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Got my quote from Silversport. $5000. Seems like it’s good, but priced high for a 300’ish hp engine.

Thanks guys. I sent a request to silversport, will message the Texas place next.

Looking to put an overdrive auto into a 73’ Duster and maybe another car. I’m looking for a company that sells everything so I don’t have to do any parts hunting. I know I will have to shorten the driveshaft, but that can be farmed out locally. I don’t want a gear vendor unit. If I’m going to...

car is getting 8 3/4 and engine is estimated between 500+hp with supercharger. shop will build be a new driveshaft.

Never knew the converters were unmerchantable between 904 and 727 trans. figured I would get one with trans as needed for my build.

probably swap a new rear for the car.

So I'm sourcing parts for when the car is going to get stuff thrown at it. I know the 904 is bone stock and instead of trying to upgrade it, was looking to have a beefy 727 slapped in. besides the driveshaft, what parts will need to be swapped/modified to make it work? I do plan to swap from...

ok. Confirmed with a few racers I know that used these rearends in the 1980's-1990's. general consensus from them was this. Based on launches, heavy vehicles, big tires. Stock, these could handle 350-400 hp/tq. upgraded axles, gears and a spool would be good to 450-500 hp/tq before significant...

thanks or the info guys!

good golly, people getting excited about a question. My question was a simple one. Just wondering if there was a hp/torque range for these rearends is all. If they die at 350hp/tq, then say so. I figured it would blow up at real horsepower, but if I can cruise it around before I start going...

Cool. I’m thinking if I decide to go big block, I could always sell it and swap in a 8 3/4 or a ford 8.8 rearend. It would just be nice to know what those little guys can take.

So my 73’ duster just happens to sport the big bolt pattern 8.25 rearend. Now I plan to upgrade the engine to most likely a big block with a torque factor of ‘ridiculous’. These are not 8 3/4-Dana 50 rears, so I’m sure their power-to-survival rate is much lower. So my question is, how much power...

There is a reputable source here in my erea that builds rearends, so I would probably use them. They have build a bunch of rearends for locals and had no problems with them.

This is my first time posting a question here in the tech section, so hi to all and hope to learn something. Just picked up a 1970 dart 8 3/4 rearend that was pretty much fresh and ready to go, only problem was that the big bolt adaptor I was going to use won't work with the wheels I have. I...

I got this ring and pinion in a parts deal and wanted to verify it is for an a-body 7 1/4 rearend.It measures about 7 inches across and looks to be a factory part. Here are some pictures for iding it. Thanks for your help guys.