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Discussion Starter #1
I thought the turbo and non turbo both had the same clutch from the factory, why do all the aftermarket clutches say "turbo" or "non turbo"? are the both usable in each trans? mvp ms has stage 3 turbo clutch with 520 ft lb rating while the stage 3 n/a has a rating of 359. so whats the deal with these?

edit: my sig is working, YES :)
 

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7m love... dont hate.
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2,571 Posts
well cause the flywheel, pressure plate, clutch disc, transmission, input shaft spline count, and clutch slave cylinder are different. you will never get near 359 ft lbs of torque on a n/a.
 

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Overlooked
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4,677 Posts
The reason is mainly because the NAs came with the W58 trans and not the R154. The spline count is different and the R154 is much stronger. The w58 will usually last up to about 400 hp and the R154 has been know to hold up to 1000+. But you have to look at torque mostly.
 

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Dr. Jeff Lange
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9,349 Posts
The splines on the R154 and W58 are the same.

The clutches are setup completely differently however. W58 is a push type, R154 is a pull type. R154 flywheel is thicker, and bolt pattern to the pressure plate is different.

Basically everything is different, except the splines, that's the same.

Jeff
 
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