4.10????

Mustang_Girl_32 · March 30th, 2011, 05:07 PM

So I got these Ford racing 4.10 yesterday. If there true 4.10 is it suppose to show it somewhere on the gears? They r in great shape but I'm so afraid since I'm not clearly seeing 4.10 anywhere that I may have got ripped off??? Please help me out!!

cliffyk · March 30th, 2011, 05:17 PM

Many gear sets are not stamped with the ratio--all you have to do is count the teeth on the ring and pinion, and do the math--4.10 sets are 41 teeth on the ring/10 on the pinion...

Mustang_Girl_32 · March 30th, 2011, 05:19 PM

Ok thanks.

andrewskaggs · March 30th, 2011, 05:20 PM

I believe my FRPP gears had "3 73" stamped on both the ring and the pinion gear. I think it was on the back side of both gears.

asiansensation78 · March 30th, 2011, 06:24 PM

Installing used gears may be a bit more trouble than it's worth though, got any pics of them?

Mustang_Girl_32 · March 30th, 2011, 06:45 PM

Originally Posted by cliffyk

Many gear sets are not stamped with the ratio--all you have to do is count the teeth on the ring and pinion, and do the math--4.10 sets are 41 teeth on the ring/10 on the pinion...

That's what it came out to.

Mustang_Girl_32 · March 30th, 2011, 06:48 PM

Originally Posted by andrewskaggs

I believe my FRPP gears had "3 73" stamped on both the ring and the pinion gear. I think it was on the back side of both gears.

I could see it on the gear. It said it like backwards.10 4 or something.

freefallin2000 · March 30th, 2011, 07:05 PM

I would never buy used gears.

Mustang_Girl_32 · March 30th, 2011, 07:07 PM

They r in great shape and I got a great deal on it all I didn't want to pass it up.

stal94gt · March 30th, 2011, 07:11 PM

there is nothing wrong with used gears as long as the prior owner left the pinion nut on, or used a piece of wood when he slammed it out of the carrier to save the pinion. when gears get old they usualy need to be re lashed anyways so used gears are broken in and work good.

codycat91 · March 30th, 2011, 07:12 PM

My frpp's are stamped. glad you figured it out though

Mineral954GT · March 30th, 2011, 07:54 PM

glad u figured it out as well. Used gears can be be bad but sometimes you have to get what you can he said that they were in good shape. Let us know how feel once you install them. I love my gears I have 4.10's as well every red like is a tree to me lol.

Mustang_Girl_32 · March 30th, 2011, 08:19 PM

Will do!

2SLO2GO · March 30th, 2011, 08:41 PM

Originally Posted by Mustang_Girl_32

They r in great shape and I got a great deal on it all I didn't want to pass it up.

never pass up a good deal!!! used or not. everything can be used to a certain point!

Mustang_Girl_32 · March 30th, 2011, 08:59 PM

That's what I was thinking but I was reading on another mustang forum that not all frpp gears were stamped.even though I figured out mine had 41 teeth and 10 teeth on the other. And were really 4.10s I didn't know if any of u knew about this

BlackPony99 · March 30th, 2011, 09:14 PM

I heard ford racing gears tend to be noisey, but an alum driveline would help lol and if you still don't believe they are 4.10's, install them, turn your tire one full turn and count how many times your driveline rotates (hopefully 4 times + 10% of a turn)

Matt86 · March 31st, 2011, 12:26 AM

Originally Posted by BlackPony99

I heard ford racing gears tend to be noisey, but an alum driveline would help lol and if you still don't believe they are 4.10's, install them, turn your tire one full turn and count how many times your driveline rotates (hopefully 4 times + 10% of a turn)

kinda late in the game at that point.

blkfordsedan · March 31st, 2011, 12:31 AM

They are 4.10:1 ratio. No need to question it. Like cliffyk said ; (# of ring gear teeth divided by # of pinion teeth = gear ratio) That's why its called a gear ratio!

Mustang_Girl_32 · March 31st, 2011, 09:09 AM

Originally Posted by blkfordsedan

They are 4.10:1 ratio. No need to question it. Like cliffyk said ; (# of ring gear teeth divided by # of pinion teeth = gear ratio) That's why its called a gear ratio!

