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Discussion Starter #1
Quick question, a os giken rb30 is I believe a modified rb26.so what's better a os giken rb30 or a proper rb30 fully forged?
 

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OS uses the 26 block with a spacer plate and liners. No 4WD adapter needed.

As for what's better... That's a debate in itself.
 

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One is very expensive.....and unless you are making well over 1000hp I can't see the point in it other than it fits better....
 

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An RB30 with a Nitto 3.2L stroker would be cheaper, and to superior to an OS3L in almost every way, except the height issue in 32s for which there are work arounds anyway.
 

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Discussion Starter #7
The question came up in a discussion with mates, I thought the os would have been better but wasnt sure,cheers guys
 
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