Valve springs

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Oct 6, 2022 | 06:01 PM

bas

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Joined: Feb 2007

Posts: 13

From: Nova Scotia

Valve springs

Does anyone know the GM part number for a 1966 Olds Toronado 425 valve spring? Thanks

Oct 6, 2022 | 06:44 PM

sysmg

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Joined: Sep 2010

Posts: 472

The part number for all 1966 V8s (except for OAI and HD) is 387719. HD is a heavier duty internal spring which requires removing the valve stem seals. Not sure what good the part number is, as I am sure it's unobtanium.

Last edited by sysmg; Oct 7, 2022 at 11:58 AM.

Oct 6, 2022 | 06:48 PM

sysmg

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Joined: Sep 2010

Posts: 472

Quote:

Originally Posted by sysmg

...snip... Not sure what good the part number is, as I am sure it's unobtanium.

Well I guess I have to eat my words:

https://www.ebay.com/itm/185423437215
https://www.ebay.com/itm/324066412696

Oct 7, 2022 | 06:00 PM

bas

Thread Starter

Registered User

Joined: Feb 2007

Posts: 13

From: Nova Scotia

Thanks, I have springs from a 68 400 engine # 397583 Sul 387719. They look the same ,both with damper. Don't have a Toronado 425 number but likely the same.

Oct 8, 2022 | 05:17 PM

sysmg

Registered User

Joined: Sep 2010

Posts: 472

Quote:

Originally Posted by bas

Thanks, I have springs from a 68 400 engine # 397583 Sul 387719. They look the same ,both with damper. Don't have a Toronado 425 number but likely the same.

For what it's worth the second Ebay listing say the part number is for:

1968 1969 Oldsmobile 400 w/ 2 BBL Carb Valve Spring