[TXCSSU]

Does a "VTAK" badge still add 100 HP?

[Nilly Welson]

Originally Posted by wwiiavfan

Are you the original owner? If not, you can’t say 100% certain it is stock. It may have been modded. Engine cover is missing, why?

Removing engine cover adds approx. 30+ hp.

[ZO6Ted]

Loss on modern transmissions are not as much. You can figure 10% on manual and 12-16 % on 6-10 speed autos. 15% is a safe # usually. Although a 4L80 would be around 20 but they don't break as much.

[FarmerFran]

True story...

My 2004 GTO A4, Ran a best of 11.75 @ ~120. 4000lbs with driver (me).

on the dyno it read 350/350

[Nilly Welson]

Originally Posted by Need4Camaro

455 HP is rated at the flywheel, not the rear wheel… Stock LT1’s are going to put down in the ball park of 380 - 420 HP on a dyno depending on the dyno and cars transmission.

The SS Lt1 puts out just over 500hp at the crank with SAE ratings.

[Need4Camaro]

@ the OP we are interested in seeing what your car does on the quarter mile, that or atleast take it to a different dyno and post the results. Freak cars are possible, there were a few 4th Gen LS1 M6’s breaking into mid to high 12’s bone stock.

I’m also interested to know more details on the fluids you’re running.

Originally Posted by Nilly Welson

The SS Lt1 puts out just over 500hp at the crank with SAE ratings.

Can you show me this? The Camaro SS is only rated at 455 HP by the manufacturer.

[UnknownJinX]

Originally Posted by L78toLT1

I'll second this. When I was made aware of the recommend coolant level in the overflow tank, I topped mine off, and have had to top it off periodically ever since. At the past two Camarofests, I noted that the overflow tanks on nearly all gen6 Camaros were low.

I guess it's just a quirk with the 6th Gen Camaro. I have to note, I have seen a few Camaros with OP's coolant level and they drive their Camaro on the track without any issues. Obviously, I am not saying you don't need to top it off, but it also doesn't seem to be the end of the world.

Originally Posted by AmbientLighting

I am the original owner there is no other work done. I hate engine covers so I removed it as well. Dyno-Comp is one of the most reputable shops in the country their dyno is most definitely calibrated. It’s a 6-speed car and I have custom blended racing fluids through the vehicle, can this be the reason why? Less drivetrain loss. Engine is pushing 550+ hp stock which is abnormal.

The difference caused by fluids would be so miniscule, it would just end up in the measurement error/deviation territory.

Originally Posted by PEGA2SS

Lol no need to b rude
Our fellow brother is simply looking for answers
I would say, w my limited knowledge, that being 6spd and having lightweight fluids thru out would def aid

If u guess the engine takes 10 qts of oil
If u run 10/40 vs 0/20 that’s a lot of free power (at least 5%?)

Being 6spd I would guess is another 10% increase vs auto ?

If you are running a Camaro hard on 0W-20, you need to stop whatever you are smoking.

That said, oil weight doesn't affect horsepower or fuel consumption noticeably on an individual level. Again, any possible improvement could easily be dismissed as standard error/deviation.

The reason manufacturers care is because of CAFE. When you sum up the difference of fuel consumption of tens of thousands or far more vehicles, that will add up to something noticeable.

[Nilly Welson]

Originally Posted by Need4Camaro

@ the OP we are interested in seeing what your car does on the quarter mile, that or atleast take it to a different dyno and post the results. Freak cars are possible, there were a few 4th Gen LS1 M6’s breaking into mid to high 12’s bone stock.

I’m also interested to know more details on the fluids you’re running.



Can you show me this? The Camaro SS is only rated at 455 HP by the manufacturer.

455 Net ratings with belts and accessories. Engine without access. puts out over 500hp at the crank. Its been tested...search it.

[FarmerFran]

Originally Posted by Need4Camaro

@ the OP we are interested in seeing what your car does on the quarter mile, that or atleast take it to a different dyno and post the results. Freak cars are possible, there were a few 4th Gen LS1 M6’s breaking into mid to high 12’s bone stock.

I grew up in the MIR, ATCO, CECIL CDW area, it was quite a few of them in the 12s stock.

[Need4Camaro]

Originally Posted by Nilly Welson

455 Net ratings with belts and accessories. Engine without access. puts out over 500hp at the crank. Its been tested...search it.

Technically any motor without accessories is going to put out more power than rated power. There are a few people who take their serpentine belt off and put ice packs on their intake to run 4 tenths of a second faster down the quarter mile which is fine for a very short time, but that’s not exactly usable power to the average driver when you’re running around without a water pump or alternator though. Rated power is power that is reliably usable by the consumer. If I were to search for a stock LT1 HP, all consumer sources will read at 455 HP.

[Idaho2018GTPremium]

Originally Posted by PEGA2SS

15% for manual
20% for auto
Roughly ?

Nowadays, more like 11% +/- for manual, and 13-15% for autos. Transmissions are way more efficient than they used to be. Lighter duty autos like the 10R80 are on the lower end of that range (13%), and heavier duty transmissions like the 10R90 in the ZL1 auto are on the upper end of that range (14-15%).

Originally Posted by Nilly Welson

455 Net ratings with belts and accessories. Engine without access. puts out over 500hp at the crank. Its been tested...search it.

What year is it, 1967? No one does gross hp ratings anymore. Net hp ratings with accessories and the full exhaust installed is what is rated by the manufacturers these days (for the past 50 years +/-). SAE created a standard method for measuring power so people could compare apples to apples from different manufacturers. I think most of the American manufacturers follow these procedures now for consistent hp ratings comparisons.

For comparison, German manufacturers rate their engines at horrible conditions (much worse than SAE conditions), so they make more power than what we (Americans) think they are "rated" for. For example, a 640 hp 2021 Porsche 911 Turbo S will end up making nearly that much on a dyno at the wheels. I think Porsche and BMW rate their engines at 100 F at 5000' altitude or something with an astronomically high density altitude, because they are usually quicker/faster than their similarly rated American or Japanese counterparts.

[Chevelle vs Camaro]

Bought mine used…. Have the same problem….




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[2SS Capt]

Originally Posted by Gunkk

THIS!!!

[arpad_m]

Originally Posted by AmbientLighting

I am the original owner there is no other work done. I hate engine covers so I removed it as well. Dyno-Comp is one of the most reputable shops in the country their dyno is most definitely calibrated. It’s a 6-speed car and I have custom blended racing fluids through the vehicle, can this be the reason why? Less drivetrain loss. Engine is pushing 550+ hp stock which is abnormal.

That engine is rated for 455 hp and is not pushing 550+ hp with stock parts, I'm pretty sure about that, racing fluids or not.