Stupid Question. How Many Valuve Is The 99-02 Gt 4.6?

steedamustang01 · 04-25-2002, 11:31 AM

I KNOW THE COBRA 4.6 HAS THE 32 VALUVE, BUT WHAT DOES THE REGULAR GT 4.6 HAVE?

GITY UUP · 04-25-2002, 11:38 AM

16 valeves eom.

steedamustang01 · 04-25-2002, 11:42 AM

WHAT'S (EOM)?

GITY UUP · 04-25-2002, 12:18 PM

End of message eom. I wish they would put the 32 valve motor in all Mustang GTs, but I guess that's why they sell the Cobra and you really couldn't differentiate the GT and the Cobra by anything but the independant rear suspension and the 32 valve motor and some different body parts.

steedamustang01 · 04-25-2002, 12:23 PM

WHAT IS THE ADVANTAGE OF HAVING MORE VALUES?

GITY UUP · 04-25-2002, 12:45 PM

It all relates to how well the engine breathes. The more air the intake and the exhaust valves on your heads take in and expel, the more HP your engine generates.

GITY UUP · 04-25-2002, 12:47 PM

Sweet hood and mirrors by the way. I won't have to paint my mirrors as my car is black, but color coding your mirrors to the rest of your Mustang looks great!

steedamustang01 · 04-25-2002, 12:58 PM

THANKS BRO, ... AND THANKS FOR ALL THE HELP

Unit 5302 · 04-25-2002, 11:28 PM

Pretty quick to see. Take a 4" cylinder bore, like the 302. About the biggest you can go with 2 valves is 2.02"/1.60." So your entire cylinder head area (if everything were flat) would be 12.56." The valves take up 3.205" + 2.011" = 5.216" of area. That's out of 12.56" of total area that could be utilized for the valves.

Now, if you were to do a 4 valve setup, like the Dominion 32 valve heads for the 5.0 OHV engine, it would use 2 - 1.60" intake and 2 - 1.40" exhaust valves. That's 2.011" + 2.011" + 1.539" + 1.539" = 7.10" of area. The increase in valve area to flow air through increased from 41.5% to 56.5%. An overall increase of 36% going from 2V to 4V per cylinder. Going to 5V per head, like a Ferrari would add even more, but it decreases in gain as you increase the number of valves. I think there are even some 6V heads out there for some engines. I can't see them being much more efficient than a 5V setup, and that's not a whole lot better than a 4V setup.

steedamustang01 · 04-26-2002, 07:09 AM

SLOW 97 · 04-26-2002, 02:13 PM

Not to be a smart@$$ but please don't tell me you didn't know your GT had 16 valves. The GT engine is known as the "Two-Valve" (2V) because it has two valves per cylinder. Simple math will tell you that 2 X 8=16!

steedamustang01 · 04-26-2002, 03:22 PM

THAT'S WHAT I HAD THOUGHT, BUT SOMEONE WAS TELLING ME OVER AND OVER THAT IT WAS A 32 VALUVE, AND I SAID IT WAS A 16, SO I TOLD THEM I'D GET ON HERE AND PROVE THEM WRONG, CUZ THEY DIDN'T BELIEVE ME.

04-25-2002, 11:31 AM	#1
steedamustang01 Registered Member Join Date: Jan 2002 Location: Florence, KY Posts: 120	Stupid Question. How Many Valuve Is The 99-02 Gt 4.6? I KNOW THE COBRA 4.6 HAS THE 32 VALUVE, BUT WHAT DOES THE REGULAR GT 4.6 HAVE? __________________ MODS: - Painted Side Mirrors, Straight Pipes, K&N Filtercharger, Modified Air Silencer, Steeda Tremex 3650 Short Throw Tri-Ax Shifter, Saleen MOMO Shifter, Custom Painted Interior, Modified Saleen Racecraft Progressive Sport Springs SLAMMED 3 1/2 inches, Saleen S-281 Wing, Saleen chrome wheels 18x9 front and 18x10 rear, Saleen Locking Lugs, 265-35-ZR18 Toyo Proxes T1-S's, White Face Indiglo Gauges, 9007 Silver Star HID Headlights, Personalized Licence Plate " 2L8 I 1 " (To Late I Won), Chrome Bumper Decal inserts, Lowered Windshield Wiper MOD, MAC Offset rack bushings, 5% Limo Window Tint.

