I am running twin 70mm turbos on my 363 sbf and am just wondering if my current housing are too small. They spool very fast and just thinking they might be causing excessive back pressure, what are you thoughts?
hard to say on a motor that "small". does it have a good flowing head/cam? you probably could make some more power with bigger housings but you'd be best off actually doing some calculations or talking to a supplier/manufacturer. how quickly is it currently spooling? where does it make full boost?
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