ine_weight.txt
Our LT5 is quite the porker!
Thread Starter
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
Do you mean why isn't the LT5 lighter than the L98? If so, I'd guess the fact that the heads are a lot heavier is part. And the LT5 has larger fluid capacities, both coolant and oil (more than double as much oil). I don't know if that's considered as part of the "fully dressed" weight or not? I also would wonder how much of the exhaust is included. If it's just the manifolds, I'd think the Z probably has much heavier manifolds than the L98 because the Z had the cats integrated with the manifolds. The L98 does not. I'm just speculating though.
Here's another list, much shorter but seems to have some engines that are not on that long text list:
Here's another list, much shorter but seems to have some engines that are not on that long text list:
Last edited by Aurora40; Dec 9, 2007 at 10:44 AM.
Team Owner
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Drifting
Joined: Sep 2005
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From: Pasadena Maryland
Burning Brakes
Joined: Jan 2003
Posts: 820
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From: Jupiter Fl.
Too many "Apples vs. Oranges" on that list. 
Since when does an L98 weigh the same as an LT5, no way.
I've read somewhere that the ZR1 had a 150lb. weight penalty compared to the regular C4. I don't know if that was the whole car, or just the engine weight.
I think the LT5 weighs at least a 100lbs. more than an L98.
Since when does an L98 weigh the same as an LT5, no way.
I've read somewhere that the ZR1 had a 150lb. weight penalty compared to the regular C4. I don't know if that was the whole car, or just the engine weight.
I think the LT5 weighs at least a 100lbs. more than an L98.
Melting Slicks
Joined: Aug 1999
Posts: 2,619
Likes: 1
From: Whidbey Island Washington
Too many "Apples vs. Oranges" on that list.
Since when does an L98 weigh the same as an LT5, no way.
I've read somewhere that the ZR1 had a 150lb. weight penalty compared to the regular C4. I don't know if that was the whole car, or just the engine weight.
I think the LT5 weighs at least a 100lbs. more than an L98.
Since when does an L98 weigh the same as an LT5, no way.
I've read somewhere that the ZR1 had a 150lb. weight penalty compared to the regular C4. I don't know if that was the whole car, or just the engine weight.
I think the LT5 weighs at least a 100lbs. more than an L98.
Last edited by ZRWON; Dec 9, 2007 at 06:15 PM.
Advanced
Joined: Dec 2007
Posts: 81
Likes: 0
From: IL
Too many "Apples vs. Oranges" on that list.
Since when does an L98 weigh the same as an LT5, no way.
I've read somewhere that the ZR1 had a 150lb. weight penalty compared to the regular C4. I don't know if that was the whole car, or just the engine weight.
I think the LT5 weighs at least a 100lbs. more than an L98.
Since when does an L98 weigh the same as an LT5, no way.
I've read somewhere that the ZR1 had a 150lb. weight penalty compared to the regular C4. I don't know if that was the whole car, or just the engine weight.
I think the LT5 weighs at least a 100lbs. more than an L98.
You can see and compare that in LT1 from the Table by Aurora40
Thread Starter
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
Too many "Apples vs. Oranges" on that list.
Since when does an L98 weigh the same as an LT5, no way.
I've read somewhere that the ZR1 had a 150lb. weight penalty compared to the regular C4. I don't know if that was the whole car, or just the engine weight.
I think the LT5 weighs at least a 100lbs. more than an L98.
Since when does an L98 weigh the same as an LT5, no way.
I've read somewhere that the ZR1 had a 150lb. weight penalty compared to the regular C4. I don't know if that was the whole car, or just the engine weight.
I think the LT5 weighs at least a 100lbs. more than an L98.
The whole car is probably about 150 lbs heavier. However, one thing to keep in mind is that those weights are always for base cars. The base curb weight is used by the EPA for fuel economy testing, so you can bet they aren't optioning up an L98 to get the base weight.
So the ZR-1 has as standard equipment, larger brakes, leather sport seats, Bose stereo, LTPWS, and selective ride control. Plus the Z51 package includes a power steering cooler. And the base L98 has an automatic as the standard transmission (which I'd bet is probably lighter overall). I think these things absolutely add weight to the car. In addition, the ZR-1 had wider rear tires and wheels, an oil cooler, and more oil and coolant than an L98.
So in my opinion most of the weight difference is probably attributable to these differences as opposed to the weight of the all-aluminum engine.
Thread Starter
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
FYI, base curb weights for 1990 MY:
Automatic coupe: 3284 lbs
6-speed coupe: 3330 lbs
from data at corvetteactioncenter.com.
They don't list the curb weight of the ZR-1 for 1990, though I believe it was around 3,450 lbs. That would make it about 165 lbs heavier than a base automatic, or 120 lbs heavier than a base 6-speed.
Automatic coupe: 3284 lbs
6-speed coupe: 3330 lbs
from data at corvetteactioncenter.com.
They don't list the curb weight of the ZR-1 for 1990, though I believe it was around 3,450 lbs. That would make it about 165 lbs heavier than a base automatic, or 120 lbs heavier than a base 6-speed.
Drifting
Joined: Jun 2002
Posts: 1,491
Likes: 6
From: Portland Oregon
I'd have a hard time believing the LT5 was 100 lbs heavier than the iron block L98.
The whole car is probably about 150 lbs heavier. However, one thing to keep in mind is that those weights are always for base cars. The base curb weight is used by the EPA for fuel economy testing, so you can bet they aren't optioning up an L98 to get the base weight.
So the ZR-1 has as standard equipment, larger brakes, leather sport seats, Bose stereo, LTPWS, and selective ride control. Plus the Z51 package includes a power steering cooler. And the base L98 has an automatic as the standard transmission (which I'd bet is probably lighter overall). I think these things absolutely add weight to the car. In addition, the ZR-1 had wider rear tires and wheels, an oil cooler, and more oil and coolant than an L98.
So in my opinion most of the weight difference is probably attributable to these differences as opposed to the weight of the all-aluminum engine.
The whole car is probably about 150 lbs heavier. However, one thing to keep in mind is that those weights are always for base cars. The base curb weight is used by the EPA for fuel economy testing, so you can bet they aren't optioning up an L98 to get the base weight.
So the ZR-1 has as standard equipment, larger brakes, leather sport seats, Bose stereo, LTPWS, and selective ride control. Plus the Z51 package includes a power steering cooler. And the base L98 has an automatic as the standard transmission (which I'd bet is probably lighter overall). I think these things absolutely add weight to the car. In addition, the ZR-1 had wider rear tires and wheels, an oil cooler, and more oil and coolant than an L98.
So in my opinion most of the weight difference is probably attributable to these differences as opposed to the weight of the all-aluminum engine.
My fully optioned 94 6 speed LT-1 car weighed in at close to 3450lbs.
My lightened up 91 Z weighs 3350lbs on the same scale.
Melting Slicks
Joined: Dec 2002
Posts: 2,070
Likes: 12
From: NY
I dont agree with the chart on some engines. Especially the LT1 and L98.
My 1970 LT1 is 501 LB. Thats a dry engine without exhaust or flywheel as it should be measured.
I plan to measure my LT5 engine in a few months, so I will know for sure.
My 1970 LT1 is 501 LB. Thats a dry engine without exhaust or flywheel as it should be measured.
I plan to measure my LT5 engine in a few months, so I will know for sure.
Advanced
Joined: Dec 2007
Posts: 81
Likes: 0
From: IL
Ls7 = 490 lb
Ls7 dry = 458 lb
Did i miss something here?!
Last edited by Killer_Zee; Dec 10, 2007 at 03:46 PM.