04-25-2002, 11:38 AM	#2
GITY UUP Registered Member Join Date: Oct 2000 Location: Sterling, VA Posts: 43	16 valves (eom) 16 valeves eom. __________________ I eat Chevys, fart imports and crap Mopars....

04-25-2002, 11:42 AM	#3
steedamustang01 Registered Member Join Date: Jan 2002 Location: Florence, KY Posts: 120	WHAT'S (EOM)? __________________ MODS: - Painted Side Mirrors, Straight Pipes, K&N Filtercharger, Modified Air Silencer, Steeda Tremex 3650 Short Throw Tri-Ax Shifter, Saleen MOMO Shifter, Custom Painted Interior, Modified Saleen Racecraft Progressive Sport Springs SLAMMED 3 1/2 inches, Saleen S-281 Wing, Saleen chrome wheels 18x9 front and 18x10 rear, Saleen Locking Lugs, 265-35-ZR18 Toyo Proxes T1-S's, White Face Indiglo Gauges, 9007 Silver Star HID Headlights, Personalized Licence Plate " 2L8 I 1 " (To Late I Won), Chrome Bumper Decal inserts, Lowered Windshield Wiper MOD, MAC Offset rack bushings, 5% Limo Window Tint.

04-25-2002, 12:18 PM	#4
GITY UUP Registered Member Join Date: Oct 2000 Location: Sterling, VA Posts: 43	EOM equals.... End of message eom. I wish they would put the 32 valve motor in all Mustang GTs, but I guess that's why they sell the Cobra and you really couldn't differentiate the GT and the Cobra by anything but the independant rear suspension and the 32 valve motor and some different body parts. __________________ I eat Chevys, fart imports and crap Mopars....

04-25-2002, 12:23 PM	#5
steedamustang01 Registered Member Join Date: Jan 2002 Location: Florence, KY Posts: 120	WHAT IS THE ADVANTAGE OF HAVING MORE VALUES? __________________ MODS: - Painted Side Mirrors, Straight Pipes, K&N Filtercharger, Modified Air Silencer, Steeda Tremex 3650 Short Throw Tri-Ax Shifter, Saleen MOMO Shifter, Custom Painted Interior, Modified Saleen Racecraft Progressive Sport Springs SLAMMED 3 1/2 inches, Saleen S-281 Wing, Saleen chrome wheels 18x9 front and 18x10 rear, Saleen Locking Lugs, 265-35-ZR18 Toyo Proxes T1-S's, White Face Indiglo Gauges, 9007 Silver Star HID Headlights, Personalized Licence Plate " 2L8 I 1 " (To Late I Won), Chrome Bumper Decal inserts, Lowered Windshield Wiper MOD, MAC Offset rack bushings, 5% Limo Window Tint.

04-25-2002, 12:45 PM	#6
GITY UUP Registered Member Join Date: Oct 2000 Location: Sterling, VA Posts: 43	It all relates to how well the engine breathes. The more air the intake and the exhaust valves on your heads take in and expel, the more HP your engine generates. __________________ I eat Chevys, fart imports and crap Mopars....

04-25-2002, 12:47 PM	#7
GITY UUP Registered Member Join Date: Oct 2000 Location: Sterling, VA Posts: 43	steedamustang01 Sweet hood and mirrors by the way. I won't have to paint my mirrors as my car is black, but color coding your mirrors to the rest of your Mustang looks great! __________________ I eat Chevys, fart imports and crap Mopars....

04-25-2002, 12:58 PM	#8
steedamustang01 Registered Member Join Date: Jan 2002 Location: Florence, KY Posts: 120	THANKS BRO, ... AND THANKS FOR ALL THE HELP __________________ MODS: - Painted Side Mirrors, Straight Pipes, K&N Filtercharger, Modified Air Silencer, Steeda Tremex 3650 Short Throw Tri-Ax Shifter, Saleen MOMO Shifter, Custom Painted Interior, Modified Saleen Racecraft Progressive Sport Springs SLAMMED 3 1/2 inches, Saleen S-281 Wing, Saleen chrome wheels 18x9 front and 18x10 rear, Saleen Locking Lugs, 265-35-ZR18 Toyo Proxes T1-S's, White Face Indiglo Gauges, 9007 Silver Star HID Headlights, Personalized Licence Plate " 2L8 I 1 " (To Late I Won), Chrome Bumper Decal inserts, Lowered Windshield Wiper MOD, MAC Offset rack bushings, 5% Limo Window Tint.

