I can’t decide! I’m doing a manual transmission swap and I can’t decide between a hydraulic throw out or a factory type mechanical setup. I would prefer to do an external slave cylinder style but that seems like it will take some skilled fabrication out of good metal. This is a Buick V8, a Firebird bellhousing, and a Camaro V6 T5. Is a mechanical setup really that hard on your leg? Are internal hydraulics really that prone to failure? What’s your experience?
I ran 84-92 Camaro V8 T5, master / slave and bell. The shifter position is really good for a G-body console. The 200-4R speedo cable worked with it. The hydraulics worked like in a Camaro. It required crossmember mods, a hole in the floor, and pedals welded to work. Everything else was "buy replacement parts for a Camaro." This was a nice setup because I had a stock style clutch, the V8 ratio T5 which matched the 305 / 3.73 rear very well (your V6 setup is one I've passed by many times on purpose.) For used parts, I was very happy with this setup and I drove it over 1000 miles one way shortly after the swap.
My next setup was mechanical speed direct rod-end linkage, the 83 camaro bellhousing, and another V8 Camaro T5. Basically nothing was "better" except the trans. was WC and I had rebuilt it but it all worked correctly. The 83 camaro has no benefit over the 84 Camaro. Would I rather unbolt and replace hydraulics, or get the z-bar and linkage re-welded? I'd go hydro.
I later modded a 94-97 T56 to take a T56 throwout bearing and clutch in the 93-97 bellhousing. Worked fine. But no real benefit over the hydraulic. In retrospect, the 94 Camaro ratios weren't a good match like the V8 T5 ratios.
I think that sounds right. TKO 500 and 600 only differ in their gear ratios. Less multiplication of torque means more capacity they say.
Any time a pair of gears are farther apart in size, they are weaker in design. A small pinion in a 4.56 gearset is automatically weaker than a larger pinion in a 2.73 gearset. This same concept applies to the V6 ratios vs. the V8 ratios. The main issue though, is the gear ratios putting the engine in a happy power range, and percentage of rpm drop off with shifts.
I'll leave the V6 ratios deadhorse alone now.
🙂