4.56 Gears
Thread Starter
Instructor
Joined: Jul 2007
Posts: 236
Likes: 0
From: Mobile Alabama
4.56 Gears
Anyone out there running 4.56 gears - are there any unusual worries in going this low - I have a 95 6 spd and if I'm going to keep I'm wanting more quickness - it currently has 3.45 stock.
Thanks
Thanks
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
They won't work with your carrier. I believe 3.73 or 3.92 is as high as you can go without a complete change out. Check to be sure.
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
You'll be shifting constantly around town. 4.10's are perfect with the 6 spd.
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
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Drifting
Joined: Jan 2002
Posts: 1,663
Likes: 139
From: Vail AZ
I had a 4.56 set in a Cobra kit. The smallblock was a very high-winding engine, but it was still a nuisance to drive. Even though all my favorite things start with a 4, I'd not have a 4.xx gear set again.
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
4.10's are a whole different story in our M6's. With 4.10 in sixth gear, my car is turning 1850 rpms at 70 mph. Two overdrives definately help tame a 4.10 gearset.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Why do you want 4.56?
Lower is not necessarily better. It needs to match up with the power band of the car and what you plan on using it for.
I bet you'll lose time in the 1/4 with 4.56 gears, your gas mileage will suck, freeway driving will be noisy, and around town drivability will include way more shifting or skipping gears.
Lower is not necessarily better. It needs to match up with the power band of the car and what you plan on using it for.
I bet you'll lose time in the 1/4 with 4.56 gears, your gas mileage will suck, freeway driving will be noisy, and around town drivability will include way more shifting or skipping gears.
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
Why do you want 4.56?
Lower is not necessarily better. It needs to match up with the power band of the car and what you plan on using it for.
I bet you'll lose time in the 1/4 with 4.56 gears, your gas mileage will suck, freeway driving will be noisy, and around town drivability will include way more shifting or skipping gears.
Lower is not necessarily better. It needs to match up with the power band of the car and what you plan on using it for.
I bet you'll lose time in the 1/4 with 4.56 gears, your gas mileage will suck, freeway driving will be noisy, and around town drivability will include way more shifting or skipping gears.
Right now in the 1/4 I am just about to run out of 4th gear at the end so the 4.10's are perfect, until I add more power. And then I'll need LESS gear, not more.
I forget the ratio but the new Z06's have a fairly high gear (low numerically) in the rear don't they? Same thing with the Viper I think.
Le Mans Master
Joined: Feb 1999
Posts: 9,916
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
I remember reading years ago that the optimmum drag racing gear is around 10 to 1 (first gear times rearend). With the 700R4/4L60 that would be around a 3.3 rearend ratio. With the stick it would 4.00 gears.
HMMM, someone was pretty darn close years ago.
You have to think what the ratio will go to speed and rpm wise, then how second gear will hit, wether it bogs it down (kinda like the 700r4/4L60 does) or pulls hard.
HMMM, someone was pretty darn close years ago.
You have to think what the ratio will go to speed and rpm wise, then how second gear will hit, wether it bogs it down (kinda like the 700r4/4L60 does) or pulls hard.
Team Owner
Joined: Sep 2003
Posts: 25,360
Likes: 2,729
Everything is relative, the transmission gear, tire dimensions and the rear axle. There's many different answers for you - none are definitive - the only guy who might understand is the "winner" - the guy who lost only knows that either he, the equipment or maybe both ain't gittin' it!!
