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So, I'm installing TTI Shorty headers and extension pipes in my Dart....got tired of the long tubes dragging the ground. But I'm running into issues. I bought the TTI linkage adapter for my column shifter to clear, and it works. However, it seems my kickdown linkage is set too far off the trans...

When going WOT at highway speeds, the car drops out of overdrive and accelerates nicely in Drive, but will not kick down to 2nd gear. It WILL kick down to 2nd if I'm driving at lower speeds (40-ish) and stand on it. Is the 518 set up to only drop one gear? (OD to D, or D to 2nd) Otherwise it...

Ever since I rebuilt my 8.25 axle the pinion seal has leaked. At first I thought I just over filled it, but it just keeps seeping until it's low. Most likely I managed to damage the new seal during assembly, so I'm going to toss a new seal on it. My question: I stopped by O'Reilly and picked...

So, long ago it was decided that my 8.25 would get a nice diff girdle cover to help strengthen everything up. I purchased an LPW back when I thought I was going to to do the work, but things came up and I got delayed almost a year. Now, when I finally went to put it in, I discovered all kinds...

Well, it started in this thread: http://www.forabodiesonly.com/mopar/showthread.php?t=153229 But my modified 8.25 axle is finally back under the car. It has 1994 Jeep brakes, a 29 spline Dakota Trak-Lock, Dutchman Performance hybrid axles (thanks to Cass over at Dr. Diff). We ran it on jack...

Has anyone used an LPW Ultimate-10 Diff Cover on their 8.25 axle? I tried to install mine tonight and came across two problems: 1) The cover hits the adjuster locking bolts. I will need to clearance the cover just to get it to sit on the housing properly. 2) The cap reinforcing feet on the...

OK, I have been reading the threads and how-to articles on setting up the rear end. I think I have it down. But I have a question on the shims themselves. People are talking shim depths like .020, .030, etc. When we took my 8.25 apart, we found a .068 shim under the inside pinion bearing race...

When converting from one ratio (2.45) to another (3.55) is the old pinion depth shim even relevant? I ordered a complete rebuild kit from Motive Gear, and there is a pack of shims included, but all of them combined aren't as thick as the ONE that I took out. The original is unusable because it...

I haven't seen anyone else post or talk about having done the mod, so here are the hybrid axles I ordered to use a 29 spline late model carrier in my 8.25 axle. It will require the larger late model C-clips, and when ordered it is important to know what vehicle the carrier is from. Apparently...

I am currently in the process of rebuilding/upgrading the 8.25 in my Dart. Already planned: LPW Diff Cover Jeep Disc Brakes Late Model Trak-loc Aftermarket 29 spline axles Upgrading from 2.45 to 3.55 gears Should I bother welding the axle tubes to the diff housing? The car is only about...

I am rebuilding an 8.25 rear axle with a Motive Gear rebuild kit. It currently is a 2.45 gear set and carrier. I have a lightly used set of 3.55s from a 2004 Dakota, I also have a late model (29 spline) carrier that is brand new for next to nothing. See thread here...

Finally got the last part of my mechanical stuff under way. I plan to keep my 8.25 since the 360 in the Dart is only in the 350-380hp dept. I have been collecting parts for a while, and then was busy and just never got around to it. Since it's 100+ degrees here in Texas and I will NOT be driving...

I am finally getting ready to rebuild and upgrade the 8.25 in the Dart. Below is a list of what I am already planning to do to it (don't talk me out of it, I already have the parts). I have never worked on a car rear end (just big stuff on Class 8 trucks) but the theory is the same. Also, a...

It took me forever, but I've finally got off my butt and gotten the major parts for starting my axle build. The only thing I lack are the misc brake parts, all readily available from the parts store, and the axles themselves. I'm going to wait to order to place the order with Moser until I...

I am getting the parts together for my rear axle rebuild on the Dart. Are there any kits I should stay away from due to quality problems? I was going to get one from Summit, but wanted to make sure there weren't any "bad" ones I should avoid. It's an 8 1/4 axle that will be getting a new...

Does anyone know what the actual length of the axles are for a '75 Dart sport 8.25 axle? Are they equal length, or are they different? I will be rebuilding my 8.25 in the near future, but I am using a new 97-up 29 spline Sure Grip. I am assuming I will need to have Moser sut me a set of custom...

My 75 Dart Sport is currently a column shift car. I have the center console and shifter assembly (as well as steering column) to convert to a floorshift car. My problem is that I have a 518 OD in my car now, and it does NOT have the provisions for the floor shift linkages like a 727 because...

Background: My car is currently a column shift automatic. I have a factory center console/floor shifter, and a floor shift steering column to go in it. My recently discovered issue is that my 518 will not work with factory A-body floor shifter. Since it was never used in a floor shift...

I am needing to find out what size fitings are needed for the trans cooler lines. 518s use 3/8, so that is what I am upgrading to in the Dart. My B&M cooler has 1/2 NPT female, but I don't know what threads in the case of a 518 or what I need for the transmission radiator tank cooler. Am I...

OK, here is my dilemma: My car is originally a 318/904 column shift combo. Now it is a 360/518 combo. I have aquired a floorshift steering column and center console with shifter, but no linkage to the trans. Is there any difference between the 904 and 727 floor sift linkages, or are they...

Can someone tell me how far a dipstick should stick down in the trans pan on a 727/518? The dipstick on my 518 is barely longer than the dipstick tube. Is this normal?

I picked my car up from Miller Performance yesterday. Man what a difference!! Since I have the 2.45 gears I can't use the OD yet, but the trans is great. I'll wire the OD up sometime before I get the axle rebuilt (with 3.91 gears).:D Pictures will be posted soon. I found it interesting that he...

Ok, finally getting ready to remove/build my 904. I have heard the Summit aluminum pans are crap, and that I shouldn't bother with them. Is this true? I don't see how they can be that bad, but then again.... Summit Pan: $102 Mopar Pan: $162 I don't like to waste money unnecessarily, but...

OK, I know the 8.25 axle has been around since the dawn of time (well, early 70's...close enough). I am also aware they changed internals after '96. I have read an article or two about taking post '96 axles (which are straight) and cutting/resplining/drilling them for our old type A-body...

OK, I hear alot about putting an A518 in a Dart, and what a pain it is. I am ultimately planning on building my 904, but what about the A500 trans? They seem to have come in alot of the small V8 pickups and Jeeps. Would it feasible (or possible) to put one of these in a Dart, or does it...

Ok, with my 360 making ~380hp, I am planning on rebuilding my 904 to stand up to good street duty, with OCCASIONAL track time (MAYBE 3 times a year). I have been told that it would be better to hunt down a 999 since it has extra clutches in it. Is it worth it? I have had many people tell me a...

Here's the question: I'm planning on putting 3.55s in my Dart, and a friend is replacing the 3.55s in his dads 2001 Dak V6 with 3.90s. I know there are differences in the carriers & spline, but are the gear sets themselves the same between the pre-96 and post-96 8.25" rear ends?

Does anyone know if there is a rear end girdle cover for the 8 1/4?? Just wondering.. Thanks

Talked to Moser Engineering today. They quoted me $235 for custom cut, non tapered axles for. Problem is, I need a boat load of specs, and I my rear end is still car intact under the car (for now). Has anyone had a set custom cut? Just trying to cut down on research time, if anyone has...

OK..first off, my Dart is street car. The first words out of my friends mouth when I told him I had a mild 360 with a 904 and 8.25" were "That drivelines got to go." Then he preceeded to tell me how it was required to have an 8.75 rear for easy center changes when I go to the track...