Gears for roll racing? (I need some explanation)
#1
TECH Regular
Thread Starter
Join Date: Jun 2006
Location: Alamo Heights, Texas
Posts: 440
Likes: 0
Received 0 Likes
on
0 Posts
Gears for roll racing? (I need some explanation)
Not huge into track racing, in fact I doubt much racing will be going on with the car in the first place.. I modify it mostly for the fun of driving it. I have 3.23 gears in a 6spd right now(Car had a 9 inch before I got it that was sold out and swapped in a 3.23 from an auto).
Car is full bolt on's with a built t-56 atm. Mods within the next few months will be LS6stage 1ish heads from tsp(most likely, unless I run into another deal) and a large cam(similar to ms4), and a 150 wet shot(more of a back up thing than a use all the time thing).
I would be perfectly fine going 4.10's or hell, even 4.30's if it would give me the most performance on the highway. I'm hearing that gear changes don't really help much at the track from reading the gear sticky. What is the real deal on what changing gear ratio's do to your car? I'm confused, and it's driving me nuts.
Car is full bolt on's with a built t-56 atm. Mods within the next few months will be LS6stage 1ish heads from tsp(most likely, unless I run into another deal) and a large cam(similar to ms4), and a 150 wet shot(more of a back up thing than a use all the time thing).
I would be perfectly fine going 4.10's or hell, even 4.30's if it would give me the most performance on the highway. I'm hearing that gear changes don't really help much at the track from reading the gear sticky. What is the real deal on what changing gear ratio's do to your car? I'm confused, and it's driving me nuts.
#3
Banned
iTrader: (12)
If you go from 3.23's to 4.10 it's going to be a night and day difference. IMO 3.23's in a M6 would suck. I wouldn't go less then 3.73's for a M6. For your roll racing by putting 4.10's in you will reach your shift points a lot faster and have less "RPM" drop in between each gear. If you do a lot of roll racing get them 3.23's out...actually get them swapped out regardless.
#4
All I do is roll race, and I still run stock 3.42's on my 10 bolt. Im putting a decent amount of power down too. 4.10's and your 4th is done at like 120. I had them in there for awhile, and of course they broke. You hit it, and shift, shift, shift and your done. Like elliott said, your hitting your points so fast.
#5
TECH Regular
Thread Starter
Join Date: Jun 2006
Location: Alamo Heights, Texas
Posts: 440
Likes: 0
Received 0 Likes
on
0 Posts
Why don't gears seem to be doing much for people at the track? The obvious answer for what shorter gears do is make the car get up to speed faster, but have less top speed.. why is this not looking to be the actual answer? If it was, wouldn't gears be like the #1 mod for the track(assuming you don't run out of gear and have to shift into something beyond your 1.00:1 ratio. IE. into 5th gear for manuals)
#7
On The Tree
iTrader: (8)
Join Date: Jun 2005
Location: Austin, TX
Posts: 145
Likes: 0
Received 0 Likes
on
0 Posts
Why don't gears seem to be doing much for people at the track? The obvious answer for what shorter gears do is make the car get up to speed faster, but have less top speed.. why is this not looking to be the actual answer? If it was, wouldn't gears be like the #1 mod for the track(assuming you don't run out of gear and have to shift into something beyond your 1.00:1 ratio. IE. into 5th gear for manuals)
I have a similar setup to what you might end up with (bolt-ons, G5x3, gears) and enjoy it. Like mentioned, the engine speed drop between shifts is lower with the gears, which is nice if you go to a bigger cam that moves the power band up.
If you are going to modify it for the fun of driving and/or roll racing, the gears will help, especially going from a 3.23 to 4.10.
Trending Topics
#8
Banned
iTrader: (32)
Join Date: Mar 2005
Location: Fountain Inn, SC
Posts: 1,157
Likes: 0
Received 0 Likes
on
0 Posts
Gears help you get of the line without bogging so bad and to get your 60 foot down some. I run 4.11s and really wish i went with 4.30s or bigger. I went from a 10bolt with 3.42s to 9in with 4.11s and its night and day.
#9
TECH Apprentice
iTrader: (1)
Join Date: Oct 2005
Location: Norwich, NY
Posts: 324
Likes: 0
Received 0 Likes
on
0 Posts
Roll racing I'd say 4.10's. My buddy has 3.73's on his M6 SS and I'd glad I didn't go with them. Not enough. The 4.10's work great. I've raced a few cars starting at 20mph in 2nd gear at 2000 rpm, and my car still pulls like crazy. Plus it's awesome dropping it into 2nd at 50 and lighting up the tires!
Only reason I can see with lower gears making cars slower at the strip is because of traction. Once they hook lower gears will be faster
Only reason I can see with lower gears making cars slower at the strip is because of traction. Once they hook lower gears will be faster
#10
TECH Regular
Thread Starter
Join Date: Jun 2006
Location: Alamo Heights, Texas
Posts: 440
Likes: 0
Received 0 Likes
on
0 Posts
What I was wondering(And I remember trying to do the math for this) is.. I think with a 4.10 gear set, in 5th gear your are still basically at like a 3.42 ratio or so. I forgot how to do the math for it, and I'm not sure if it was ever right in the first place. Is it? what is the equivilant of using 5th with 4.10's? like what gear set + 4th gear = 4.10's + 5th gear?
Does the race really end after 4th gear?
Does the race really end after 4th gear?
#11
On The Tree
iTrader: (8)
Join Date: Jun 2005
Location: Austin, TX
Posts: 145
Likes: 0
Received 0 Likes
on
0 Posts
What I was wondering(And I remember trying to do the math for this) is.. I think with a 4.10 gear set, in 5th gear your are still basically at like a 3.42 ratio or so. I forgot how to do the math for it, and I'm not sure if it was ever right in the first place. Is it? what is the equivilant of using 5th with 4.10's? like what gear set + 4th gear = 4.10's + 5th gear?
Does the race really end after 4th gear?
Does the race really end after 4th gear?
I've attached an Excel spreadsheet that will give you an idea. Play around with it (put in your tire size and rear differential ratio and see what speeds you get at what rpm).
I guess whether the race ends after 4th depends on who you are racing. I wouldn't go much faster because it's too fast for the street, hypothetically speaking.
If you are worried that you'll change gears and not like it, try to drive someone's car with a similar setup.
#12
I would think if you are roll racing 4.10s might be to much only because most of the time when I roll race on the street I hit around 140 before the end of the race. With 4.10s you would have to be in 5th gear to soon and your pull would be slower. I have 3.73s and they do fine but I think 3.90s would be sweet also. If your only racing to 110-115 4.10 would be fine.