[arpad_m]

Originally Posted by FarmerFran

The GVWR on the sticker includes all fluids including a full tank of gas. This is a regulation.

What do your 2 stickers say?

GVWR: 4483 lbs
Max load: 688 lbs
2018 order book says my curb weight is 3697 lbs (all fluids + full tank of gas included)

My point is that simply that whenever you want to figure out how much someone saved or added with their mods compared to stock, I find GVWR of little use. They'd weigh the car with a full tank of gas, subtract their own personal weight, and that's the number you want to compare to your own car. If it's my car, I can directly compare numbers on the scale, provided the tank has the same amount in it with each measurement.

I see your point, but it's a formula either way, whichever variable one reduces it to for comparison is a matter of preference. You prefer GVWR, probably because that's the most logical for you, and that's fine.

[FarmerFran]

Originally Posted by arpad_m

GVWR: 4483 lbs
Max load: 688 lbs
2018 order book says my curb weight is 3697 lbs (all fluids + full tank of gas included)

My point is that simply that whenever you want to figure out how much someone saved or added with their mods compared to stock, I find GVWR of little use. They'd weigh the car with a full tank of gas, subtract their own personal weight, and that's the number you want to compare to your own car. If it's my car, I can directly compare numbers on the scale, provided the tank has the same amount in it with each measurement.

I see your point, but it's a formula either way, whichever variable one reduces it to for comparison is a matter of preference. You prefer GVWR, probably because that's the most logical for you, and that's fine.

What are your axle ratings?

The sticker on the door is printed from the factory build sheet.

[lt4camaro]

Originally Posted by FarmerFran

Only options

Metallic wheels
Black wheel lugs
NPP

Weight = 3945 (including all fluids)

Sheesh. I thought my GTO was heavy

Ok, now I know why its heavy, its a rag top

[Rhobz]

FarmerFran's logic is sound and holds water for all vehicles/trailers on the road.

You want to buy a trailer to tow your car around? The first thing you need to do is find out if the trailer is capable of hauling your car AND any other crap you plan on including. Most people make mistakes here when looking at enclosed trailers and especially toy hauler trailers with living space. People tend to look at the cargo capacity and say "Hey, the cargo capacity is 4000lbs and my car weighs 3500 so I am good to go"...except that they forget about the 10 gallons of extra fuel they plan to bring (~65lbs), the jack and jack stands (~100lbs), the tools (100+lbs), the tie downs, the extra tires, the cooler, the beer, the carne asada, the plates and napkins and utensils, etc etc etc.

You were all right that GVWR is the HIGHEST NUMBER that this vehicle and ALL of the crap inside it (including you) should ever weigh. But those of you that argued this point with him missed the fact that he never said the door jamb stickers GIVE you the curb weight. He said you CAN GET the curb weight from there. It's always a formula.

[arpad_m]

Originally Posted by FarmerFran

What are your axle ratings?

GVWR: 4483 lbs
GAWR FRT: 2184 lbs
GAWR RR: 2299 lbs

[clyde]

My 2017 2.0T /w Technology package, stock exhaust, TRM 18x8.5" wheels with 275/35-18 RE71s, minimal trunk junk, and about 7 gallons was 3274 on SCCA scales at the 2018 NJ Pro.

Same car 3223 at the 2018 Oscoda Pro with about 4 gallons, minimal trunk junk, and the exhaust aft of the car was replaced with just pipe and an 18" Borla. I don't recall the exact weight of the exhausts, but the Borla was 35 pounds lighter when I swapped them.

Neil Britton's 2017 2.0T with a different exhaust, lighter wheels than mine, and I don't remember how much fuel was 3199 on the scales in Oscoda right before I weighed mine.

My 2020 2SS 1LE with PDR, nav, full trunk junk, full tank (minus two miles worth), and a wheel tire package 22 pounds lighter than the OE wheels/tires was 3755 on a set of borrowed Intercomp scales in my garage a couple weeks ago.

