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I'd just be swapping out the 3rd member so it should be no problem. Are the u-joints the same?

Current case is a 489, is a 741 compatible?

I do travel the highway often but only long stints (2.5 hours) once/year. I get that the rpm diff is minimal but was just looking for feedback from someone who has a similar setup. I will not be drag racing and want to go with a lower gear because the 3.23 doesn't have that put you in the seat...

That's funny you guys should bring that up. I've been thinking about investing in a tranny jack at HF, as I'll be pulling my tranny too.

After years, I am now serious about changing out my 3.23 rear for a 3.73 or 3.91. I have a gen III 5.7 hemi (360 HP @ 5400 rpm/360 ft-lbs of torque @ 4200 rpm) and five speed with 3.27, 1.98, 1.34, 1, and .68 gear ratios. My rear tires are 26.7 inches tall. I drive the car on the street and...

I'll check them out. Got my car up on a lift tonight and ends up my diff is a 489, not a 741.

Anyone purchase a drop-in third member from justdifferentials.com? They quoted me $1,164 (shipped) for a 741 unit with a sure grip and 3:73s.

So I should disconnect the speedo cable at the back of the speedometer and squeeze powdered graphite down that end of the cable and not in the back of the speedometer.....correct? Just want to make sure I'm reading your response right.

My speedo flutters and makes a ticking sound. I was thinking about disconnecting the cable from the back and shooting in some liquid graphite but I'm worried the black spray from the graphite might come through the backside and stain the face of my speedometer. Any advice would be greatly...

Thanks a mil, greatly appreciated!!

Superdart, sent you a request for a copy a couple weeks ago, did you get it?

What size tires, final gear ratio, and rpms @ 70 mph with the 4.56 gears????

First through fifth gear ratios are 3.27, 1.98, 1.34, 1, and .68. My rear tires are 245/40/18s. I drive the car on the street and highway both and I definitely like to romp on it, as we all probably do(?), from time to time. I also have a stock GenIII hemi rated at 375 hp. I was on the...

Thanks guys!!!

I am currently running 3.23s and am considering going with 3.55 or 3.73s. I have a gen. III 5.7 hemi and a Tremec 5 speed that the prior owner installed. I'm less than 2,000 rpms going 65. Anyone run running this same setup with 3.55 or 3.73s, and if so how do you like them and what are you...

thanks

For all around driveability I'd go with 3.55s.....for flying through the traps quickly you'd want 4.11s or 4.56s.

I have am going to be removing the tranny from my '68 Dart. Should I put a small block of wood between the motor and the firewall so the motor doesn't hit it when it leans back, or is it not going to be an issue? I have a new 5.7 hemi and a Reilly subframe.....not sure if that makes a difference.

Found a really good article written by someone with similar issues. He ended up sending the top cover assembly and rear housing to Liberty's Gears and hasn't had a problem since. Here's a link to the article http://www.w8ji.com/tko_600_shifting_problems.htm. Thanks as always for the speedy...

Anyone else have problems shifting from second to third, under heavy throttle, with their Tremec five speed?