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Unless your pumping big horse power to the rear wheels I'd look for a sure grip for the 8.25.

Here's a chart.

x2

Try a tractor supply store, lf there are any around you. I got mine at a locally owned industrial supply shop.

I got them long enough so I could run them over by the frame rail rather then along side the engine.

I assumed it was slipped over the hose before crimping the ends on. I didn't see the guy make them. One was 7' long and the other was 5'. I think I could have got buy with the 7' one made to 6'.

Here's what I ran for tranny lines, hydraulic hose with a heat shield over it. Worked really good.

Here's a couple pictures of my 8 3/4 with the 7 1/4 stuff on it. But then again this is bbp not sbp.

I switched my 8 3/4 to big bolt pattern and used the brakes and backing plates from the 7 1/4 that was under my 74 dart and every thing bolted right in place.

Drive shaft in or out? With it out and the front end jacked in the air it is possible for it to leak.

I did the same thing, worked great.

A lot of guys beef up the 904, they're a little lighter then the 727. Nothing wrong with a 727 though. One thing the two of them use different length drive lines. I'm going with a 904 but that's because that's what I have and I don't want the expense of modifying my drive line.

Bought my BBP axles for my 8 3/4 from him. Had the same experience great guy to deal with!

I used the backing plates and brake drums off of a 7.25 on my 8.75 and they bolted right up. Here's a couple of pictures.

You'll need to change the drive line, parking brake should hook up okay I believe.

I see he's selling them for $300 now, I must have paid $285 not $185 for them.

Was about a year ago, came with the green barring already on just had to bolt them in. I actually took the backing plates off of a bbp 7 1/4 rear end that was in the dart. They bolted right up and where bigger brakes then the 8 3/4 had on it. Also came with the wheel studs in the axle.

I bought new axles from Dr. Diff, came with the barrings installed for if I remember right $185.00 + shipping. If you want to see what they look like click on the link below my name there is a picture of them in that thread.

3.23's but want to go to 3.73's of 3.55's

Found it. This says it was in 73s Chrysler 8 3/4" Rear Axle & Swap Information Chrysler Corporation's 8.75" rear axle assembly first appeared in 1957. The measurement refers to the 8-3/4" diameter ring gear. This gear, which is turned by the pinion gear, changes the direction of the power...

Thought I read some where that the 8.75 was used through the 1972 model year. After that it was the 8.25. I'm not a 100% on this though.

Mine did that one time, the cable wasn't all the way engaged into the back of the speedometer. I pulled it out then stuck it back in and it worked fine after that.

When we had one cut down they wanted us to mesure center u joint cap to cap and allow about 3/4 to a inch of play at the tranny.

On my 72 the small diameter is to the front and on my sons 71 it to the back. Now that should confuse you! LOL! My guess is is doesn't make a difference.

We used 3/8 but I think stock is 5/16. We're going to make a set for my dart and I'll use the 5/16 so I can use the same fittings. We only used the 3/8 because that was what we thought the lines where. Didn't take long to figure out that wasn't right.

I think the V8 driveline is more heavy duty then the 6cyl. one. If it was a 904 car and your keeping it 904 they might be the same length.

We bought a bender at Harbor Freight for about 25 bucks. Used aluminum lines and they came out great.

Sounds like your set now!

It can be converted (I checked into it and it's a little pricey), but what I'm doing is I bought a 72 904 and am going to overhaul it. Then I can use the stall speed converter that a bought 2 years ago before I found out my tranny was the lock up type.

Look at your old converter and make sure it doesn't say lock up on it. I did the same thing and the problem was mine is a 76 tranny with a lock up converter and the splines or something are different.