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What transmission takes a bearing retainer that is 5.125? I thought the 4.80 was the largest diameter




That is why I was confused. I figured the 4.80" diameter would be a no-brainer to offer in a blowproof housing. I could see an adapter to go down to the smaller size. But start at 5.125" diamter?

Maybe the 5.125" bearing retainer offers additional strenght? I prefer to run the transmission I have as is. So if there is an adapter to go from 5.125" dia to 4.80" dia then I am OK. I normally deal with stock or close to stock engine builds. The new hemi isn't close to stock and will make power (on paper anyways) up to 7000rpm. Hence my concern.


68 Road Runner (383/4speed, post car w/decor pkg) - Major Project
69 Road Runner w/472 Hemi & 4 speed.
70 Challenger R/T SE EF8 w/ V9J, U - A32 - Major Project
2023 Ford Mach 1