Shifters for SP400's are hard to find. Could you use an aftermarket Turbo Hydro shifter on a '64 SP400? If not, anybody know what shifters would work? I don't need a ratchet shifter, just one for the street in a hot rod. Thanks.
The '64 TH400/ST400 is a one-year design, and I don't know of any aftermarket shifters that were designed specifically for the 'box. Your options would be to use a factory floor shifter from '64 (like what's in my 'Cat), any two-speed factory floor shift or perhaps an aftermarket Powerglide unit (the late 'Glide's quadrants are the same). GM used the Turbo 300 (two speed) in a number of intermediate models during the '60s and there may be something that looks right for you. Adapting it to suit your tranny should be pretty easy. Hope that helps.
I have a 65 SP400 in my 50 chevy and unless i'm missing something, the shifting mechanism is just like any other TH400. If I'm wrong please correct me. Maybe a 64 is different.
P-R-N-D-2-L is P-R-N-D-2-L, so far as I know, most of your GM transmissions the actual click into gear is an internal trans thing, so I don't know why any shifter wouldn't work as long as it moves far enough to reach all the gears.
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