Just offered as data points. For those not familiar with the SCCA scales used at National Solo events, they are not exactly known for being hyper-accurate or even loosely consistent. The scales I used for the new car were spot on with a known 200 pound weight. Calibration process calls for a known 500 pound weight, but 200 was what I had.

[VR Baron]

Originally Posted by arpad_m

Yep, unless Hennessey worked some weight reduction magic such as removing seats or replacing body parts with carbon fiber equivalents, I simply don't see how this is possible. They must have added a bigger S/C with auxiliary components such as an intercooler, a pump and a bunch of extra pipes. I'm not even sure JSH has a different, less heavy exhaust, he says stock catback in his sig.

3762 for a 2ss 1le is what I see car mags cite. By the door jab math mine is 3802. No extras at all.
A automatic zl1 shows 3938. I saw one where with sunroof, by the door sticker, curb was 4002.sunroof weighs extra but not that difference

[lt4camaro]

Originally Posted by VR Baron

3762 for a 2ss 1le is what I see car mags cite. By the door jab math mine is 3802. No extras at all.
A automatic zl1 shows 3938. I saw one where with sunroof, by the door sticker, curb was 4002.sunroof weighs extra but not that difference

Like I posted earlier, actual scale weight with a full tank of gas the cars usually show a lighter weight then what the GVW weight minus occupants and luggage load weight shown on the door jamb sticker.

Here is my 2021 LT1 with a 10 speed auto, no option car. These cars with a manual trans are 3617 curb weight, do not know how much the auto trans adds. Stickers say 4437 GVWR, -723 pay load = 3714 . My certificate of origin says shipping weight 3589. Add about 90lbs for fuel and your at 3679, I have not scaled the car yet but I am sure it will be very close to the 3679#

[JSH]

Originally Posted by arpad_m

Yep, unless Hennessey worked some weight reduction magic such as removing seats or replacing body parts with carbon fiber equivalents, I simply don't see how this is possible. They must have added a bigger S/C with auxiliary components such as an intercooler, a pump and a bunch of extra pipes. I'm not even sure JSH has a different, less heavy exhaust, he says stock catback in his sig.

My SC and TB remain stock. Hennessey didn't do any Jenny Craig work but we did. Just from recollection our estimates were something like:

Battery 30#
Pass seat 40
Rear seat 30
Headers-back 70
Wheels/tires 30

So, my 3620# was taken after this diet with 2 gals. fuel. That was just for one event and then we put it back together. I was again surprised how fast 4 guys with the right tools can do stuff.

[VR Baron]

Originally Posted by lt4camaro

Like I posted earlier, actual scale weight with a full tank of gas the cars usually show a lighter weight then what the GVW weight minus occupants and luggage load weight shown on the door jamb sticker.

Here is my 2021 LT1 with a 10 speed auto, no option car. These cars with a manual trans are 3617 curb weight, do not know how much the auto trans adds. Stickers say 4437 GVWR, -723 pay load = 3714 . My certificate of origin says shipping weight 3589. Add about 90lbs for fuel and your at 3679, I have not scaled the car yet but I am sure it will be very close to the 3679#

Automatics are about 60 lbs more then manual. If your tank was empty add about 114 lbs

[lt4camaro]

Originally Posted by VR Baron

Automatics are about 60 lbs more then manual. If your tank was empty add about 114 lbs

I believe the factory puts 3 to 5 gallons in the car and that is why the shipping weight is low.

[arpad_m]

Originally Posted by JSH

My SC and TB remain stock. Hennessey didn't do any Jenny Craig work but we did. Just from recollection our estimates were something like:

Battery 30#
Pass seat 40
Rear seat 30
Headers-back 70
Wheels/tires 30

So, my 2620# was taken after this diet with 2 gals. fuel. That was just for one event and then we put it back together. I was again surprised how fast 4 guys with the right tools can do stuff.

Now it all fell in place, thanks for the info

I'll read that "2620" as "3620"

[JSH]

Yea, an obvious typo

Originally Posted by arpad_m

Now it all fell in place, thanks for the info

I'll read that "2620" as "3620"