3.73 gears

95GTS · 11-17-1999, 08:44 PM

Will these gears hurt my top end or pretty much spread out the power band thru the revs? I know that the 4.6 Has alot of it's power at the higher revs. Just curious. I've been told these are the best gears for a 5-speed that's a daily driver/track participant. Thanks a lot.

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1996 Mustang GTS

[This message has been edited by 96GTS (edited 11-17-1999).]

95GTS · 11-17-1999, 08:49 PM

l

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1996 Mustang GTS
All stock (not for long)
15.4 @ 94.4 mph (1/4 mi.)

Danbo · 11-18-1999, 12:14 AM

I've tried both 3.55 and 3.73's in my Cobra. I think they are both good choices. I prefer
the 3.73's. They won't hurt your top end at
all. The way a stock Mustang is geared you would 600+hp to pull 5th gear to redline. You
can calculate the change in RPM at various
speeds in 5th gear with 3.55,3.73 and 4.10's
and then decide what you think is best for
your application.
dan

------------------
'96 Cobra, Steeda G-Trac
Stage III Suspension, K&N
Filter,77mmPro-M,FMS Ceramic
Coated Headers,Bassini-X Pipe,
FMS Aluminum driveshaft,
FMS 3.73's, Cobra R's ,
Firestone SZ-50 275-40x17's,
Powerslot Rotors, Preformance Friction Z rated pads,
Steeda Tir-Ax, Schroth Restraints,
Kuhmo Victoracers(for the track).

97snakedriver · 11-18-1999, 02:58 AM

I love my 4.10s for my Cobra. Never topped it out, but in theory at least, the 4.10s should increase it by about 10 mph.

For a GT, 3.73s seem to be the gear ratio of choice. The GTs aren't quite as rev happy as the Cobras.

------------------
'97 Cobra, K&N, Flowmaster, subframes, 4.10 gears, Steeda Tri-Ax shifter, Steeda G-Trac 3, Cobra R wheels w/ Goodyear F1s

My Ride

kbuckman · 11-19-1999, 07:16 PM

Sean Hyland from SHM is the leader in 4.6 parts these days, though FRP is catching up. I guess he has tested a lo tof 4.6 engines and said 3:73's are optimal for the SOHC and 4:10's are optimal for the DOHC. I have 4:10's in right now and am considering going to 4:30's before the spring because it is still a little sluggish to about 2000 rpm.

------------------
1996 Cobra
FMS 4:10 gears
Flowmaster exhaust
Pro-M 77 MAF
ASP Underdrive Pulleys
62 mm Throttle Body
Cobra R rims
Steeda Tri-Ax shifter
JET chip
Eibach Lowering Kit
Steeda Upper and Lower Control Arms
Steeda X-Pipe
12.88@~107
1.95 60 footer

11-17-1999, 08:44 PM	#1
95GTS Git jiggy Join Date: Oct 1999 Location: MO USA Posts: 865	3.73 gears Will these gears hurt my top end or pretty much spread out the power band thru the revs? I know that the 4.6 Has alot of it's power at the higher revs. Just curious. I've been told these are the best gears for a 5-speed that's a daily driver/track participant. Thanks a lot. ------------------ 1996 Mustang GTS [This message has been edited by 96GTS (edited 11-17-1999).]

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11-17-1999, 08:49 PM	#2
95GTS Git jiggy Join Date: Oct 1999 Location: MO USA Posts: 865	l ------------------ 1996 Mustang GTS All stock (not for long) 15.4 @ 94.4 mph (1/4 mi.)

11-18-1999, 12:14 AM	#3
Danbo Registered Member Join Date: Jul 1999 Location: baltimore Posts: 99	I've tried both 3.55 and 3.73's in my Cobra. I think they are both good choices. I prefer the 3.73's. They won't hurt your top end at all. The way a stock Mustang is geared you would 600+hp to pull 5th gear to redline. You can calculate the change in RPM at various speeds in 5th gear with 3.55,3.73 and 4.10's and then decide what you think is best for your application. dan ------------------ '96 Cobra, Steeda G-Trac Stage III Suspension, K&N Filter,77mmPro-M,FMS Ceramic Coated Headers,Bassini-X Pipe, FMS Aluminum driveshaft, FMS 3.73's, Cobra R's , Firestone SZ-50 275-40x17's, Powerslot Rotors, Preformance Friction Z rated pads, Steeda Tir-Ax, Schroth Restraints, Kuhmo Victoracers(for the track).

11-18-1999, 02:58 AM	#4
97snakedriver Registered Member Join Date: May 1999 Location: Blacksburg, VA Posts: 1,526	I love my 4.10s for my Cobra. Never topped it out, but in theory at least, the 4.10s should increase it by about 10 mph. For a GT, 3.73s seem to be the gear ratio of choice. The GTs aren't quite as rev happy as the Cobras. ------------------ '97 Cobra, K&N, Flowmaster, subframes, 4.10 gears, Steeda Tri-Ax shifter, Steeda G-Trac 3, Cobra R wheels w/ Goodyear F1s My Ride

11-19-1999, 07:16 PM	#5
kbuckman Registered Member Join Date: May 1999 Location: Chicago, IL USA Posts: 244	Sean Hyland from SHM is the leader in 4.6 parts these days, though FRP is catching up. I guess he has tested a lo tof 4.6 engines and said 3:73's are optimal for the SOHC and 4:10's are optimal for the DOHC. I have 4:10's in right now and am considering going to 4:30's before the spring because it is still a little sluggish to about 2000 rpm. ------------------ 1996 Cobra FMS 4:10 gears Flowmaster exhaust Pro-M 77 MAF ASP Underdrive Pulleys 62 mm Throttle Body Cobra R rims Steeda Tri-Ax shifter JET chip Eibach Lowering Kit Steeda Upper and Lower Control Arms Steeda X-Pipe 12.88@~107 1.95 60 footer