ls2 crankshaft on ls1
Yup I just saw that too, maybe my brain was thinking the 2006 Models because that's when the Corvette was 58X when everything else that had a LS2 was 24X. Then in 2007 everything went to 58X.
Yea maybe they are accounting for people being lazy and not wanting to jump through all the hoops to get onto a Forum. Not a bad way to sift the lazy out IMO..
I suggested making the signup procedure multi-step with questions and boxes to check. I see other automotive forums doing this, and according to them it’s working so far. I realize the abilities of AI are quite intelligent in some forms, but the typical AI bot trying to get on Tech isn’t our military grade Terminator style AI bot….at least not yet. I thought it would be worth a try. Site admins thought it would seem too difficult and would deter new memberships. Ok.
Yup I just saw that too, maybe my brain was thinking the 2006 Models because that's when the Corvette was 58X when everything else that had a LS2 was 24X. Then in 2007 everything went to 58X.
Yea maybe they are accounting for people being lazy and not wanting to jump through all the hoops to get onto a Forum. Not a bad way to sift the lazy out IMO..
Yea maybe they are accounting for people being lazy and not wanting to jump through all the hoops to get onto a Forum. Not a bad way to sift the lazy out IMO..
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Gentlemen, how can I explain to you that I am not a robot?
Well, for us to help you, you have to help us. You said this one the othe day..
But then you say this..
Bunch of us have been talking about the LS2 having both a 24X or 58X Tooth Reluctor Crank so my question to you is have you checked to see what exact one you have?
The 24X will have a two-piece Reluctor, it's two pieces of sheet metal welded together for the different pattern.
The 58X Reluctor is one piece with even Teeth all the way around it with one spot about 1" long with no Teeth, it's just blank.
If you have the Engine in the car you would have to pull the Oil Pan or put a Camera in the Crank Sensor hole to see it.
The 24X will have a two-piece Reluctor, it's two pieces of sheet metal welded together for the different pattern.
The 58X Reluctor is one piece with even Teeth all the way around it with one spot about 1" long with no Teeth, it's just blank.
If you have the Engine in the car you would have to pull the Oil Pan or put a Camera in the Crank Sensor hole to see it.
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It's like you didn't realize that when I bought the LS1 engine with the accessories, I didn't know that the LS2 crankshaft was inside. I swapped the engine, turned it on, and saw that it was making a terrible explosion sound. At first, I thought it was from the air manifold, sensors, coils, spark plugs, or wires. But I replaced everything with new ones and the problem didn't go away. And when I told the seller about this, he just told me that I put an LS2 crankshaft on this engine. Now, I still don't know if this crankshaft has 58 teeth or 24 teeth. I'm just suggesting that the 58-tooth reluctance is for several reasons, because it seems like the engine is not timing, it's running poorly with black smoke, and worst of all, it's making an explosion sound. Now, I'm asking you, my dears, for a simple tip. That's it.
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Well, for us to help you, you have to help us. You said this one the othe day..
But then you say this..
Bunch of us have been talking about the LS2 having both a 24X or 58X Tooth Reluctor Crank so my question to you is have you checked to see what exact one you have?
The 24X will have a two-piece Reluctor, it's two pieces of sheet metal welded together for the different pattern.
The 58X Reluctor is one piece with even Teeth all the way around it with one spot about 1" long with no Teeth, it's just blank.
If you have the Engine in the car you would have to pull the Oil Pan or put a Camera in the Crank Sensor hole to see it.
But then you say this..
Bunch of us have been talking about the LS2 having both a 24X or 58X Tooth Reluctor Crank so my question to you is have you checked to see what exact one you have?
The 24X will have a two-piece Reluctor, it's two pieces of sheet metal welded together for the different pattern.
The 58X Reluctor is one piece with even Teeth all the way around it with one spot about 1" long with no Teeth, it's just blank.
If you have the Engine in the car you would have to pull the Oil Pan or put a Camera in the Crank Sensor hole to see it.
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Verdad Gallardo It's like you didn't realize that when I bought the LS1 engine with the accessories, I didn't know that the LS2 crankshaft was inside. I swapped the engine, turned it on, and saw that it was making a terrible explosion sound. At first, I thought it was from the air manifold, sensors, coils, spark plugs, or wires. But I replaced everything with new ones and the problem didn't go away. And when I told the seller about this, he just told me that I put an LS2 crankshaft on this engine. Now, I still don't know if this crankshaft has 58 teeth or 24 teeth. I'm just suggesting that the 58-tooth reluctance is for several reasons, because it seems like the engine is not timing, it's running poorly with black smoke, and worst of all, it's making an explosion sound. Now, I'm asking you, my dears, for a simple tip. That's it.
If the previous person went that far into the Engine there is a possibility other things are incorrect. The Camshaft Timing Gears could be not timed correctly. If it's an aftermarket Cam the car could not be tuned right. No reason to put a LS2 Crankshaft into that Engine besides it's the same 3.622 Stroke, maybe they did not know about the 24X and 58X Reluctor difference.
Obviously we aren't looking at the car with you but until things are known forsure what's there, throwing money and parts at it is not what to do. Need to see exactly what you have in your hands. That's the gamble with buying anything used in this case sounds like they put it together with what they could find and maybe didn't know about the small differences that are big problems if not the correct parts.
Last edited by the_merv; Dec 14, 2025 at 08:18 PM.
Best thing to start with is to remove the crank sensor and inspect the reluctor wheel to verify 24x or 58x. Also the 24x and 58x use different colored crank sensors.
24x black
58x white
Like Merv said, there could be other underlying conditions causing your issues.
24x black
58x white
Like Merv said, there could be other underlying conditions causing your issues.
Without reading thru all the posts, do we even know what car this engine is in? What ECM is in the car? I agree with what Merv said about checking. You're gonna have to check if the wheel is 24 or 58. The 58 almost looks like a thin gear, and the 24 is 2 pieces, one piece butted up against the other, with much larger "teeth." Too many unknowns. Its also possible whoever pressed the wheel on did a poor job. The 24t can be bent much easier than the 58t... .
Last edited by grinder11; Dec 15, 2025 at 10:00 AM.
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Can you see how many teeth there are through the hole in the crankshaft sensor?
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Without reading thru all the posts, do we even know what car this engine is in? What ECM is in the car? I agree with what Merv said about checking. You're gonna have to check if the wheel is 24 or 58. The 58 almost looks like a thin gear, and the 24 is 2 pieces, one piece butted up against the other, with much larger "teeth." Too many unknowns. Its also possible whoever pressed the wheel on did a poor job. The 24t can be bent much easier than the 58t... .
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Like I said above it may not be that it could be Cam timing. People have messed that up before. From there make sure all your Rockers are properly tightened to spec.
I read just the other day that both sensors have started being sold in the same color. That should be fun.