The pilot hole depth on the K1 crankshaft is shallow, I just had a short built with one in it and it can not mate up my T56 on my F-Body. I spoke with K1 and apparantly the design was modeled off an auto car, and they are working on fixing it on the new cranks. The recomended fix is grinding the input shaft of the tranny (upto ~0.150" depending on the plug they put in the crank - these vary too.). The rep said the plug could also be drilled if the intreference was not too deep.
Just thought you should know...
__________________ Z28 + CP 402 LS2 (9.5:1 + Wiseco Pistons + Howards Rods + Carrillo Crank + Hellfire Rings) + Patriot Heads + ATI HB + Poly Mounts + Megasquirt (Meth Injection, Launch Control, Flat Shift, Knock) + LC1 WB02 + Stage V T56 + Hurst Shifter + PST 3.5" DS + Moser 9" 3.25 + Dual 3" w/ Super 44's + Twin Turbo MPT70 + Twin Tial 38mm WG + FMIC + Tial 50mm BOV + Edelbrock TA,LCA,PHR + BMR SFC,STB + Tokico Shocks + Spec V + Twin Walbro 255HP In Tank w/-8 feed + PP Rails + PP FPR + 96lb inj's + 315's in Back
The pilot hole depth on the K1 crankshaft is shallow, I just had a short built with one in it and it can not mate up my T56 on my F-Body. I spoke with K1 and apparantly the design was modeled off an auto car, and they are working on fixing it on the new cranks. The recomended fix is grinding the input shaft of the tranny (upto ~0.150" depending on the plug they put in the crank - these vary too.). The rep said the plug could also be drilled if the intreference was not too deep.
Just thought you should know...
As stated above, the early cranks we produced were made to fit cars with an automatic transmission. While some could be mated to a manual transmission by removing approximately .020” from the end of the input shaft, we have made modifications to our design and all cranks currently being shipped will work with either type of transmission.
Never heard of a K1 crankshaft - Is this a good product? I am thinking of purchasing one for my Race Boat and Cigarette. I am running 800HP and 700 HP on the Cig. Looking for a 4.375 build on a 807 casting Bowtie 10.2 tall deck.
So....the K1 crank was modeled off an A4 car. What's the difference between a crank in an A4 car and the crank in an M6 car? I'm guessing nothing other than one comes with a pilot bearing. Why wouldn't the flange and the rear of the crank be modeled off a stock LS1 crank rather than the front of whatever transmission might be used with it? It would seem like the obvious approach so that you know either transmission will work. ?
__________________ 99 SS M6 #1508 Always for sale. It looks like nobody's home.
I met this guy...nobody is home.
Never heard of a K1 crankshaft - Is this a good product? I am thinking of purchasing one for my Race Boat and Cigarette. I am running 800HP and 700 HP on the Cig. Looking for a 4.375 build on a 807 casting Bowtie 10.2 tall deck.
LS2 K1 crankshaft WARNING 
