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Originally Posted by wagonis
I don't know that I am going to start messing with modding internals, so the question is more towards stock 5S block vs. stock 3S block.
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If you are running a rev1 5s block, you'd need to make a provision for a knock sensor and other small modifications to the block. Stock 5S rods are garbage, but you could use 3S rods. But then again, that requires you machine the rod journals to fit.
Stock for stock, 3S block > 5S block. Modded vs Modded, 5S block > 3S block.
Just swap in a 3SGTE and boost happily. Spend $50 for an rpm swithc from summit to control TVIS and you'll have more mid-range grunt if that's what you were seeking by looking for more displacement.
Quote:
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Originally Posted by wagonis
From what I assumed earlier on is that the 5S blocks were stronger (read that somewhere but could be wrong) and the bigger displacement meant more boost with less risk.
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Yes, the blocks themselves are stronger. But the stock internals are weaker. And the extra displacement wont affect how much you can boost, but rather how quickly you get there.