Robert, I am sure you will find the wide bolt pattern goes back to 1954. BTW
one of the scarcest to find was the "54 truck 3 speed which had the wide
bolt pattern and hooked to a closed driveline, This was only used one year,
and made a easy conversion putting a V/8 in pre 1955 Chevrolets. Almost all
the cars and pickups were the same trans to bell hookup no matter what
engine was used 1955 and after. Now in "63 the bellhousing to engine bolt
pattern was made the same, now this really opened the field for Chevrolet
combinations.
Just an old timer
Lee
----- Original Message -----
From: "R Baird" <bairdr@charter.net>
To: <oletrucks@autox.team.net>
Sent: Wednesday, December 21, 2005 7:11 AM
Subject: Re: [oletrucks] Bellhousing or transmission measurements ? ? ?
> Early 6 cyl. and V8 were different the bolt pattern to engine was
> different it was not until the 230 6 cyl. in 63 that the bolt pattern
> was the same as for the 3 seed and 4 speed the hole in the bell housing
> was the same size
>
> the early V8 3 speed and compound sm420 and sm465 4 speed were the same
> size used the same input shaft in the transmission
> It changed in the 1 ton or 3/4 ton they used a bigger input shaft !/2
> ton was all the same
>
> Robert Baird Ft. Worth Texas
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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