Skip Navigation Links
Setup
New Post
Search
Forum Home
Home
Decoder

Original Message
428 build up - Low compression ratio
By Matt McCormick - 01/09/2003 7:43:24 PM; IP 24.52.204.110
Hope someone can help me.
I building a 1966 428 non cj to cj specs. The engine has been bored .30 over (had to) and Im planning to use C6AE-R heads with cj valves installed. Those heads have a 74cc chamber volume. Im having trouble finding a piston that will provide me with a 10.1 to 10.5 compression ratio. KB and JE pistons .30 over list between 9.1 - 9.8 comp ratio. and these are domed.
How is it that the stock piston (flat top) yielded 10.5-1 originally. Does anyone know where I might find a piston that works, or any other suggestions. I planned on using the stock rods thanks for the help.
Matt
This thread, so far...
Skip Navigation Links.
Collapse <b>428 build up - Low compression ratio</b>&nbsp;-- <font color=#0000ff>Matt McCormick, <i>01/09/2003</i></font>428 build up - Low compression ratio -- Matt McCormick, 01/09/2003
Collapse <a href=../ForumFE/reply.aspx?ID=15968&Reply=15967><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor15968" onclick="return false;">Stick with 9.5</a>&nbsp;-- <font color=#0000ff>John, <i>01/09/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=15968', contentMargin: 60, icon: $('anchor15968') }); </script>  Stick with 9.5 -- John, 01/09/2003
Collapse <a href=../ForumFE/reply.aspx?ID=15989&Reply=15967><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor15989" onclick="return false;">RE: Stick with 9.5 / Here is what I did</a>&nbsp;-- <font color=#0000ff>Alan Casida, <i>01/11/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=15989', contentMargin: 60, icon: $('anchor15989') }); </script>  RE: Stick with 9.5 / Here is what I did -- Alan Casida, 01/11/2003
Collapse <a href=../ForumFE/reply.aspx?ID=15997&Reply=15967><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor15997" onclick="return false;">RE: Stick with 9.5 / Here is what I did</a>&nbsp;-- <font color=#0000ff>Matt McCormick, <i>01/12/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=15997', contentMargin: 60, icon: $('anchor15997') }); </script>  RE: Stick with 9.5 / Here is what I did -- Matt McCormick, 01/12/2003
 Gasoline and CR -- John, 01/12/2003
 RE: 428 build up - Low compression ratio -- Royce Peterson, 01/09/2003
Collapse <a href=../ForumFE/reply.aspx?ID=15991&Reply=15967><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor15991" onclick="return false;">Did the same with mine</a>&nbsp;-- <font color=#0000ff>x1968x, <i>01/11/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=15991', contentMargin: 60, icon: $('anchor15991') }); </script>  Did the same with mine -- x1968x, 01/11/2003
Collapse <a href=../ForumFE/reply.aspx?ID=15998&Reply=15967><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor15998" onclick="return false;">RE: Did the same with mine</a>&nbsp;-- <font color=#0000ff>Matt McCormick, <i>01/12/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=15998', contentMargin: 60, icon: $('anchor15998') }); </script>  RE: Did the same with mine -- Matt McCormick, 01/12/2003
Collapse <a href=../ForumFE/reply.aspx?ID=16006&Reply=15967><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor16006" onclick="return false;">Parts</a>&nbsp;-- <font color=#0000ff>x1968X, <i>01/12/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=16006', contentMargin: 60, icon: $('anchor16006') }); </script>  Parts -- x1968X, 01/12/2003
 Forgot to add -- x1968X, 01/12/2003
 RE: 428 build up - Low compression ratio -- Geoff McNew, 01/18/2003
Post A Response
Name:
Email Address:
Subject:
Post:
Upload Image:
Human Check:   Enter the code 2024234559 in the box