They stopped casting in the bosses for the front mounts on some factory
engines sometime in the 80's i belive, I think the target masters still
had them though, but undrilled.
If you are using the bellhousing mounts you don't have to have side
mounts on the engine, but with a HIGH horse engine I would add them. In
no circumstances use just the front mounts and a transmission tail
mount, the engine flops around awful like that :-)
--
John Dorsey
Wauchula, FL
'49 Chevy Panel http://www.strato.net/~jrdorsey/truck.htm
'52 GMC Firetruck http://www.strato.net/~jrdorsey/fire/fire.htm
'51 Chevy suburban http://www.strato.net/~jrdorsey/burb/
"Edward T. Dingo" wrote:
>
> What did you use for front motor mounts? I'll have the bell housing with the
> mounts on it, so a wide stance on the front isn't required. Can the front of
> a 350 be drilled for the old front mounts?
>
> Gwyn Reedy wrote:
>
> > Ryan,
> >
> > I'd pick the 3.50 (or a 3.70 if one is available).
> >
> > At cruise you can't really tell the difference between 2300 and 2700 RPM.
> > Not your ear - maybe your gas gauge can....
> >
> > I've got a 72 with a big block, THM-400. Ran 3.07 in it for a long time, now
> > have 3.73. Big difference in initial acceleration, hardly noticeable at
> > cruise. MPG never was any good anyway.
> >
> > Economics aside, you won't hurt an engine to cruise at 3500 or 4000 RPM. My
> > 1970 C-50 has a two speed rear end and the high ratio is something like
> > 6.83. Of course it uses 38 inch tires, but if you run 65 it tachs about
> > 3500. Seems to go on all day like that. That said, I picked up a Brownie
> > manual overdrive to cut that RPM by 20%. Cut the RPM to 3200 and boost the
> > cruise speed to 70. With a nice set of pipes its just music.
> >
> > By the way, one of my projects is a 56. Am planning to leave the original
> > rear end in it (if it turns out to be in working order) and use a 56 vintage
> > 3 speed with overdrive. Probably will get a 350 as I have a couple lying
> > around.
> >
> > What did you use for front motor mounts? I'll have the bell housing with the
> > mounts on it, so a wide stance on the front isn't required. Can the front of
> > a 350 be drilled for the old front mounts?
>
> Chevy engineers, in their wisdom, left the 2 bolt holes on each side of timing
> cover intact, and tapped (in the majority of blocks) to facilitate installing
> newer small blocks into chassis' that contained the original 265 V-8. Early
> front mounts will work but engine is suspended at each end. I've been told to
> use early mounts AND side mounts (using universal crossmember). Early mounts
>to
> use primarily as locator, using orig frame holes. Side mounts to anchor engine
> at total of 4 points. And it makes tranny removal much easier too with engine
> held in place at 4 points. imho.
>
> Ed in Mich.
> '57 3100
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
--
John Dorsey
Wauchula, FL
'49 Chevy Panel http://www.strato.net/~jrdorsey/truck.htm
'52 GMC Firetruck http://www.strato.net/~jrdorsey/fire/fire.htm
'51 Chevy suburban http://www.strato.net/~jrdorsey/burb/
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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