456 gears with m6
Thread Starter
On The Tree
Joined: Aug 2003
Posts: 185
Likes: 3
From: Sheridan,Ar.
456 gears with m6 I've ran a few 6sped cars with 410/s in the past and was thinking about trying 456s , Are 456's still streetable and what would the rpm be at 70mph with factory 26'tires?
Teching In
Joined: Nov 2010
Posts: 3
Likes: 0
From: Detroit MI
Joined: Apr 2006
Posts: 3,909
Likes: 1,158
From: Grand Rapids, Michigan
I have 4.30s in my Firebird. Back when it was on the road in it's previous incarnation, I had no issues with streetability. I wish I'd went with 4.56s. Remember, our cars have a .50 overdrive in 6th, which gives you an effective 2.28 gear ratio. The only thing I have to ask is, do you have a stock 7.5" still? Because you'll break those gears really quick if so. The pinion will be so tiny, you'll have hardly any tooth engagement. I have a Strange S60, so I'm not concerned about strength, lol.
Thread Starter
On The Tree
Joined: Aug 2003
Posts: 185
Likes: 3
From: Sheridan,Ar.
I have 4.30s in my Firebird. Back when it was on the road in it's previous incarnation, I had no issues with streetability. I wish I'd went with 4.56s. Remember, our cars have a .50 overdrive in 6th, which gives you an effective 2.28 gear ratio. The only thing I have to ask is, do you have a stock 7.5" still? Because you'll break those gears really quick if so. The pinion will be so tiny, you'll have hardly any tooth engagement. I have a Strange S60, so I'm not concerned about strength, lol.
