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Boosted engines create higher cylinder pressures which in turn require greater clamping force to hold the cylinder heads down. At some level of boost, the OE fasteners will fail and that will be a bad day. Studs versus bolts is a separate discussion for a later date. For now, we will stick to reviewing studs as they are far superior as a fastener type. We will use the LS engine as an example. Head stud upgrades to handle increasing boost can be summarized as “More”, “Better” & “Bigger” together with combinations thereof. "More" is going from an OE 4-bolt block...
Our product line of boosted engines uses turbos, twin screw and centrifugal superchargers to compress intake air (see pictures below). Many of our street performance customers are uncertain which power adder is best for them. There is no universal best choice. Their optimum solution depends on factors including: intended application, ease and cost of installation, longevity, personal preferences and space limitations to name a few considerations. We are often asked to explain the differences, pros and cons. The internal features of twin screws (bypass & intercooler) and their effects are often not well understood and will therefore be the primary...
This blog compares the features and benefits of LS and BBC engines with power adders for Pro Touring vehicle builds.