Ya I probably should chill out. The ratio did check out and through code on the pinion and gear matched the box.

blkfordsedan · March 31st, 2011, 12:34 PM

Originally Posted by Mustang_Girl_32

Ya I probably should chill out. The ratio did check out and through code on the pinion and gear matched the box.

Sorry, didn't mean anything by it. It typed out worse than I meant it, LOL.
I was trying to say that it's pointless to jack the car up and try to estimate the exact number of wheel to driveshaft revolutions when you have the gears in front of you and can count the actual teeth!. You're golden! Good luck with the install and don't forget to post results!!!!!

March 30th, 2011, 05:07 PM	#1
Mustang_Girl_32 Hardcore Enthusiast 2003 v6/2003 GT vert Join Date: Jun 2010 Location: Illinois Posts: 1,761 iTrader: 11 reviews	4.10???? So I got these Ford racing 4.10 yesterday. If there true 4.10 is it suppose to show it somewhere on the gears? They r in great shape but I'm so afraid since I'm not clearly seeing 4.10 anywhere that I may have got ripped off??? Please help me out!! __________________ 2003 sonic blue v6- 18" gianna's, straight pipes, 12" DC level 5 with DC 3.5 K 2003 sonic blue GT vert- Bout to be a Procharged P1sc BEAST

March 30th, 2011, 05:17 PM	#2
cliffyk Hardcore Enthusiast Join Date: Feb 2007 Location: Saint Augustine, FL Posts: 1,808 iTrader: 1 reviews	Many gear sets are not stamped with the ratio--all you have to do is count the teeth on the ring and pinion, and do the math--4.10 sets are 41 teeth on the ring/10 on the pinion... __________________ -cliff knight- My Mustang 2003 GT, UPR X, 24lb/h injectors, Magnaflow, 180° stat, PP 70mm TB & plenum, DF Commando, Steeda UDPs, Ralco RZ_flywheel, RAM HDX clutch, WX EFX COPs 3.73s, 262 rwHP/305 lb-ft. Flex-fuel: burns gas and rubber...

March 30th, 2011, 05:19 PM	#3
Mustang_Girl_32 Hardcore Enthusiast 2003 v6/2003 GT vert Join Date: Jun 2010 Location: Illinois Posts: 1,761 iTrader: 11 reviews	Ok thanks. __________________ 2003 sonic blue v6- 18" gianna's, straight pipes, 12" DC level 5 with DC 3.5 K 2003 sonic blue GT vert- Bout to be a Procharged P1sc BEAST

March 30th, 2011, 05:20 PM	#4
andrewskaggs Hardcore Enthusiast 2003 Mustang GT 8.26@83.06 (1/8) Join Date: Apr 2010 Location: Henderson, TN Posts: 1,104 iTrader: 4 reviews	I believe my FRPP gears had "3 73" stamped on both the ring and the pinion gear. I think it was on the back side of both gears. __________________ SLP :: SCT :: Eaton :: Maximum Motorsports :: Baseline Suspensions :: Strange Engineering MM Bracket Racing Crew BAMA Performance Drag Team #1 Project Thread :: YouTube Channel

March 30th, 2011, 06:24 PM	#5
asiansensation78 Too Soon, Junior! 03 GT Vert 15:43.28@25.21 Too many naked bitches in the back Join Date: Jul 2009 Location: Columbus, OH Posts: 3,742 iTrader: 4 reviews	Installing used gears may be a bit more trouble than it's worth though, got any pics of them? __________________ 03 GT - Scrapes on lane markers - Modded 02 Cougar - Able to clear most speed bumps - Some mods 01 Explorer - Parking blocks NOM NOM NOM - Stock Nitrous Switch Panel for sale!

March 30th, 2011, 07:05 PM	#8
freefallin2000 Hardcore Enthusiast 2000 Mustang GT Join Date: Apr 2009 Location: Arizona Posts: 1,479 iTrader: 1 reviews	I would never buy used gears.

