4.10's Who has them on their car
04-17-2007, 01:04 AM
#31
3rd Gear Member
Join Date: Feb 2006
Location:
Posts: 523
RE: 4.10's Who has them on their car
ORIGINAL: Supernaut
If I increased my hp, would that decrease the RPMs necessary to achieve a given speed? For example, if I do 100 mph @ 3000rpm now, and then I add an intake and tune, will I do 100 mph at, say 2700 rpm? And therefore, if I get 4.10 gears with an intake and tune will I still run 100 mph at 3000 rpm like I currently do with 3.55 gears w/o intake and tune?
If I increased my hp, would that decrease the RPMs necessary to achieve a given speed? For example, if I do 100 mph @ 3000rpm now, and then I add an intake and tune, will I do 100 mph at, say 2700 rpm? And therefore, if I get 4.10 gears with an intake and tune will I still run 100 mph at 3000 rpm like I currently do with 3.55 gears w/o intake and tune?
04-18-2007, 01:35 AM
#32
4th Gear Member
Join Date: Nov 2005
Location: Northern VA
Posts: 1,249
RE: 4.10's Who has them on their car
ORIGINAL: ratnacage
NO relation between HP and speed at a given RPM. Speed to RPM is a purely mechanical relationship.
ORIGINAL: Supernaut
If I increased my hp, would that decrease the RPMs necessary to achieve a given speed? For example, if I do 100 mph @ 3000rpm now, and then I add an intake and tune, will I do 100 mph at, say 2700 rpm? And therefore, if I get 4.10 gears with an intake and tune will I still run 100 mph at 3000 rpm like I currently do with 3.55 gears w/o intake and tune?
If I increased my hp, would that decrease the RPMs necessary to achieve a given speed? For example, if I do 100 mph @ 3000rpm now, and then I add an intake and tune, will I do 100 mph at, say 2700 rpm? And therefore, if I get 4.10 gears with an intake and tune will I still run 100 mph at 3000 rpm like I currently do with 3.55 gears w/o intake and tune?
True, you would need a built motor, fordged internals, balanced, ect.. to bump the redline up. I have seen some guys pushing the 4.6 stock engine to 6800 rpm but I would not go over 6500.
I think a built motor could reach8000 rpm andhold together.
Look at the NASCAR engines, theyhit 9000 rpm at 200+ MPHthese are well balanced machines
Type Chevrolet V8-SB2
Displacement 358 cu. in. max
CompressionRatio 12:1
InductionSystem 4V Holley carburetor
Transmittion 4 Speed
Horsepower 780hp @ 9800 RPM
Torque 530 ft.lbs. @ 7200 RPM
Fuel Economy 2.6 laps/gallon
GearRatio 2.90 to 6.33:1 (track dependent)
EDIT: Sorry I could not find FORD NASCAR Specs....
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