another hp guesstimate
ill post it june 2nd.
free ram air mod. but i thought the same thing at first too.
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Joined: Jul 1998
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From: Charlotte,MI USA
[Fourth, you DO NOT gain hp from wheel and tire changes. How can you acheive gains when the HP is ALREADY at the engine? Adding is just that....ADDING, as in making more at the engine. Change wheels and the engine is still making the same HP. Exhaust counts as adding becaus that is again...AT the engine.
It makes posts much easier to read.
It makes posts much easier to read.
You can gain horsepower shown at the wheels without gaining horsepower at the flywheel because you're using a chassis dyno which shows the power exerted upon the drums by the tires. Which includes the trans, the driveshaft, the rear end, the weight of the brake rotors, wheels, and tires.
He said over and over again rwhp that means rear wheel horsepower. He never claimed that changing the wheels changed the horsepower of the motor. He said that lighter wheels will let more of the engines hp get to the ground and he's right.
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Joined: Apr 2003
Posts: 4,507
From: FTW, TX
Apparently you really need to have the posts be much easier to read.
You can gain horsepower shown at the wheels without gaining horsepower at the flywheel because you're using a chassis dyno which shows the power exerted upon the drums by the tires. Which includes the trans, the driveshaft, the rear end, the weight of the brake rotors, wheels, and tires.
He said over and over again rwhp that means rear wheel horsepower. He never claimed that changing the wheels changed the horsepower of the motor. He said that lighter wheels will let more of the engines hp get to the ground and he's right.
You can gain horsepower shown at the wheels without gaining horsepower at the flywheel because you're using a chassis dyno which shows the power exerted upon the drums by the tires. Which includes the trans, the driveshaft, the rear end, the weight of the brake rotors, wheels, and tires.
He said over and over again rwhp that means rear wheel horsepower. He never claimed that changing the wheels changed the horsepower of the motor. He said that lighter wheels will let more of the engines hp get to the ground and he's right.
If you pay attention, the problem is with the use of the word "ADD." Even at the rear wheels it isn't adding anything; it is just not taking away as much. I never disagreed that it wasn't being less parasitic. It just isn't MAKING or ADDING.
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Joined: Jul 1998
Posts: 6,247
From: Charlotte,MI USA
For someone making comments about reading comprehension....
If you pay attention, the problem is with the use of the word "ADD." Even at the rear wheels it isn't adding anything; it is just not taking away as much. I never disagreed that it wasn't being less parasitic. It just isn't MAKING or ADDING.
If you pay attention, the problem is with the use of the word "ADD." Even at the rear wheels it isn't adding anything; it is just not taking away as much. I never disagreed that it wasn't being less parasitic. It just isn't MAKING or ADDING.
Didn't change anything at the flywheel but you did change the hp at the wheels which is adding/gaining or subtracting/losing and it'll make the car slower or faster.
Not a thing wrong with my reading comprehension. Your problem with the word ''add'' is that you want to apply all changes at the wheels to changes at the flywheel which just isn't true.
Thread Starter
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Joined: Jan 2007
Posts: 119
From: long island
I just got back from the dyno. I stayed for about 18 of the 30 cars then it was just too hot. A slp camaro 2002 make 325.5rwhp bone stock and a Ws6 made 318.xx stock. My car ran into a governor and the engine stopped or the dyno guy stopped at only 4650rpm. Heres the numbers with a sort of lean 13.45 to 13.55 air fuel. 288.48rwhp@4650rpm and 330.99rwtq@3xxxrpm.
Thread Starter
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Joined: Jan 2007
Posts: 119
From: long island
I just looked at a very similar dyno sheet online (torque within 1 lb and also 287-288rwhp at 4650rpm) This guy got 318@5500 at the wheels. so i was only about 2 rwhp off my guess of 320. Now to get rid of the 130mph governor.
Thread Starter
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Joined: Jan 2007
Posts: 119
From: long island
Not sure what was on it new, my neighbor had firestone 500s when i bought it, but guess it was a 118 gov. Vette doctors said they can get 15-20hp out of my car with a tune. does anybody believe theres that much to unlock with a basic bolt on car? The air fuel was 13.45-13.55 from 3300-4700rpm. I'm thinking 8-10.
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Joined: Jul 1998
Posts: 6,247
From: Charlotte,MI USA
Not sure what was on it new, my neighbor had firestone 500s when i bought it, but guess it was a 118 gov. Vette doctors said they can get 15-20hp out of my car with a tune. does anybody believe theres that much to unlock with a basic bolt on car? The air fuel was 13.45-13.55 from 3300-4700rpm. I'm thinking 8-10.