compression ratio help
Thread Starter
|
Senior User
Joined: Nov 2005
Posts: 176
Likes: 0
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?
Super Moderator
Joined: Apr 2004
Posts: 34,472
Likes: 2,799
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.
Thread
Thread Starter
Forum
Replies
Last Post
Frankinstine
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
20
May 30, 2014 02:46 PM
Riderman
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
33
Nov 26, 2009 08:42 AM
71LTD390
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
10
Apr 13, 2004 10:12 PM
gktbay
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
7
Aug 19, 2003 06:00 AM
dhickey
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
6
Oct 18, 2002 06:20 PM
