[Fot] GT6 vs TR6 blocks - interchangeability?

[Brian Schirano]

The two GT6 blocks I've recently worked on have the notched bottom bores.
I'd have to look Monday about the crank blow outs on the manifold side. I
will defer to others with more knowledge as to GT/TR interchangeability,
but my understanding is the differences were in the crank, pistons and
intake manis, not the blocks
Cheers
Brian

On Fri, Jan 29, 2021 at 2:34 PM Scott Janzen via Fot <fot at autox.team.net>
wrote:

> I am rebuilding my street TR6.  I need to replace the block - it’s
> sleeved, bored 30 over, and needs another bore, and I would rather just
> start over as it’s not original to the car anyway.  It’s a later block with
> the horizontal reinforcement cast into the manifold side, and the car is a
> 1970.
>
> I have another block, allegedly from a GT6, has a KD number indicating
> GT6, but it has the concave/convex “blowouts” on the manifold side to clear
> a TR6 crank, which none of my other GT6 blocks have.  It’s also 25 lb
> heavier than a GT6 block, and has notches at the bottom of the piston bores
> to clear the con rods, which I’m pretty sure the GT6 blocks don’t have
> (though I don’t have a GT6 engine apart and apparently my memory is not
> that good).
>
> So, here’s the question - can I use this for the TR6 - is it the same
> block where at some point the factory used them interchangeably?
>
> Or, do I need to find another block?
>
> Scott Janzen
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage <http://www.team.net/pipermail/fotUnsubscribe/Manage>:
> http://autox.team.net/mailman/options/fot/bschirano1@gmail.com
>
>
>

-- 
Brian Schirano
585-305-0349
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20210129/2bdbb4f1/attachment-0003.htm>