Factory high stall converter

mshred said

Yes, that I know. I am looking at a 340 converter, as the cam grinder suggested 2500 or more stall speed, and there is one local to me for a decent deal I thought might be worth trying.

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If it's going behind a stock-stroke 340, neither (there were 2 factory V8 TC sizes) will stall near 2500. I have a factory 11" 904 TC which is the smaller thus higher stall of the 2 and it barely hit 2200 behind a warmed-up, small-cammed 10.5:1 360. IMO your only option to get 2500+ with a 340 is to go aftermarket. If it's a stroker then it might have the grunt to get there with a stock 11" TC.