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That is what I was thinking. Just wanted to make sure I was correct.

So I am building a 408 stroker dart and the differential I got for my 8.75 rear has 4.56 gears in it. I have no desire to run them long term as this is mostly a street car. I have already bought 3.73 gears but part of me is tempted to keep the 4.56 gears infor a little while just to toy around...

Yes I got the 9.5"

I gave most this to dynamic upfront and what I forgot they asked for and then some. They are running a special right now so after shipping it was still $200 less than a local company I was looking at.

Just called dynamic. Price was right so I ordered one. Seemed great to work with. Conerter will flash at 3800 but drive like a 3200. Price seemed very reasonable to me.

I have a local company called Circle D that has a good reputation but before I place an order wanted to see if there are any better suggestions. I am looking for a new converter for a street/mild strip. Car details 72 dart 408 stroker Howars big mama rattler cam (288/296) X heads rpm...

For the record this is going to be primarily street with occasional strip time. Also no tubbing so 255 tires on the back.

So when I was planning my build around my stock 340 I let you guys convince me I to rebuild my 904 instead of the 727 I have to help get the extra hp out of the car. Well the build has changed as I just got a great deal on a 408 stroker so my question is do I stick with the 904 rebuild or do I...

Yea car is at paint and body shop now. I am thinking I should have him roll the lip to be safe.

Thank you. That is the exact info I was looking for. I want to run 255 tires and 8" rim. Just not sure how large a rim I want. Part of me likes the low profile look and part of me likes the 15" rim with lots of tire look. Also did you roll your lip?

So you all have convincede to go with my 904. What all needs to be done to it to hold up to 350-400hp?

So quick question for those that have made this swap. If I put the 1/2" spring relocators on what size tires can I fit and what backspacing for a 72 swinger. I am going to a swap meet in 2 weeks and if I run into a deal on the wheels I want I would like to know they will fit right.

Well I just bought one from a local salvage yard for $150. I already have an A body 8.75 but the 489 housing has 456 gears and I really like the idea of 4 wheel disc brakes and the 5 x 4.5 bolt pattern. They had 3 explores there and all 3 were different tags. One was 3 73, one was 4 10, and...

So here is my dilemma. I have an A body 8.75 rear and 489 sure grip that I bought for my dart build. Come to find out the pumpkin has 4.56 gears. Now I have read the entire thread about the swap out to 8.8 off an exploder. I like this idea because it gives me the BBP and disc brakes along with...

If I go with the 904 will I still need a mini starter to have room for my dougs headers?

Thank you all for all the help. You all have me really reconsidering the 727. The 727 was suposibly rebuilt with a "small" stall but I have no idea what shape the 727 is actually in and was gonna have someone open it up and look it over. Now I am thinking sell the 727 and just use the 904.

Kind of what I was thinking.

What should I expect to pay for all this.

Has a 904 in it now but putting a 727 with small stall in. Building the car now. Car info 72 dart 68 340 10.5/1 comp. X heads Xe268 cam Air Gapper intake Have not bought a carb yet but 750 dp most likely Dougs headers Would like to run mid to high 12s but not stressing that. Mostly a street...

so I picked up a 489 case with sure grip out of a 2nd generation camero my dad bought. The car was a drag project that had a mopar rear end. Best part is I got it for free 90 free. Sadly it has 4.56 gears in it. The gears look to be new or close to it. I have 2 questions 1. How hard is it...