At 400+hp, What kills A904s?

'68cuda416 said

I will make it super simple for you....if someone wants to run a 4 speed for the fun factor, great, I have a couple 4 speed cars and they are fun but I don't race them or even have them in very rowdy street strip cars but some do......in regards to the 904 they are a phenomenal transmission and are way faster than a 727 and safer and I dare say that 90 plus percent of the stock eliminator guys that have to technically run a 727 case have 904 guts on the inside as they are obviously lighter which simply equates to a faster overall package. The argument of it can't live over a certain power level is a moot point as every part of these cars can say the same thing and as power increases things need to be modified appropriately.

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WHAT are you making simple for me? I posted recommendations for the op. "I guess I’d like to know how to be kind to this thing and minimize the conditions that kill them until I’ve saved up enough cash for the manual swap." But as RRR posted, "traction and low gears will kill it eventually". Unless the local shop specializes in 904s, it's going to die sooner than later. That would involve about $2k in upgrades. What are your suggestions to make it live? Wait until it does die? When it does you can save some time by quoting my recommendations. Post #35...or he could just contact ProTrans where the prices start at $2K (without valve body) and go up from there. How much did you pay for your Pro Trans 904? $4500? (Insert Final Jeopardy music here, while we wait and see if op comes up with the four speed changeover money before his 904 shucks its guts all over the street).