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Engine turns but flywheel does not

Old 12-11-2018, 07:51 PM
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Engine turns but flywheel does not

I recently picked up a 1986 z28 with a swapped engine (350 carb). It hasnt been started in years, and when I tried turning it over it seemed like the starter wouldn't fully engage the flywheel. So I tried cranking the engine with a ratchet to see if it would rotate and it turned reasonably easily. However, when i checked the flywheel after I cranked the engine a few more rotations, I noticed it hadn't moved at all. What would cause this??
Old 12-11-2018, 10:34 PM
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Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: Engine turns but flywheel does not

Broken flywheel bolts, or broken crankshaft.

GD
Old 12-12-2018, 07:00 AM
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Car: 1990 Firebird Drag car build
Engine: 355 being rebuilt
Axle/Gears: 4.56 LDS
Re: Engine turns but flywheel does not

Originally Posted by GeneralDisorder
Broken flywheel bolts, or broken crankshaft.

GD
Yes and either one of these will require engine removal. Stock cast crank shafts can only hold up to so much power.
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