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3800/ F23- Spec aluminum flywheel question by cam-a-lot
Started on: 05-24-2023 06:59 AM
Replies: 2 (261 views)
Last post by: cam-a-lot on 05-25-2023 05:39 PM
cam-a-lot
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Report this Post05-24-2023 06:59 AM Click Here to See the Profile for cam-a-lotSend a Private Message to cam-a-lotEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hello

The SPEC flywheel I received recently does not fit on my crankshaf hub. The hub OD is about 1.262" dia

My Camaro flywheel ID was 1.264" dia so it fit well

The SPEC flywheel ID is 1.252". Too small, even for interference fit.

They claim that they have sold hundreds of these flywheels without issues

My block is an L26, Series III

Has anyone had similar issues with SPEC aluminum flywheel?

thanks

[This message has been edited by cam-a-lot (edited 05-24-2023).]

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fieroguru
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Report this Post05-24-2023 05:49 PM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
Spec's attention to details is quite lacking...

Just send them a pic of the flywheel and the undersized measurement. They know what the spec should be and your clearly isn't there.
They likely had a worn cutting insert when the center bore was cut making it undersized, which is how they can have hundreds w/o issue but yours be too small.
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cam-a-lot
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Report this Post05-25-2023 05:39 PM Click Here to See the Profile for cam-a-lotSend a Private Message to cam-a-lotEdit/Delete MessageReply w/QuoteDirect Link to This Post
It seems like the Series II has a different size crank end diameter than the Series III. Not sure- don't have a Series II to confirm.

But SPEC is sending me a new flywheel with a larger bore at N/C and i will return this one.

Can anyone explain to me why both the Camaro flywheel and the SPEC aluminum flywheel have one of the flywheel holes as an oblong slot instead of a round hole? This is one of the 8 holes for fastening the flywheel to the crank

Trying to upload a photo, but PFF says "you need to be logged in to upload media", even though I am logged in.

[This message has been edited by cam-a-lot (edited 05-26-2023).]

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