compression ratio help
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compression ratio help
Alright fellas, I have a hypathetical question. What would the compression be on an certain fe that has C4AE-G heads, 360 flat top pistons (std), 390 rods, 390 crank, fel-pro head gasket?
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Using this:
RSR Static Compression Ratio Calculator
and:
4.05 bore
3.78 stroke
rod 6.49
compression height 1.76
deck 10.17
combustion chamber 73.2
gasket .041
and NOT figuring the dish and/or valve reliefs in the piston:
10.04
Info from FE Cylinder Head I.D. and Application Chart
Note the chart shows a C4AE ----f, not a g. No g shown. See here re the "G":
https://www.ford-trucks.com/forums/928279-c3ae-g.html
http://www.kb-silvolite.com/assets/0...te_catalog.pdf
http://www.summitracing.com/search/B...c&autoview=SKU
+/- depending on the actual measurements, as all those numbers have a range in production and actual use.
If you have exact numbers, the calculator will give you a better number.
RSR Static Compression Ratio Calculator
and:
4.05 bore
3.78 stroke
rod 6.49
compression height 1.76
deck 10.17
combustion chamber 73.2
gasket .041
and NOT figuring the dish and/or valve reliefs in the piston:
10.04
Info from FE Cylinder Head I.D. and Application Chart
Note the chart shows a C4AE ----f, not a g. No g shown. See here re the "G":
https://www.ford-trucks.com/forums/928279-c3ae-g.html
http://www.kb-silvolite.com/assets/0...te_catalog.pdf
http://www.summitracing.com/search/B...c&autoview=SKU
+/- depending on the actual measurements, as all those numbers have a range in production and actual use.
If you have exact numbers, the calculator will give you a better number.
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