FE crank keyways

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Feb 22, 2023 | 02:49 PM

belate1

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3rd Gear

Joined: Feb 2023

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FE crank keyways

I'm lost. We had to replace our 390 with a salvaged 360. The 360 crank has a keyway that doesn't fit the 390 crank spacer. The 390 spacer has a slightly narrower keyway cut into it and I can't locate a spacer with a keyway that will mate w/ the 360 crank. Any suggestions or a lead on a spacer that will fit? Thanks in advance. This looks like a very good forum and I'm anxious to go thru it soon.

Feb 22, 2023 | 03:24 PM

beartracks

Lead Driver

Joined: Nov 2000

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From: Albuquerque

I don't do FE but it could be you need the spacer/balancer for the size engine.

Feb 22, 2023 | 03:32 PM

440 sixpack

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Joined: Oct 2018

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Are you sure it doesn't just have a burr on it or something ? I thought all FE's took the same spacer. maybe the FT's are different.

Feb 22, 2023 | 03:37 PM

85e150

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OP says 360/390. If he got an FT by mistake he would have crank diameter issues.

Feb 22, 2023 | 03:54 PM

440 sixpack

Lead Driver

Joined: Oct 2018

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Probably. but a 352-428 FE are supposed to take the same spacer.

I'd guess something got hammerd on and swelled .

Feb 23, 2023 | 08:04 AM

cleatus12r

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Joined: Apr 2004

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From: Reed Point, MT

In many years of putting together and swapping parts around in FE engines, I have yet to run into a crankshaft key/spacer issue. They have all been the same.