Yet another 5.3 lm7 swap question
02-07-2011, 09:32 PM
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Yet another 5.3 lm7 swap question Hey I've been looking at gettin a LM7 for an older Chevy truck. I have been looking into the heads. Thinkin 243's are the way to go. The stock LM7 head is 61.15cc with a 9.5:1 CR and from what I understand if you take and mill down 243's .020 you end up with the roughly the same chamber and the same CR.
If you take a set of 243's and mill it down .030 isnt it around 58cc?
what would that bring the CR to on a 5.3l engine?
10:1?
Will most likely wait until I find a pair already ported and milled.....
If you take a set of 243's and mill it down .030 isnt it around 58cc?
what would that bring the CR to on a 5.3l engine?
10:1?
Will most likely wait until I find a pair already ported and milled.....
Last edited by 91_rs-teal; 02-07-2011 at 10:45 PM.
02-07-2011, 09:35 PM
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Also was looking at cam's... what cams are out there for a ls base engine that isn't a 6k+ screamer? more for the torque 4k area?
http://www.summitracing.com/parts/CCA-54-600-11/
will this work?
Does intake matter as far as how much torque u end up with?
truck intakes keep a little more torque?
or a ls6 intake for the extra HP up top the way to go?
http://www.summitracing.com/parts/CCA-54-600-11/
will this work?
Does intake matter as far as how much torque u end up with?
truck intakes keep a little more torque?
or a ls6 intake for the extra HP up top the way to go?
Last edited by 91_rs-teal; 02-07-2011 at 10:24 PM.
