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Home » Public Forums » GMCnet » 455 Expected Engine Life (Assuming proper care, how many miles?)
Re: [GMCnet] 455 Expected Engine Life [message #360444 is a reply to message #360443] Tue, 01 December 2020 16:18 Go to previous messageGo to previous message
Mike Kelley is currently offline  Mike Kelley   United States
Messages: 467
Registered: February 2017
Karma:
Senior Member
Dave S.:
1 qt every 1,000 miles on my 455 w/ 3:21 upgraded tranny is very acceptable to me!
I change oil once per year or every 3,000 miles - which ever comes first (religiously).
Mike/the Corvair a holic

Sent from my iPhone

> On Dec 1, 2020, at 3:51 PM, Larry via Gmclist wrote:
>
> roy1 wrote on Tue, 01 December 2020 15:07
>> I assume you have a 4:10 final if it is in fact a 4:70 you need to tell us about it.
>
> IIRC, I think he (Doug) has a 3.70 FD. I'm not aware of a FD for our coaches that is as steep as a 4.70. I think it is probably a typo.
>
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
>
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