Hey Burt:
Earlier this year I installed a master cylinder pedal box with a brake
booster from a rubber bumper MGB (year unknown). The box bolted right
up to existing captive nuts! BUT, I am running a Weber DGAV carb; with
dual SU carbs, I don't think there would be enough room for the booster
and master cylinder to clear the SUs. Keep in mind that the rubber
bumper MGBs used a single carb set-up.
The problem with your speedo is that in all likelihood, it is a
non-overdrive unit. Go to and you can match your speedo serial number
and find out what you have. Every once in awhile, I get used o/d
speedos in, but they are quite rare!
Hope this helps!
Cheers,
Jim Boyd
International Sportscar Components "...a web site in development..."
Paradise, CA
Burt Hutcherson wrote:
> Hello Everyone,
>
> I have a pair of questions for your knowledgeable consideration....
>
> Recently I was able to purchase a later model MGB master cylinder/brake
> booster/pedal box (I am unsure of the year). I am hoping to install it in
> my early 1974 MGB to gain the added braking performance. Is this a fairly
> straightforward conversion or will I encounter rude and sinister things
> previously unknown?
>
> Additionally....2 years ago I had an overdrive transmission installed in
> the car and since that time my speedo runs about 8-10 mph slow. The
> transmission that was installed was from an earlier model although I don't
> know which year. The speedo is rock solid and doesn't waver, it just reads
> low. Is this because the speedo and the transmission and incompatible(i.e.
> different years)?
>
> Other than these little things all I need is more time to drive it!
>
> Thanks in advance,
>
> Burt Hutcherson
> Gordonsville, VA
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