Be careful with that logic. Horse power is related to RPMs. Take a look at
the power curve for your engine vs. RPM.
> From: Bill King <kingwj@del.net>
> Reply-To: Bill King <kingwj@del.net>
> Date: Wed, 01 Nov 2000 16:23:13 -0500
> To: mgs@autox.team.net
> Subject: rear end question
>
> Is it possible and practical to put the 3.909:1 MGB rear axle into a MGA?
> The only 'official' ratios listed for the A are the standard 4.30:1 and an
> optional 4.555. It's my theory that a motor will rev a certain
> predetermined number of times as determined by an unknown force and
> therefore it is to my benefit to get the greatest number of miles out of
> those revs. My car already has a B motor so the power is there for the
> longer gear. The manuals list the rear tracks as:
> A- 48 3/4" (disk wheel)
> B- 49 1/4" (any wheel)
> My question is are the brake drums .25" wider on the B so that mounting my
> original brakes will bring the track back to correct. Also drive shaft
> lengths are different, which is not unexpected. Is this a project worth
> taking on or should I just forget about it?
> Comments please
> Regards,
> Bill King
> 59 A
>
>
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