MGC Forum

Welcome! Sign In Register
Please Sign In or Register to Search

MGC rear axle ratios

Posted by Johnzo 
John Zoltner
Rochester, NY, USA   usa

Can anybody tell me what rear axle ratios were available in the MGC?
thanks!
John
. You can hide this ad & support this site by upgrading to a Gold Membership ~ click here for more info
mike odernheimer
park city, USA   usa

'68 model used 3.07 non-overdrive/3.307 overdrive. '69 model changed to 3.307 non-overdrive and 3.7 overdrive. MGB was 3.9 all years and configurations.
ron neal Avatar
Coastal, South Carolina, USA   usa
1962 MG MGA MkII
1968 MG MGC
1969 MG MGC
1969 MG MGC GT
1974 MG MGB GT

And the MGC auto used the 3.307.

Ron
. You can hide this ad & support this site by upgrading to a Gold Membership ~ click here for more info
mowog1 Avatar
Rick Ingram
Saint Joseph, Illinois, USA   usa
1968 MG MGC
1969 MG MGC
1972 MG MGB "Mallard"
1974 MG MGB GT V8 Conversion
1978 MG MGB

The 3.7 is fairly worthless in my opinion.

The 3.07 and the 3.31 are the most desirable of the three diffs, with the 3.31 being "top dog".



1968 MGC - 1969 MGC - 1972 MGB - 1974&1/2 MGB/GT V8 conversion - 1978 MGB

mowog1@aol.com

Pieces Of Eight: Struts For Your MG Pieces of Eight! has provided gas-charged strut kits for the MGB bonnet, MGB and MGC bootlid, and MGB/GT or MGC/GT hatch since 1996. Contact Rick at: mowog1@aol.com

Attachments:
Differential Case Gearset Marking.jpg (33.5 KB) –
Differential Case Gearset Marking.jpg

Gearset markings.jpg (64.2 KB) –
Please Sign In or Register to view this photo
mgcgt2912 Avatar
Richard Bailey
Cully, East Devon England, United Kingdom   gbr

In reply to # 2008526 by mowog1 The 3.7 is fairly worthless in my opinion.

Reason being ?..... Mine is 3.7 ( with overdrive). Its not worthless to me !

R
Robert Kirk
Davenport, Iowa, Rock Island, Illinois, Clearwater, Davenport, Iowa, Rock Island, Illinois, Clearwater, USA   usa

I am in the market for several 3.70 FWIW



Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
Beat or match any retail/delivered quote

Kirk's Auto Parts for your classic British and Italian car. 30 years in business.
Stephen Curtis
, Berkshire, United Kingdom   gbr

auto mgb has 3.7 also fitted ..robert
. You can hide this ad & support this site by upgrading to a Gold Membership ~ click here for more info
Robert Kirk
Davenport, Iowa, Rock Island, Illinois, Clearwater, Davenport, Iowa, Rock Island, Illinois, Clearwater, USA   usa

Don't care where it comes from as long as its a 3.7 for the tube axle or banjo for that matter...

Thanks Steveio...get my package yet?



Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
Beat or match any retail/delivered quote

Kirk's Auto Parts for your classic British and Italian car. 30 years in business.
ron neal Avatar
Coastal, South Carolina, USA   usa
1962 MG MGA MkII
1968 MG MGC
1969 MG MGC
1969 MG MGC GT
1974 MG MGB GT

I also like a 3.7 in a MGC with od. Makes a great car better. I will have to admit with a V8 and a 3.07 it is even a more relaxed cruiser but if I want to really cruise I break out the SV which gets 30 mph per 1000 rpm. Rpm limited to about 6500 since it is not a 3 or 4 valve engine.

Ron
mowog1 Avatar
Rick Ingram
Saint Joseph, Illinois, USA   usa
1968 MG MGC
1969 MG MGC
1972 MG MGB "Mallard"
1974 MG MGB GT V8 Conversion
1978 MG MGB

That's my point.

You need an o/d in order to make the 3.7 an appropriate gearset.

My 1968 MGC does NOT have o/d.

The MGBs with BW35's are as rare as hen's teeth in the North American market.

I've seen two examples since 1974.



1968 MGC - 1969 MGC - 1972 MGB - 1974&1/2 MGB/GT V8 conversion - 1978 MGB

mowog1@aol.com

Pieces Of Eight: Struts For Your MG Pieces of Eight! has provided gas-charged strut kits for the MGB bonnet, MGB and MGC bootlid, and MGB/GT or MGC/GT hatch since 1996. Contact Rick at: mowog1@aol.com
ron neal Avatar
Coastal, South Carolina, USA   usa
1962 MG MGA MkII
1968 MG MGC
1969 MG MGC
1969 MG MGC GT
1974 MG MGB GT

I have one hens teeth but it is a RHD GT.

