Marcos Maniacs group photo

Yahoo Groups archive

Marcos Maniacs

Index last updated: 2026-04-28 23:07 UTC

Message

Re: Differential gears 1969 Marcos 3L V6

2004-02-02 by Don Lattimer

Donny,

Remember that the TR7/8 alxes are hub-centric, not lug-centric.  
Make sure the Marcos alloys fit proper.

Don
#3m5759


--- In MarcosManiacs@yahoogroups.com, "Donny Lang" <indigo@t...> 
wrote:
> Pat, 
> I'm also changing to a taller rear gear, but gave up trying to 
find one for my my original axle. Since I am re-powering with a 
Triumph TR-8 3.5 engine and related M77 5-speed, I am also going to 
use the TR-8 rear axle. It has a 3.08:1 ratio and the same 3.75" lug 
pattern as the Marcos, but it is almost 2" wider track. I think I 
can still use it with stock Marcos alloys as far as fitting the rear 
fender openings (I understand all the 1980's Marcos cars were a 
similar wider track). All that is needed is to cut off the Triumph 
locating/mounting brackets off the housing and weld on the ones for 
the Marcos. I may use my originals, or I may have new ones 
fabricated.
> The T-5 gearbox is an excellent choice (I am using one in a TVR 
project). Don L. said a Essex V-4 bellhousing may work. My Marcos is 
a  a '69/'70 (steel chassis) with a Ford V-4. I am removing the 
driveline (though I haven't gotten that far yet!), but I don't know 
if the T-5 will bolt up where my 4-speed currently is. I will look 
to see if it may accept a T-5. Either way, both the V-4, 4-speed, 
and bellhousing are available.  
> I hope this helps! - Donny Lang
>   ----- Original Message ----- 
>   From: patemery@s... 
>   To: MarcosManiacs@yahoogroups.com 
>   Sent: Monday, February 02, 2004 7:23 AM
>   Subject: [MarcosManiacs] Re: Differential gears 1969 Marcos 3L V6
> 
> 
>   Dear Don!
>   I am looking for higher gears to improve highway cruising. The 
existing unit is a Salisbury with 3.58:1 gear ratio. I need 3.0:1. 
Is the differential the same as 6 cylinder Ford Falcon and Mustang? 
If not, where can I get the gears? Has anyone ever done this 
modification? I am currently looking for 15" x 7" wheels to replace 
the Minilites (13 x 8 and 13 x 10) for which I cannot get tires 
anymore. I have already purchased P205R50-15 for the front and 
P225R50-15 for the back. The front wheels will do with 0.197" 
negative offset while the back require 2.195" negative. I am 
expecting some information from Minilite Wheels in the U.K. I am 
prepared to make my own wheels if need be. 
>   The next improvement will be to either replace the second gear 
ratio of 2.214:1 with 1.950:1 or fit a modern T5 5 Speed. Do you 
know where I can find the gear? Will a T5 fit the existing bolt 
pattern?
>   Best Regards, Pat Emery 5365
> 
>   > 
>   > From: "Don Lattimer" <donlattimer@p...>
>   > Date: 2004/01/31 Sat PM 11:31:47 EST
>   > To: <MarcosManiacs@yahoogroups.com>
>   > Subject: [MarcosManiacs] Car of the Month
>   > 
>   > 
> 
> 
> -------------------------------------------------------------------
-----------
>   Yahoo! Groups Links
> 
>     a.. To visit your group on the web, go to:
>     http://groups.yahoo.com/group/MarcosManiacs/
>       
>     b.. To unsubscribe from this group, send an email to:
>     MarcosManiacs-unsubscribe@yahoogroups.com
>       
>     c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms 
of Service. 
> 
> 
> 
> 
> -------------------------------------------------------------------
-----------
> 
> 
>   February's "car of the month" is Andy Seward's Mini Marcos, 
located in
>   Pennsylvania.
> 
>   Hope you all are having a good new year.  We will have some more 
cars on the
>   road this year with Dave Barton and Bob Magnotti nearing 
completion of their
>   rebuilds.  Mine is undergoing the change from 13" wheels to 
16".  Also got a
>   bunch of parts from Garry Diver (Marcos Parts USA) when he 
passed thru
>   northern California on his round trip of the country to deliver 
parts, cars,
>   etc.  Now I've got something to do on these long winter nights...
> 
>   Regards,
> 
>   Don Lattimer (Moderator)
>   #3m5759
>   Willits, CA, USA
> 
> 
> 
> -------------------------------------------------------------------
-----------
>   Yahoo! Groups Links
> 
>     a.. To visit your group on the web, go to:
>     http://groups.yahoo.com/group/MarcosManiacs/
>       
>     b.. To unsubscribe from this group, send an email to:
>     MarcosManiacs-unsubscribe@yahoogroups.com
>       
>     c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms 
of Service.

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.