4:56s too much gear for me?
02-21-2010, 09:33 AM
#1
10 Second Club
Thread Starter
iTrader: (11)
Join Date: Apr 2009
Location: Lake of the Ozarks, MO
Posts: 2,284
Likes: 0
Received 1 Like
on
1 Post
4:56s too much gear for me? Im about to order my rearend. I was going to get a Spooled 12 bolt with 4:56s. Narrow it a bit.
MS4 Cam 6 Speed 425 to the wheels. With a 28in tire Im worried that I might now have enough power to turn that big monster? Im also looking at loosing a bit of weight it the car, drag breaks, kmember, and little stuff under the hood.
Should I stick with these or go with 4:30s and a 26 or 27in tire?
MS4 Cam 6 Speed 425 to the wheels. With a 28in tire Im worried that I might now have enough power to turn that big monster? Im also looking at loosing a bit of weight it the car, drag breaks, kmember, and little stuff under the hood.
Should I stick with these or go with 4:30s and a 26 or 27in tire?
02-21-2010, 07:16 PM
#5
Im about to order my rearend. I was going to get a Spooled 12 bolt with 4:56s. Narrow it a bit.
MS4 Cam 6 Speed 425 to the wheels. With a 28in tire Im worried that I might now have enough power to turn that big monster? Im also looking at loosing a bit of weight it the car, drag breaks, kmember, and little stuff under the hood.
Should I stick with these or go with 4:30s and a 26 or 27in tire?
MS4 Cam 6 Speed 425 to the wheels. With a 28in tire Im worried that I might now have enough power to turn that big monster? Im also looking at loosing a bit of weight it the car, drag breaks, kmember, and little stuff under the hood.
Should I stick with these or go with 4:30s and a 26 or 27in tire?
Trending Topics
02-22-2010, 02:03 PM
#13
n/a car I'd put 4.56 or 4.71 in it with a 28 inch tire, all day long. If the car's lighter, light enough so it will need the rpm range to get thru the traps in 4th I'd run the 4.56, but if the car is heavy, 3600+ I'd put 4.71, or whatever the next step up from a 4.56 is for a 12 bolt, and feel good about it. If you put heads on and find you're running out of gear, then change it.
With an M6 in the car... you can really get away with a TON of gear on the street, and still have it be livable.... so take advantage! Just remember, that tranny isn't bullitproof and will sooner or later give up the ghost in one way or another.
With an M6 in the car... you can really get away with a TON of gear on the street, and still have it be livable.... so take advantage! Just remember, that tranny isn't bullitproof and will sooner or later give up the ghost in one way or another.
02-22-2010, 06:24 PM
#14
You need to answer a few questions before we can start to figure the optimal gear/tire combo.
What does the trap (or the expectation)?
What does the power band look like up top?
How much and when does power drop off?
What's the anticipated shift rpm?
How much tire do you need to hook?
What does the trap (or the expectation)?
What does the power band look like up top?
How much and when does power drop off?
What's the anticipated shift rpm?
How much tire do you need to hook?
02-22-2010, 07:07 PM
#15
10 Second Club
Thread Starter
iTrader: (11)
Join Date: Apr 2009
Location: Lake of the Ozarks, MO
Posts: 2,284
Likes: 0
Received 1 Like
on
1 Post
Last time out on a 315/35/17 Mickey T..25.5 or 26in tire
Car went 12.2s-3s at 118 spining all of first all of second and most of third if I powershifted..
That was with a 4:10 gear also
Shifted at 6800
Anybody that knows or has tuned a car with an MS4 should know its all top end cam..
Peaks about 66 or 67 I think..Id have to look at dyno sheets..
Too many say 4:56 or so with a 28in stiff wall..thats what Im doing, popular set up for engine mods..provin..why not!
Car went 12.2s-3s at 118 spining all of first all of second and most of third if I powershifted..
That was with a 4:10 gear also
Shifted at 6800
Anybody that knows or has tuned a car with an MS4 should know its all top end cam..
Peaks about 66 or 67 I think..Id have to look at dyno sheets..
Too many say 4:56 or so with a 28in stiff wall..thats what Im doing, popular set up for engine mods..provin..why not!
02-22-2010, 08:53 PM
#16
10 Second Club
iTrader: (2)
Join Date: Aug 2005
Location: Ottawa, IL
Posts: 956
Likes: 0
Received 0 Likes
on
0 Posts
I would definately go with 4.56s. I have 4.30s and a 28" tire. My car traps high 121s and I have plenty of rpm left when I go through the traps. I wish I would've gone with 4.56s. I still might swap to them if I can't get the car in the 10s.