March 30th, 2011, 07:07 PM	#9
Mustang_Girl_32 Hardcore Enthusiast 2003 v6/2003 GT vert Join Date: Jun 2010 Location: Illinois Posts: 1,761 iTrader: 11 reviews	They r in great shape and I got a great deal on it all I didn't want to pass it up. __________________ 2003 sonic blue v6- 18" gianna's, straight pipes, 12" DC level 5 with DC 3.5 K 2003 sonic blue GT vert- Bout to be a Procharged P1sc BEAST

March 30th, 2011, 07:11 PM	#10
stal94gt I Post Entirely Way Too Much 2003 mustang v6 ;) slow Join Date: May 2010 Location: eglin afb florida Posts: 10,197 iTrader: 2 reviews	there is nothing wrong with used gears as long as the prior owner left the pinion nut on, or used a piece of wood when he slammed it out of the carrier to save the pinion. when gears get old they usualy need to be re lashed anyways so used gears are broken in and work good.

March 30th, 2011, 07:12 PM	#11
codycat91 MM Fanatic 2003 MUSTANG GT Join Date: Dec 2010 Location: Buffalo, NY Posts: 3,496 iTrader: 10 reviews	My frpp's are stamped. glad you figured it out though __________________ 4v MMR 4.75 Stroker, Teksid block .020 over, 9.27:1CR, Posi Race Ported Eaton 4v MMR Stroker 1000 / Posi Race Ported Eaton Build How To: 2v to 4v COP Swap

March 30th, 2011, 07:54 PM	#12
Mineral954GT Newbie 2001 Ford Mustang GT 13.98@100.00 Join Date: Aug 2010 Location: Broward County Posts: 26 iTrader: 0 reviews	glad u figured it out as well. Used gears can be be bad but sometimes you have to get what you can he said that they were in good shape. Let us know how feel once you install them. I love my gears I have 4.10's as well every red like is a tree to me lol. __________________ Mineral Machine Racing

March 30th, 2011, 08:19 PM	#13
Mustang_Girl_32 Hardcore Enthusiast 2003 v6/2003 GT vert Join Date: Jun 2010 Location: Illinois Posts: 1,761 iTrader: 11 reviews	Will do! __________________ 2003 sonic blue v6- 18" gianna's, straight pipes, 12" DC level 5 with DC 3.5 K 2003 sonic blue GT vert- Bout to be a Procharged P1sc BEAST

March 30th, 2011, 08:59 PM	#15
Mustang_Girl_32 Hardcore Enthusiast 2003 v6/2003 GT vert Join Date: Jun 2010 Location: Illinois Posts: 1,761 iTrader: 11 reviews	That's what I was thinking but I was reading on another mustang forum that not all frpp gears were stamped.even though I figured out mine had 41 teeth and 10 teeth on the other. And were really 4.10s I didn't know if any of u knew about this __________________ 2003 sonic blue v6- 18" gianna's, straight pipes, 12" DC level 5 with DC 3.5 K 2003 sonic blue GT vert- Bout to be a Procharged P1sc BEAST

March 30th, 2011, 09:14 PM	#16
BlackPony99 Regular 1999 Mustang GT Join Date: Apr 2010 Location: Pennsylvania Posts: 50 iTrader: 0 reviews	I heard ford racing gears tend to be noisey, but an alum driveline would help lol and if you still don't believe they are 4.10's, install them, turn your tire one full turn and count how many times your driveline rotates (hopefully 4 times + 10% of a turn)

March 31st, 2011, 12:31 AM	#18
blkfordsedan Enthusiast 2004 Mustang GT Join Date: Dec 2010 Location: Nebraska Posts: 684 iTrader: 0 reviews	They are 4.10:1 ratio. No need to question it. Like cliffyk said ; (# of ring gear teeth divided by # of pinion teeth = gear ratio) That's why its called a gear ratio! __________________ -Brian 2004 GT TR3650, MAC Straight Shot CAI, FRPP 70mm, TFS plenum, catted X-pipe, Pypes Violator polished 304SS cat-back, custom tuned by AM/Bama...... 4.10's - coming soon!

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