how come people stick to a 224 in a 5.3?
08-24-2009, 12:43 PM
#44
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I use a DCR Calculator designed by "Pat Kelly". I either downloaded it via the cam stickies or "Google".
A few others have designed an easy Excel program you can also use.
It is just a calculation that utilizes the concept that [compression can not really start until the intake valve closes completely..so the earlier the intake valve closes normally the higher the DCR...] Obviously you can have too much DCR..and nothing but detonation.
That is the short story. There is a lot of great reading in the cam theory stickies that will really open your eyes.
Hope that helps.
..WeathermanShawn..
A few others have designed an easy Excel program you can also use.
It is just a calculation that utilizes the concept that [compression can not really start until the intake valve closes completely..so the earlier the intake valve closes normally the higher the DCR...] Obviously you can have too much DCR..and nothing but detonation.
That is the short story. There is a lot of great reading in the cam theory stickies that will really open your eyes.
Hope that helps.
..WeathermanShawn..
08-24-2009, 10:01 PM
#45
This is the one that I have always used, it really doesn't get any easier than this!
My DCR Calculator - If you have a Comp grind, it doesn't get any easier than this...
My DCR Calculator - If you have a Comp grind, it doesn't get any easier than this...
10-20-2009, 12:14 PM
#46
http://www.camaroperformers.com/cama...ine/index.html
This is the best link I found to do with these motors.
This is the best link I found to do with these motors.
02-22-2010, 05:32 PM
#47
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I know this threads alittle old but I didnt really understand about the flat top 5.3 pistons. I have a 03 5.3 and bought some flat tops for it, I want to put a 228r cam in it, how much should i mill the heads?
03-19-2010, 01:01 PM
#49
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If you took a stock III gen 5.3 with the dished pistons and milled the 243 heads .030 and used the .040 gasket, wouldn't your CR be 10 to 1 or 10.5 to 1? In that case wouldn't the 228r cam be the perfect choice?
03-19-2010, 01:36 PM
#50
Compression would be 10.2:1 with that setup. I still would use a 224/224 cam, but a 220/224 would be even better. In something that weighs 3000-3200lbs I might consider a 224/228. It depends on the desired use of the vehicle, but if driving on the street is intended you will need the bottom end power and driveability of the more conservative cam.