You guys with multiple models hopefully I will see some of you in Dillard (now that I have a MGBGT). First tank of gas (premium) mostly city driving and mpg was 25. Second tank is mid grade and not empty yet but no problems so far. Begenning to like this car.

Ron
. You can hide this ad & support this site by upgrading to a Gold Membership ~ click here for more info
Robert Kirk
Davenport, Iowa, Rock Island, Illinois, Clearwater, Davenport, Iowa, Rock Island, Illinois, Clearwater, USA   usa

Wouldn't that be, "I have one hen's tooth"....

Its OK Ron, I know a dentist who can get you a full set of mammalian teeth...devil smiley



Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
Beat or match any retail/delivered quote

Kirk's Auto Parts for your classic British and Italian car. 30 years in business.
Stephen Curtis
, Berkshire, United Kingdom   gbr

i was aware that 3.7 did only come with overdrive!! my later mgcs without od have 3.307.. or have i misread ricks post
mgcgt2912 Avatar
Richard Bailey
Cully, East Devon England, United Kingdom   gbr

In reply to # 2009397 by romeo69 i was aware that 3.7 did only come with overdrive!! my later mgcs without od have 3.307.. or have i misread ricks post
Like wise confused. BMC didnt offer 3.7 without o/d as far as I know.
Hence my previous comments.
R
ron neal Avatar
Coastal, South Carolina, USA   usa
1962 MG MGA MkII
1968 MG MGC
1969 MG MGC
1969 MG MGC GT
1974 MG MGB GT

Robert
When I think of one tooth I think of the front row of a Willie Nelson concert, so I just forgot about the singular/plural thing. If a chicken truly has no teeth then would it matter if you used the plural term for tooth?

As far as mammalian teeth some are herbivors, some carnivors and some omniverous. All require a different set of chompers.

Ron
Stephen Curtis
, Berkshire, United Kingdom   gbr

the 3.7 diff also ran the best gear set in the box closer ratio between 2nd and 3rd not that i can tell the difference when driving
Robert Kirk
Davenport, Iowa, Rock Island, Illinois, Clearwater, Davenport, Iowa, Rock Island, Illinois, Clearwater, USA   usa

So it appears:
1968 no OD 3071 (14/43 stamped) P/N BTB900 also MG V8
1968 with OD and 1969 no OD and auto 3307 (13/43 stamped) P/N BTB841 aka BTB842
1969 with OD 370 (10/37 stamped) P/N BTB1244 also used in the most rare MGB auto

MGB tube axle w/wo OD 3909 (11/43 stamped) P/N BTB856


Is that the consensus gentlemen?

Edited as per SteveioRomereo....smileys with beer

Re-edit per other xpertzthumbs up



Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
Beat or match any retail/delivered quote



Edited 2 time(s). Last edit at 03/13/2012 10:14AM by kirks-auto.

Kirk's Auto Parts for your classic British and Italian car. 30 years in business.
Stephen Curtis
, Berkshire, United Kingdom   gbr

couple of digits have slipped robert on you keyboard 14/43was the first one and if you look on btb841 its always stamped as btb842!! wonders of mowog
ron neal Avatar
Coastal, South Carolina, USA   usa
1962 MG MGA MkII
1968 MG MGC
1969 MG MGC
1969 MG MGC GT
1974 MG MGB GT

Dont forget a 68 with od used a 3.3

Ron
Larry Hallanger
San Diego area, CA, USA   usa

Rick

Can you give a wider view of the axle showing where the Differential Case Gearset Markings are located. I want to verify what my spare axle is and haven't been able to find the markings. Couldn't find them on my spare B axle either so am probably looking at the wrong spot.

Thanks



Larry
San Diego area, CA

Y+A+B+C = MG Addiction
. You can hide this ad & support this site by upgrading to a Gold Membership ~ click here for more info

Reply to this topic or post your own questions!

Members Sign In if you've already registered, or

Register a New Account

Registration is free and takes less than a minute

Having trouble posting or changing forum settings?
Check the Forum Help File (FAQ) or contact the webmaster.


Join The Club

Sign in to ask questions, share photos, and access all website features

MGExp Menu

What's New

Membership

Forums ->

MGB & GT

MG Midget

Buy, Sell & Trade

Vendor Market

MG Engine Swaps

Original MG

MGA

MGC

MG Magnette

1100 & 1300

T-Series & Prewar

Modern MGs

MG Motorsports

Member Meetup

MG-2014 Event

Other Vehicles

Off Topic

Clubs

Forum Search

Random Topic

Latest Posts

Live Chat

Calendar

Journals

Tech Library

Car Registry

Cars For Sale

Model Info

Motorsport

Directory

Member Map

MGExp Store

Search Site

Advertising Info

Smartphone quick link
mgexp.mobi

Adjust Text Size

Larger Smaller
Reset Save