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SN95 Cobras
What Compression with Boost?
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<blockquote data-quote="Toasty" data-source="post: 7868817" data-attributes="member: 39823"><p>Read 98 Saleens post again.</p><p></p><p>A centri blower works best with close-to-factory compression ratio. Flatop pistons in a rebuild will get you close to 10:1 compression.</p><p></p><p>Turbo and PD blowers like lower compression, 8.5:1 to 9:1 are common ratios in these applications.</p><p></p><p>Asking 'what everyone tends to run' is a misguided question. There are people like me with a KB, centri, or turbo on a stock shortblock (so 9.8:1 or so compression), and there are people with built shortblocks running the appropriate boost for their SC application.</p><p></p><p>You dont pick the compression ratio and then pick the blower/turbo afterwards. You design the engine parameters around your forced induction choice.</p><p></p><p>FYI, 03-04 Cobras have 8.5:1 compression to make the most out of their factory Eaton setups.</p></blockquote><p></p>
[QUOTE="Toasty, post: 7868817, member: 39823"] Read 98 Saleens post again. A centri blower works best with close-to-factory compression ratio. Flatop pistons in a rebuild will get you close to 10:1 compression. Turbo and PD blowers like lower compression, 8.5:1 to 9:1 are common ratios in these applications. Asking 'what everyone tends to run' is a misguided question. There are people like me with a KB, centri, or turbo on a stock shortblock (so 9.8:1 or so compression), and there are people with built shortblocks running the appropriate boost for their SC application. You dont pick the compression ratio and then pick the blower/turbo afterwards. You design the engine parameters around your forced induction choice. FYI, 03-04 Cobras have 8.5:1 compression to make the most out of their factory Eaton setups. [/QUOTE]
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What Compression with Boost?
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