04-25-2002, 11:28 PM	#9
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Pretty quick to see. Take a 4" cylinder bore, like the 302. About the biggest you can go with 2 valves is 2.02"/1.60." So your entire cylinder head area (if everything were flat) would be 12.56." The valves take up 3.205" + 2.011" = 5.216" of area. That's out of 12.56" of total area that could be utilized for the valves. Now, if you were to do a 4 valve setup, like the Dominion 32 valve heads for the 5.0 OHV engine, it would use 2 - 1.60" intake and 2 - 1.40" exhaust valves. That's 2.011" + 2.011" + 1.539" + 1.539" = 7.10" of area. The increase in valve area to flow air through increased from 41.5% to 56.5%. An overall increase of 36% going from 2V to 4V per cylinder. Going to 5V per head, like a Ferrari would add even more, but it decreases in gain as you increase the number of valves. I think there are even some 6V heads out there for some engines. I can't see them being much more efficient than a 5V setup, and that's not a whole lot better than a 4V setup.

04-26-2002, 07:09 AM	#10
steedamustang01 Registered Member Join Date: Jan 2002 Location: Florence, KY Posts: 120	__________________ MODS: - Painted Side Mirrors, Straight Pipes, K&N Filtercharger, Modified Air Silencer, Steeda Tremex 3650 Short Throw Tri-Ax Shifter, Saleen MOMO Shifter, Custom Painted Interior, Modified Saleen Racecraft Progressive Sport Springs SLAMMED 3 1/2 inches, Saleen S-281 Wing, Saleen chrome wheels 18x9 front and 18x10 rear, Saleen Locking Lugs, 265-35-ZR18 Toyo Proxes T1-S's, White Face Indiglo Gauges, 9007 Silver Star HID Headlights, Personalized Licence Plate " 2L8 I 1 " (To Late I Won), Chrome Bumper Decal inserts, Lowered Windshield Wiper MOD, MAC Offset rack bushings, 5% Limo Window Tint.

04-26-2002, 02:13 PM	#11
SLOW 97 Registered Member Join Date: Feb 2002 Location: Arlington Heights,IL Posts: 231	Not to be a smart@$$ but please don't tell me you didn't know your GT had 16 valves. The GT engine is known as the "Two-Valve" (2V) because it has two valves per cylinder. Simple math will tell you that 2 X 8=16! __________________ '97 Laser Red GT Coupe Stock 2V (Pulled Silencer) 4R70W Automatic Ripped off a BLISTERING 15.37@90MPH With a 2.21 60ft Just Installed- K&N Air Filter Coming Soon...... -4.10's -Flowmaster A/T or Magnapack Cat-Back

04-26-2002, 03:22 PM	#12
steedamustang01 Registered Member Join Date: Jan 2002 Location: Florence, KY Posts: 120	THAT'S WHAT I HAD THOUGHT, BUT SOMEONE WAS TELLING ME OVER AND OVER THAT IT WAS A 32 VALUVE, AND I SAID IT WAS A 16, SO I TOLD THEM I'D GET ON HERE AND PROVE THEM WRONG, CUZ THEY DIDN'T BELIEVE ME. __________________ MODS: - Painted Side Mirrors, Straight Pipes, K&N Filtercharger, Modified Air Silencer, Steeda Tremex 3650 Short Throw Tri-Ax Shifter, Saleen MOMO Shifter, Custom Painted Interior, Modified Saleen Racecraft Progressive Sport Springs SLAMMED 3 1/2 inches, Saleen S-281 Wing, Saleen chrome wheels 18x9 front and 18x10 rear, Saleen Locking Lugs, 265-35-ZR18 Toyo Proxes T1-S's, White Face Indiglo Gauges, 9007 Silver Star HID Headlights, Personalized Licence Plate " 2L8 I 1 " (To Late I Won), Chrome Bumper Decal inserts, Lowered Windshield Wiper MOD, MAC Offset rack bushings, 5% Limo Window Tint.

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
question about o2 sensors on a 95 GT	HopingForAGT	Windsor Power	4	06-04-2002 01:17 AM
02 Gt or 02 Z28..that is the question.	Nick	Modular Madness	11	07-16-2001 09:49 PM
Question: '97 Mustang GT	crumbie	Modular Madness	7	05-08-2001 08:39 AM
Stupid question	98'MustangGT	Modular Madness	4	09-19-2000 09:57 AM
99/00 GT Question	98YellowGT	Modular Madness	6	07-18-2000 06:05 PM