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Originally Posted by goofynick6
There's a guy over on the NICO board who hit 597whp from his stock internals (aftermarket cams only) RB25, and another guy hit 490whp with his stock internals RB20...
The RB20 is a bit lighter than the RB25, mostly because it uses a lighter transmission, is easy to install, and I picked up my whole swap for under $1000. I'm doing RB20 because they sound 10x better than an SR, it can make the power "I" want (~350whp) and I could afford it.
Turbo'ing the KA is cool if you want 250-275whp, but if you want more, you have to build the engine, in which case, a stock rb25 is better off than that or a stock rb20 and it doesn't weigh that much more than the KA did in the first place.
Anyhoo, just my opinion.
Nick
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actually Nick, there are quite a few people running around with stock internal KA turbo's that are putting out somewhere in the 350-300 rwhp range. You just here more about the idiots that did not get there fuel system setup right and blew there engines.