This will not be of any help on verifying the "legality" of the 510
differential in the rear-end of the GT-6 but there was a similar situation
with a differential in the Sunbeam Alpine.
I have been told that as long as the "stock" axle housing and diff. carrier
was in place it was legal.
Doane Spencer had taken a Studebaker differential and machined it to fit the
Sunbeam's housing. Then axles were cut and adapted. It was a $300.00+
option on the Sunbeam in the mid-60's. Based on various notes, my car was
competing with this setup in the mid-60's.
This was enabled Sunbeam owners to utilize a Posi-lok rearend. There wasn't
a widely available Posi-lok differential for the Alpine besides for the
differential Doane assembled.
Many of the modifications Doane made for the Sunbeam became "authorized"
factory parts. I even have heard that a brochure was produced with many of
the "Hollywood Sports Car" competition Items. The differential was one of
the parts listed.
Steve Silverstein
on 8/5/00 12:15 AM, Gt6steve@aol.com at Gt6steve@aol.com wrote:
> Greetings Amici,
> I hope someone can help...While talking to Luke Stockdale today about our
> GT6's the question came up as to the validity of 240Z hubs in the rear
> suspension. Because of the restrictiveness of some clubs to modofications
> Luke asked if I had any documentation to support that Group 44 actually did
> this mod and was it actually legal? We pondered the same question for the
> 510 diff in GT6's. We both have tons of hearsay to support the validity but
> as our sport becomes ever more "period authentic" can anyone help us find the
> documentation? I've been complacent with the anecdotal evidence but would be
> poorly prepared for a challenge. Is there any evidence out there? Thanx,
> Steve
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