Won't spin tires
#16
My friends mom has an '03 supercrew lariat with 305 buckshot mudders and he says it will spin the tires but I think he's lying. He has to be lying because theres no way it would do that even if he powerbraked. These trucks are heavy and not really meant to spin the tires but I do it in my truck all the time
#19
Originally Posted by jpdadeo
hp & torque are synonymous
you can't have one without the other
you can't have one without the other
#21
I know what you mean.
Originally Posted by 3FordMan
I have a 2003 Screw, and it won't spin the tires. Why?
#22
You can help the "choked off" engine though by adding a freer flowing exhaust (Magnaflow, better intake AF1, AirRaid, and a tuner) and then you will spin the tires!! For about $1K - $1,300 you can wake this engine/drivetrain up
I have the Magnflow exhaust and now the AF1 - and am now researching into Tuners.
I have the Magnflow exhaust and now the AF1 - and am now researching into Tuners.
#23
Engine torque does all the work.
HP is a calculated value.
HP = rpm x torque / by 5252.
Example: 3200 rpm x 250 lb/ft. = 800,000 / by 5252 = 153.32 hp.
To see the difference btween the engine sizes, follow a small engined car up a hill then follow a large engine up a hill. The small engine huffs all the way up compaired to the larger one. Torque is the difference no matter how hard the little motor is RPMed.
HP is a calculated value.
HP = rpm x torque / by 5252.
Example: 3200 rpm x 250 lb/ft. = 800,000 / by 5252 = 153.32 hp.
To see the difference btween the engine sizes, follow a small engined car up a hill then follow a large engine up a hill. The small engine huffs all the way up compaired to the larger one. Torque is the difference no matter how hard the little motor is RPMed.
#24
It's a torque vs traction issue.
More wieght on the rear tires and they spinn harder.
With a 3.73 axle they spin easier than a 3.55.
Smaller tires will spin easier.
Limited slip axle will improve traction and limit slipping.
Softer tires grip better improving traction and reducing spin.
Cool air had more oxygen, more power, more torque, more spin.
Cold air has more total drive train resistance from thick oil, wasting torque.
When the rings get dirty compression drops with a loss of torque.
When the fuel filter gets dirty there is a loss of torque.
Dirty fuel injectors reduce torque.
When the MAF gets dirty there is a loss of torque.
Shifting the weight of the vehicle to the front tires by braking will reduce traction in the rear and improve spin.
Accelerating quickly will send torque to the wheels before the weight of the vehicle shifts traction to the rear wheels and they will spin easier.
For example. If you go slow, about 5-10 mph. Hit the brakes hard enought to shift the weight to the front tires, while making a brisk turn. Then quicly go the the gas good and hard. If you do it right you'll get torque to the rear while the weight is still shiftet to the front tires. The truck will spin around and you'll do a doughnut. The rear wheels will be all torque and no traction, so you'll go no where. If you hold the gas down and straighten out the wheel the weight of the truck will shift to the rear wheels providing more traction and you'll roar out of the spin. Don't try this at home on the street though.
I've done that with a SuperCab with 5.4 3.73 non-LS axle, but never tried it in a SuperCrew with 5.4 3.55 LS axle.
More wieght on the rear tires and they spinn harder.
With a 3.73 axle they spin easier than a 3.55.
Smaller tires will spin easier.
Limited slip axle will improve traction and limit slipping.
Softer tires grip better improving traction and reducing spin.
Cool air had more oxygen, more power, more torque, more spin.
Cold air has more total drive train resistance from thick oil, wasting torque.
When the rings get dirty compression drops with a loss of torque.
When the fuel filter gets dirty there is a loss of torque.
Dirty fuel injectors reduce torque.
When the MAF gets dirty there is a loss of torque.
Shifting the weight of the vehicle to the front tires by braking will reduce traction in the rear and improve spin.
Accelerating quickly will send torque to the wheels before the weight of the vehicle shifts traction to the rear wheels and they will spin easier.
For example. If you go slow, about 5-10 mph. Hit the brakes hard enought to shift the weight to the front tires, while making a brisk turn. Then quicly go the the gas good and hard. If you do it right you'll get torque to the rear while the weight is still shiftet to the front tires. The truck will spin around and you'll do a doughnut. The rear wheels will be all torque and no traction, so you'll go no where. If you hold the gas down and straighten out the wheel the weight of the truck will shift to the rear wheels providing more traction and you'll roar out of the spin. Don't try this at home on the street though.
I've done that with a SuperCab with 5.4 3.73 non-LS axle, but never tried it in a SuperCrew with 5.4 3.55 LS axle.
Last edited by greencrew; 07-26-2005 at 09:33 PM.
#25