[Supras] Turbo manual trans gearing

[Dan Gyoba]

On 28 Dec 2007 at 4:03, berniek at technicaldevelop.com wrote:

>     Just curious if there are any transmission gear ratio mods or a
> different trans (hopefully bolt up at least on the bellhousing side
> with a higher first gear.

Nope.

The gear ratios in the R154 (And the W58, for that matter) aren't bad, as far as 5 speeds go, so you 
don't really want to do that anyhow.

What you MIGHT want is to provide a taller rear end, which will effectively reduce all of the gearing. 
 A 90+ differential from a turbo would be 3.727:1 ratio, which would be taller if compared to a 
3.909:1 from an '87 - '89 turbo.

Toyota also made "G" ring differentials in taller ratios as well, though I've no idea what you'd find 
them in.

Of course, there's always the poor man's solution to a taller final drive...  Larger diameter tires.  
:p

Dan Gyoba
'89 NA 456,708 kms, Turbo swap COMPLETE
http://www.abstractconsulting.com/~dan