Quote:
Originally Posted by 86TOYO2k17
The autos are pretty beefy.
A960E is rated at 220ft lbs. SSP valve body should be good for 240ft lbs, ssp clutch pack 400ft lbs. oil cooler helps a lot too not for overall rating but overall reliability.
AZ6 is rated at 180 ft lbs. but with a clutch upgrade it seems to be between about 200-220ft lbs.
Needless to say us auto boys aren’t too concerned with the trans. Just the rods which seems to have decent reliability at about 220-240ft lbs.
And the longer stretched gears like you mentioned would pair well with a turbo.
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I believe the AZ6 transmission is rated at 163 tq. The clutch might be more like 180. I'm at a bar of boost on E85 with an Exedy stage 1. No issues so far. I mean, I have 5th gear grind from the previous owner. I think the transmission can obviously hold more, but I don't know over the life of the car. We will see.
Johan who sold me his Harrop kit, said he was switching to a turbo because he blew his auto trans. Autos with a torque converter already have smoother engagement, but he wanted a turbo for even smoother engagement hoping it would last longer. I don't know. Anecdotal. Maybe I was going off that, and maybe I was going off reports that the auto had problems handling boost. Maybe this and other comments. I don't know, but you are right about the autos holding more.