Turbo 400

J Kuchel · 11-19-2008, 07:31 PM

Who makes the best 2.75 first gear set for a turbo 400? How much can a car pickup in et?

trmnatr · 11-19-2008, 07:36 PM

Quote:

Originally Posted by J Kuchel

Who makes the best 2.75 first gear set for a turbo 400? How much can a car pickup in et?

I was looking at the samething but my question is how much power can they handle?

Alan Roehrich · 11-19-2008, 08:11 PM

How much you'd pick up depends upon a lot of factors, I'd have to know a lot about your combination and how well it performs now. ATI makes a good set, so does Kilgore.

Tom Goldman · 11-20-2008, 10:58 AM

The ATI 2.75 aluminum carrier gearset I have in my stocker has been in too many cars to count. .....Before I put it in the AMX it was in a 3400# S/ST car with a brake! ....It must have well over 1000 passes on it. ......Not as trick as Kilgores stuff tho. .....Tom

Dave Goob Cook · 11-20-2008, 01:02 PM

Could slow you down too.....

I went the other way with the Kilgore 2.10/1.40 set and it is quicker than a 'glide, or the stock 2.48/1.48 gearset. It is not any of the trick light stuff.

Sometimes reducing the speed at which you accelerate rotating mass can take less parasitic loss and improve your ET. Usually that would be when you have plenty of HP and torque multiplication from your converter.

Brian Oakes · 11-23-2008, 11:34 AM

I have a 275 gear set, $250.00 plus shipping.

Brian

oakes2074@hotmail.com

bobby · 11-24-2008, 08:25 AM

Quote:

Originally Posted by Dave Goob Cook

Could slow you down too.....

I went the other way with the Kilgore 2.10/1.40 set and it is quicker than a 'glide, or the stock 2.48/1.48 gearset. It is not any of the trick light stuff.

Sometimes reducing the speed at which you accelerate rotating mass can take less parasitic loss and improve your ET. Usually that would be when you have plenty of HP and torque multiplication from your converter.

I believe that. I went to a 4.10 gear from a 3.90 and slowed down. Even the 60' was about .02 slower. going back to a 3.90 when the wallet gets a little fatter, LOL.

Dick Butler · 11-24-2008, 12:22 PM

Bobby, Was the testing Back to Back same track and day? If the track will hold the 4.10 it should be quicker in 60 and et unless running out of RPM and running flat. The fact you quote a slower 60 worries me about the test ..... Tried a 2.75 versus a 2.48 trans back to back runs picked up et with MY way of driving. Picked up more by leaning on the convertor also after that... Shifting later to 2nd also helped to a point. I needed to retest the 2.48 with all the later facts too to be sure I couldnt make it better with convertor torque.

bobby · 11-24-2008, 02:29 PM

No, but the weather conditions were close (yea, I know, close only counts in horseshoes and handgrenades) They don't change a whole lot in south Texas. Kinda worries me to. But being a Pontiac powered Pontiac, seems to run out of torque. and horsepower. doesn't like 1/4 mile anymore.

Dick Butler · 11-24-2008, 03:56 PM

I was lucky I had my kids running at all the same tracks too. They didnt like to change stuff so they made an unchanged run and I made a change. If I gained I could also judge for others or the kids ets.
Good Luck. Sounds like the pontiac thing of low end torque may be the real answer..

11-19-2008, 07:31 PM	#1
J Kuchel Banned Join Date: Apr 2005 Location: Sterling,Illinois Posts: 111 Likes: 0 Liked 0 Times in 0 Posts	Turbo 400 Who makes the best 2.75 first gear set for a turbo 400? How much can a car pickup in et?

11-19-2008, 08:11 PM	#3
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: Turbo 400 How much you'd pick up depends upon a lot of factors, I'd have to know a lot about your combination and how well it performs now. ATI makes a good set, so does Kilgore. __________________ Alan Roehrich 212A G/S

11-20-2008, 10:58 AM	#4
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,474 Likes: 885 Liked 859 Times in 234 Posts	Re: Turbo 400 The ATI 2.75 aluminum carrier gearset I have in my stocker has been in too many cars to count. .....Before I put it in the AMX it was in a 3400# S/ST car with a brake! ....It must have well over 1000 passes on it. ......Not as trick as Kilgores stuff tho. .....Tom __________________ Tom Goldman 1500 SG , 1506 STK

11-20-2008, 01:02 PM	#5
Dave Goob Cook Member Join Date: Dec 2006 Location: Indy Posts: 422 Likes: 0 Liked 0 Times in 0 Posts	Re: Turbo 400 Could slow you down too..... I went the other way with the Kilgore 2.10/1.40 set and it is quicker than a 'glide, or the stock 2.48/1.48 gearset. It is not any of the trick light stuff. Sometimes reducing the speed at which you accelerate rotating mass can take less parasitic loss and improve your ET. Usually that would be when you have plenty of HP and torque multiplication from your converter. __________________ "Despite the high cost of living, it remains popular." Dave Cook NHRA N375

11-23-2008, 11:34 AM	#6
Brian Oakes Senior Member Join Date: Apr 2004 Posts: 570 Likes: 2 Liked 408 Times in 115 Posts	Re: Turbo 400 I have a 275 gear set, $250.00 plus shipping. Brian oakes2074@hotmail.com

11-24-2008, 12:22 PM	#8
Dick Butler VIP Member Join Date: Oct 2002 Location: Richmond Indiana Posts: 1,196 Likes: 5 Liked 32 Times in 19 Posts	Re: Turbo 400 Bobby, Was the testing Back to Back same track and day? If the track will hold the 4.10 it should be quicker in 60 and et unless running out of RPM and running flat. The fact you quote a slower 60 worries me about the test ..... Tried a 2.75 versus a 2.48 trans back to back runs picked up et with MY way of driving. Picked up more by leaning on the convertor also after that... Shifting later to 2nd also helped to a point. I needed to retest the 2.48 with all the later facts too to be sure I couldnt make it better with convertor torque.

11-24-2008, 02:29 PM	#9
bobby Member Join Date: Jun 2008 Location: League City, Texas Posts: 243 Likes: 0 Liked 0 Times in 0 Posts	Re: Turbo 400 No, but the weather conditions were close (yea, I know, close only counts in horseshoes and handgrenades) They don't change a whole lot in south Texas. Kinda worries me to. But being a Pontiac powered Pontiac, seems to run out of torque. and horsepower. doesn't like 1/4 mile anymore. __________________ Next time wave all of your fingers at me.

11-24-2008, 03:56 PM	#10
Dick Butler VIP Member Join Date: Oct 2002 Location: Richmond Indiana Posts: 1,196 Likes: 5 Liked 32 Times in 19 Posts	Re: Turbo 400 I was lucky I had my kids running at all the same tracks too. They didnt like to change stuff so they made an unchanged run and I made a change. If I gained I could also judge for others or the kids ets. Good Luck. Sounds like the pontiac thing of low end torque may be the real answer..