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Well I know this question has been done to death on here & other forums BUT I took a look at the box in my TR8 today while it was on the ramp for some minor maintenance and have a question[:)].

The serials number starts CN, then the actual number & ends with the suffix C. I understand the suffix C part but I have not come across a box with the prefix CN.

Anyone got any info on where this may have come from? I think early TR7 5 speed boxes were CL so maybe this is just a later TR7 box?

Tony

<font size="1">1981 TR7 FHC Cavalry Blue
1980 TR7V8 DHC Jaguar Regency Red - sadly sold!
1977 TR8 FHC EFI Factory development car Inca Yellow</font id="size1">

All 5-speed gearboxes I have are CL-******C(0).
They are all (5 of them) from cars ranging from early 1980 to late 1981.
Maybe a different number because it's a Tr8 with different spec gearbox?

<center>
<font color="blue"><i>1980 TR7 DHC (my first car, now restored and back on the road)
1981 TR7 FHC Sprint (better known as 't Kreng)</font id="blue">
<b>[url="http://www.tr7beans.blogspot.com/"]<u><b><font size="3"><font color="red">My Weblog</font id="red"></font id="size3"></b></u>[/url]</b></i></center>

That's a possibility Theo.

Any of you TR8 owners out there able to comment?

Tony

<font size="1">1981 TR7 FHC Cavalry Blue
1980 TR7V8 DHC Jaguar Regency Red - sadly sold!
1977 TR8 FHC EFI Factory development car Inca Yellow</font id="size1">

Had a quick look in one of my books and a "normal" factory TR8 should have 15A prefix gearbox.
So bearing in mind yours is a development car they maybe used parts lying around in the workshop?

<center>
<font color="blue"><i>1980 TR7 DHC (my first car, now restored and back on the road)
1981 TR7 FHC Sprint (better known as 't Kreng)</font id="blue">
<b>[url="http://www.tr7beans.blogspot.com/"]<u><b><font size="3"><font color="red">My Weblog</font id="red"></font id="size3"></b></u>[/url]</b></i></center>

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Beans</i>

Had a quick look in one of my books and a "normal" factory TR8 should have 15A prefix gearbox.
So bearing in mind yours is a development car they maybe used parts lying around in the workshop?<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

[:D] That's also a distinct possibility!

Tony

<font size="1">1981 TR7 FHC Cavalry Blue
1980 TR7V8 DHC Jaguar Regency Red - sadly sold!
1977 TR8 FHC EFI Factory development car Inca Yellow</font id="size1">

TR8 gear boxes have CN prefixes, it's even on the bell housing in wax pencil. At least it is on my three TR8's gear boxes (one 1980 and two 1981's).

TR8

Thanks Peter. I also had a reply from the TR8 email list saying the same thing, so it would seem CN denotes an original TR8 gearbox.

Is there any actual difference in the internals of the box compared to a TR7 CL box?

Tony

<font size="1">1981 TR7 FHC Cavalry Blue
1980 TR7V8 DHC Jaguar Regency Red - sadly sold!
1977 TR8 FHC EFI Factory development car Inca Yellow</font id="size1">

Lineage? [:D]