richmond 411's broke again - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

casper sc/1ss/rs · 06-09-2013, 05:35 PM

I ripped my rear out again Friday, I was running richmond 411's I loved the gears but its about the track times from here on, so I need some info from other that are FI that have track time under there belt, im planning on running 138ish mph in a 1/4 mile with my new mods, 134mph in 4th gear was about all the car would do, my goal is to run around 138 give or take in 4th gear, im trying to decide what gear to go back with this time but I don't want to go to high, 411's I believe was hurting my mph alittle at the track because the car was crossing the line right before hitting the rev limiter. Im wanting to cross the line close to the rev limiter but not right before it hits, how much of a difference in mph would 410's be? Remember im just needing a few mph's not much at all, im afraid 391's will mess with my launching but I don't know, if someone is running around that mph in 4th gear what gear are you running? My tire o.d. is 28.8 on the rear. 410's or 391's?? Thanks!!

The Stig · 06-09-2013, 05:48 PM

Don't know the difference, but Richmond states that their gears aren't designed for putting up with the abuse they'd take on a drag strip.

casper sc/1ss/rs · 06-09-2013, 06:04 PM

Who makes a good set?

The Stig · 06-09-2013, 06:13 PM

If you went down to 3.91s you could get the OEM 1LE gears, don't know if you'd need more gear with your setup though.

casper sc/1ss/rs · 06-09-2013, 06:22 PM

Im trying to find out what mph the 391's and 410's will do in 4th gear then I will decide what I think will be better for my set up, we will just say with stock tire size and go from there

The Stig · 06-09-2013, 06:26 PM

What wheels do you have? Lighter wheels would help with your goal too btw

casper sc/1ss/rs · 06-09-2013, 06:29 PM

18' race star

casper sc/1ss/rs · 06-09-2013, 06:31 PM

I don't want to run out of gear the wheels will probably help with the 391's but would still like some numbers first

The Stig · 06-09-2013, 06:34 PM

No I understand no worries. Wish I could give you some numbers though.

Motion427 · 06-09-2013, 07:06 PM

A manual tranny car.If you run the same mph with either gear.
The 3.91 will lower the rpm's about 300rpm less compare to the 4.11.

Irnwkrkev · 06-09-2013, 09:50 PM

There's a link in the sticky under trans/driveline about gear ratios by danner

Edit: here you go

http://f-body.org/gears/

and you'll need this:

The Gear Ratios for a TR6060 (manual) are:
1st: 3.01
2nd: 2.07
3rd: 1.43
4th: 1.00
5th: 0.84
6th: 0.57
R: 3.28

partymn · 06-09-2013, 10:06 PM

3.91 gears, trapping at 138 in 4th gear with a 28.8 inch tire you would be at around 6295 RPM

4.11 gears, trapping at 138 in 4th gear with a 28.8 inch tire you would be at around 6617 RPM

This is the math behind the whole thing, good luck.

Rear end gear ratio = (tire diameter)(rpm) / ((transmission gear ratio)(336)(mph))

The Stig · 06-09-2013, 10:23 PM

Quote:

Originally Posted by partymn

3.91 gears, trapping at 138 in 4th gear with a 28.8 inch tire you would be at around 6295 RPM

4.11 gears, trapping at 138 in 4th gear with a 28.8 inch tire you would be at around 6617 RPM

This is the math behind the whole thing, good luck.

Rear end gear ratio = (tire diameter)(rpm) / ((transmission gear ratio)(336)(mph))

Awesome. Thank you.

From this I'd do the 3.91s as you risk hitting the rev limiter with 4.10s

429 · 06-10-2013, 07:22 AM

Turn your limiter up.

