Thanks for correcting me Barry, I forgot that the 75 was the single rail
change over year
Mark
> -----Original Message-----
> From: Barry Schwartz [SMTP:bschwart@pacbell.net]
> Sent: Friday, September 17, 1999 10:00 AM
> To: Haynes, Mark
> Cc: spitfires@autox.team.net
> Subject: RE: GT6 vs Spit Gearbox
>
> >> Would a 74 or 75 Spit gearbox fit a 70 GT6? I know this is probably a
> very
> >> stupid question but it would save me a lot of work.
>
> >Yes, it would
>
> This isn't entirely correct. It *would* bolt up to the bell housing
> provided it was a 74 or earlier. The 75 single rail, while possibly
> bolting to the bellhousing, wouldn't work because the bellhousing doesn't
> have any provision for the selector shaft to "pass through" as required
> for
> these trannys. Besides those minor glitches, the input shaft is not long
> enough, and the number of splines and the diameter are not the same. Add
> also, that the ratios and laygear material are not really suitable for the
> GT6's increased torque. And you can't use a tranny complete with
> bellhousing, because the starters are on opposite sides for these engines
> (and possibly the bolt pattern for the engine plate/bellhousing is
> different), as well as the clutches themselves are different sizes.
>
> Barry Schwartz (San Diego) bschwart@pacbell.net
>
> 72 PI, V6 Spitfire (daily driver)
> 70 GT6+ (when I don't drive the Spit)
> 70 Spitfire (long term project)
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