The main issue I see with the Circle D 1a is idle rpm. That VVT- 2 cam will likely want to idle around 800-850rpm and it will push against the brakes in gear with a converter as tight as the 1a. Stock coverter stall speed for the A8 is around 2200rpm if I remember correctly, so the 1a is slightly higher. Most NA builds go at least 3600rpm even with a stock cam, but imo a 3200 would work. Imho I think the better cam for your goals and setup would be the VVT-1.
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Originally Posted by gmcvt
This and doesn't the stall to torque ratio play into the picture here when talking about retaining driveability? As much or more so than the ultimate stall speed?
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sure does. I believe the converter OP is talking about is the 10.5" 265mm so it likely has a lower stall torque ratio for less slip down low(tighter) but doesn't hit as hard.
I would call Circle D and ask them their thoughts for sure. I had a 9.5" FTI 3600 soft hit(tighter version) in my 4th gen and it was great.. perfect for street/strip. I couldn't really go any smaller with the cam or it would of been up against the brakes with it's 850rpm idle. I ran it for a long time when it was stock cam and it still worked really well. jm2c.