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High STR ?

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Old Feb 4, 2003 | 01:21 PM
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nuzee's Avatar
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Default High STR ?

Can someone explain the reason why a high STR causes less efficiency at the upper end? Thanks!
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Old Feb 4, 2003 | 06:51 PM
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Default Re: High STR ?

a High STR doesn't automatically result in low efficency. However for a given pump/turbine design, changing the stator to to achieve a higher STR can result in a lower efficency.
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Old Feb 7, 2003 | 04:09 PM
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Default Re: High STR ?

Why is mileage so low?? I do better than that with a big cam and 4200 stall.

What would be perfect for you is Yank TT3000 3.0 STR. Unforunately I don't think they sell it anymore. I'd call mike @ rapidmotorsports and have him get you a TCS with a 2800 or 3000 stall and a 2.5 to 3.0 STR.

Vig 2800 is popular with 2.73 guys too.

BTW, the SLP 2600 will cure the off-the-line blues with 2.73 gears and it is inexpensive too. Feels almost like stock. The downside is that it wont cure the dead spots on your upshifts the way a good 2800 - 3000 stall will.
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Old Feb 8, 2003 | 12:21 AM
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Default Re: High STR ?

Thanks for the reply. So the stator design is the major factor. I was wondering about how important housing size is. Ehh, too complicated for me to attempt to understand.

I'm flip-flopping between doing gears or TC first. I do alot of stop & go city driving. I get about 11-12 mpg with my 2.73 gears. I want to increase my torque multiplication to make city driving snappier. If a high STR converter w/relatively low stall (2400) can do the job that 3.73 gears can, I might go with that.
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