I'm curious... what models/years of Olds/Buick/Pontiac cars did the 215
come out of?
Rick Morrison wrote:
>
> Nope, the original 215 cci engine was designed by the folks at the Buick
> division, but with corporate understanding the engine would be utilized
> by other divisions. (ie Olds and Pontiac)
> The main reason the "hot rodders" prefered the olds engine was it had an
> extra head bolt at each cylinder (6 bolts per hole, vs 5 on the
> Buick/pontiac version) The stud boss was cast into all blocks - it is at
> the 12 o'clock position when viewing the block from the top-but was only
> bored and tapped for the Olds versions, as the Oldsmobile folks felt that
> with the turbocharger, the possibility of head lift was increased.
> The Olds version was the turgbocharged engine. Pontiac, only reluctantly
> offered the engine, as they were in the process of developing in-house
> their own small displacement V8, and really prefered to wait it out.
> As for the Olds version "breathing" better, that's really problematical.
> Compared to the 4100 series Buick engines, yes the F-85 did, whether due
> to some kind of magic by the Olds head designers or pure luck is open to
> debate. However, the later 4300 series Buick engines, 1963 with 4bbl
> Rochester carb, high compression and bigger valves, more than held it's
> own on the flow bench, and because of the larger valve sizes, is more
> receptive to head flow improvements.
>
> Just my $.02 worth
>
> Rick Morrison
> 72 MGBGT
> 74 Midget
>
> On Tue, 07 Jul 1998 07:27:57 -0500 ccrobins <ccrobins@ktc.com> writes:
> >Hi Paul,
> >
> > Thinking back to the original 215 V8.....Don't remember for sure but
> >I
> >seem to recall that the original design came out of the Oldsmobile
> >division of GM. The Olds F-85 had the same 215 block with different
> >heads - heads that breathed better, too. That's why hot rodders chose
> >the Olds version if space wasn't a problem. The Buick version was
> >narrower, so that's why it went into the MGB - it would fit. I seem
> >to
> >recall that there was a Pontiac version of the 215 V8 too. Lessee,
> >which one of them had the turbocharger with the waste gate?
> >
> > Charley Robinson
> > `69 B
> >
> >
> >
|