2.75 Gear set

J Kuchel · 01-16-2009, 10:33 PM

I am wanting to try a 2.75 gear set in my car but alot of people are saying that they won't live or last very long. The car is a 3200# bbc that has 621 hp and a turbo 400/with brake and a 14/32 tire. I am trying to change my starting line ratio but keep my rpms at the finish line about the same. Someone told me today as long as it is under 700 hp and since the car is not really heavy it should be all right. I just wanted a little more input. Thank you for the help.

Alan Roehrich · 01-16-2009, 10:42 PM

I'm not real sure I'd try the average 2.75 set for a TH 400 in a 600+ HP car, at least not with a transbrake.

J Kuchel · 01-18-2009, 04:05 PM

Quote:

Originally Posted by Alan Roehrich

I'm not real sure I'd try the average 2.75 set for a TH 400 in a 600+ HP car, at least not with a transbrake.

Alan, which ones are living with 600+ HP and a transbrake? I thought some superstock cars are using them? I see that Coan makes 3 different ones, and they have an Extreme Duty one. I hope I can get some answers.

greg fulk · 01-18-2009, 10:10 PM

Just call Jason(Coan) & ask him. He'll let ya know if it /what will live in your car.

01-16-2009, 10:33 PM	#1
J Kuchel Banned Join Date: Apr 2005 Location: Sterling,Illinois Posts: 111 Likes: 0 Liked 0 Times in 0 Posts	2.75 Gear set I am wanting to try a 2.75 gear set in my car but alot of people are saying that they won't live or last very long. The car is a 3200# bbc that has 621 hp and a turbo 400/with brake and a 14/32 tire. I am trying to change my starting line ratio but keep my rpms at the finish line about the same. Someone told me today as long as it is under 700 hp and since the car is not really heavy it should be all right. I just wanted a little more input. Thank you for the help. Last edited by J Kuchel; 01-16-2009 at 10:37 PM.

01-16-2009, 10:42 PM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,105 Likes: 1,564 Liked 1,789 Times in 408 Posts	Re: 2.75 Gear set I'm not real sure I'd try the average 2.75 set for a TH 400 in a 600+ HP car, at least not with a transbrake. __________________ Alan Roehrich 212A G/S

01-18-2009, 10:10 PM	#4
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Re: 2.75 Gear set Just call Jason(Coan) & ask him. He'll let ya know if it /what will live in your car. __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"