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there are tradeoffs, you can have the response of larger displacement with a stroker and have the power come on early and have lower rpm limits. Or, you can keep the stock crank and increase your rev range using solid lifters/heavy springs/etc and be able to use larger turbos and have the power come on higher in the revs. It will have less response, but will still make big power in the upper end. I think both of these have their reliability concerns... especially if you are looking to go 9k+ rpm, or if you are looking to get a welded and reground stroker crank. Our cars only have 4 main bearings, the weak spot...

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