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91 4runner with 5vz-fe swap.

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Old 11-28-2013, 08:46 AM
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91 4runner with 5vz-fe swap.

So I have a 91 runner and it has a 98 5vz in it. On the highway I run about 75-80mph at about 3100rpm. Is that normal?
Old 12-05-2013, 07:01 AM
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depends on the transmission and rear axle gearing - what are the specs on those?
Old 12-05-2013, 09:49 AM
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Factory 4.88 gears and I'm not sure about the tranny.
Old 12-05-2013, 10:07 AM
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stick or auto?
Old 12-05-2013, 10:24 AM
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Wether you used a pre or post 95 trans the gear rations shoudl be the same.

5th gear ratio in either a new or old r150 is .83 and that's a little short. The At is closer to a .7 ratio in 4th so if it's standard it doesn't sound too far off it's its an auto it might be a bit high.

Tire size can be a factor.
Old 12-05-2013, 04:22 PM
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What size tires?

I was somewhere around there with 31's and 4.56, but with the 33's I have now (and the same 4.56's), the engine speed is a little lower.

And just so you know, the engine speed (rpm) for a given wheel speed (mph) has nothing to do with the motor, it's all about the various gear ratios between the transmission, axle, and tire diameter.
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