Transmission Question

Reply Subscribe

Thread Tools

Search this Thread

Jul 12, 2004 | 07:04 PM

#11

john kilgore

TECH Apprentice

Joined: Feb 2004

Posts: 376

Likes: 0

ratios

Quote:

Originally Posted by James B.

The TM reduces power by retarding timing during the shift, yes. That's what what is showing up on your logs. What we are really talking about here is the lack of power at the bottom of second gear after the shift due to the huge difference in ratio between the 3.059:1 first gear and 1.63:1 second gear. Every vehicle with a stock converter and a 700R4/4L60E will experience this to some degree.

would 2.66-1.50 be any better?

Jul 12, 2004 | 07:49 PM

#12

James B.

TECH Fanatic

iTrader: (1)

Joined: Mar 2003

Posts: 1,985

Likes: 3

From: 33.91° -117.48°

Quote:

Originally Posted by john kilgore

would 2.66-1.50 be any better?

Yes, those ratios would be better, but as I've mentioned before - changing planetary sets in an electronic trans like a 4L60E or a 4L80E can only work if the Computer (PCM, TCU, etc) that's controlling it can be configured for the gear ratio constants. Without that ability the computer will interpret the ratio difference as slippage and throw codes. If we were talking about a 700R4 or a TH400 then there would be no problem at all.

Jul 15, 2004 | 12:01 AM

#13

1FUNZ71

Thread Starter

14 Second Truck Club

Joined: Jan 2004

Posts: 1,429

Likes: 0

From: Keller, TX

Is the factory tranny cooler sufficent for the trans go and tt3000?

Jul 15, 2004 | 12:44 AM

#14

Hit Man X

TECH Veteran

Joined: Mar 2003

Posts: 4,492

Likes: 0

Quote:

Originally Posted by BluethunderWS6

Is the factory tranny cooler sufficent for the trans go and tt3000?

Spend the extra $50 on a B&M supercooler...

Dec 2, 2004 | 12:51 AM

#15

lxcoupe

TECH Fanatic

iTrader: (9)

Joined: Nov 2004

Posts: 1,127

Likes: 22

From: California

This is a very, very interesting thread for me.

My 2nd gear just went out and I am looking to have my transmission rebuilt.

I sometimes tow a small car (3500lbs) and am curious about transmission upgrades, but I simply cannot do something that will compromise the reliability of the transmission ...

Any suggestions? At this point, I am seriously considering a stock-rebuild.

thanks,
Chris

Dec 2, 2004 | 04:52 AM

#16

sfj

TECH Enthusiast

Joined: Sep 2004

Posts: 592

Likes: 0

From: DFW

would need a tranny cooler and i agree i have a 3k converter and wish i would have went higher so once you get one you will want a bigger one doesnt matter what size you get

. i recommend the GM coolers i have heard they are the easiest to install and you cant go wrong with GM especially if someone has to work on it and starts snoopin around