06-09-2013, 05:35 PM	#1
casper sc/1ss/rs Drives: 2011 camaro ss vortech supercharged Join Date: Aug 2011 Location: marion VA. Posts: 524 View My Garage	richmond 411's broke again I ripped my rear out again Friday, I was running richmond 411's I loved the gears but its about the track times from here on, so I need some info from other that are FI that have track time under there belt, im planning on running 138ish mph in a 1/4 mile with my new mods, 134mph in 4th gear was about all the car would do, my goal is to run around 138 give or take in 4th gear, im trying to decide what gear to go back with this time but I don't want to go to high, 411's I believe was hurting my mph alittle at the track because the car was crossing the line right before hitting the rev limiter. Im wanting to cross the line close to the rev limiter but not right before it hits, how much of a difference in mph would 410's be? Remember im just needing a few mph's not much at all, im afraid 391's will mess with my launching but I don't know, if someone is running around that mph in 4th gear what gear are you running? My tire o.d. is 28.8 on the rear. 410's or 391's?? Thanks!!

06-09-2013, 05:48 PM	#2
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	Don't know the difference, but Richmond states that their gears aren't designed for putting up with the abuse they'd take on a drag strip. __________________

06-09-2013, 06:13 PM	#4
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	If you went down to 3.91s you could get the OEM 1LE gears, don't know if you'd need more gear with your setup though. __________________

06-09-2013, 06:26 PM	#6
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	What wheels do you have? Lighter wheels would help with your goal too btw __________________

06-09-2013, 06:34 PM	#9
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	No I understand no worries. Wish I could give you some numbers though. __________________

06-09-2013, 06:04 PM	#3
casper sc/1ss/rs Drives: 2011 camaro ss vortech supercharged Join Date: Aug 2011 Location: marion VA. Posts: 524 View My Garage	Who makes a good set?

06-09-2013, 06:22 PM	#5
casper sc/1ss/rs Drives: 2011 camaro ss vortech supercharged Join Date: Aug 2011 Location: marion VA. Posts: 524 View My Garage	Im trying to find out what mph the 391's and 410's will do in 4th gear then I will decide what I think will be better for my set up, we will just say with stock tire size and go from there

06-09-2013, 06:29 PM	#7
casper sc/1ss/rs Drives: 2011 camaro ss vortech supercharged Join Date: Aug 2011 Location: marion VA. Posts: 524 View My Garage	18' race star

06-09-2013, 06:31 PM	#8
casper sc/1ss/rs Drives: 2011 camaro ss vortech supercharged Join Date: Aug 2011 Location: marion VA. Posts: 524 View My Garage	I don't want to run out of gear the wheels will probably help with the 391's but would still like some numbers first

06-09-2013, 07:06 PM	#10
Motion427 Account Suspended Drives: 2010 2SS/RS Red Jewel L99 Join Date: Jun 2011 Location: NB,Canada Posts: 834	A manual tranny car.If you run the same mph with either gear. The 3.91 will lower the rpm's about 300rpm less compare to the 4.11.

06-09-2013, 09:50 PM	#11
Irnwkrkev Drives: 2011 SS/RS LS3 Join Date: Oct 2010 Location: Miami Posts: 528	There's a link in the sticky under trans/driveline about gear ratios by danner Edit: here you go http://f-body.org/gears/ and you'll need this: The Gear Ratios for a TR6060 (manual) are: 1st: 3.01 2nd: 2.07 3rd: 1.43 4th: 1.00 5th: 0.84 6th: 0.57 R: 3.28 Last edited by Irnwkrkev; 06-09-2013 at 10:05 PM.

06-09-2013, 10:06 PM	#12
partymn Drives: 2014 1ss 1LE Join Date: Sep 2011 Location: Goose Creek, SC Posts: 878 View My Garage	3.91 gears, trapping at 138 in 4th gear with a 28.8 inch tire you would be at around 6295 RPM 4.11 gears, trapping at 138 in 4th gear with a 28.8 inch tire you would be at around 6617 RPM This is the math behind the whole thing, good luck. Rear end gear ratio = (tire diameter)(rpm) / ((transmission gear ratio)(336)(mph)) __________________ 2014 1SS 1LE, bone stock for now.

06-10-2013, 07:22 AM	#14
429 Account Suspended Drives: 2010 camaro ss Join Date: Nov 2012 Location: Richmond Hill, GA Posts: 726	Turn your limiter up.