How about a good Drag race 904 build discussion

You show me ONE 904 that has had a front drum explosion behind an engine like you have. You won't find one. I've been at this for 40+ years and I've never seen or heard of a 904 explosion, EVER. Seen plenty of 727 carnage. The engine needs to turn around 10K rpm where the 904 front drum reaches critical mass. Good luck getting there!

All those "fixes" are a waste of money in a 904. I've stupidly run a 904 for over a year after a rear gear explosion without ever having the front drum exit the case. The same situation that tends to roll sprags.

You plan on driving that thing on the street with an aluminum drum... have fun changing fluid all the time to keep the aluminum grit out of everything. Ever seen a pan of a car with one after 1K street miles? Loaded with crap.

It's a good idea to know what to do when running a TF to protect the trans from damage. I never tend to use a LBA valve body, however, I learned and listened to those that were smarter than me to do what was right when a TF was in a car. Those same guys told me about the waste of money the fancy drums/sprags are for a 904. There are MUCH better places to spend that 900-1000 to gain hp at the tires.

Do you need full body armor if a kid shoots a spit wad at you? That stuff is overkill and totally unnecessary. Same with the better mousetrap parts. They provide no additional safety to you or your car.

I have no dog in the fight when it comes to your wallet, however, I also have not tried to talk you into any "upgraded" parts, when the factory pieces are wholly sufficient... think about that. 1# out of the rotating assembly = 7hp to the rear tires, sure it does. A 904 takes about 25hp to run, so if you use a front drum that is 3.5# lighter it adds HP or takes no hp to run? Ummmm NO. Don't believe everything in a catalog or what a salesperson tells you.

I have no ill will towards you. Hate to see people waste money in a hobby that is inherently expensive. Why punish your wallet.

Pick your parts, pay your money!