Questions about some Milled heads
12-29-2007, 10:49 AM
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Questions about some Milled heads I have a chance of getting some milled 5.3 heads, milled 30. What would the compression be afterwards and would it clear a TR 230 reverse split cam? Thanks let me know.
12-29-2007, 02:47 PM
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Go here https://ls1tech.com/forums/advanced-engineering-tech/394937-updated-valve-event-dcr-scr-header-length-spreadsheet.html plug your values into the spread sheet you can download. Really useful tool.
12-29-2007, 03:05 PM
#3
We're gonna need a little more info than that! Usually for these LS engines, it seems every .006" milled is worth about a cc. So, whatever 5.3 heads are stock, take off 5cc's and that's gonna be pretty close. It'd be better to just cc them yourself or ask a local machine shop to do it. There's a bunch of compression calculators all over the internet so I'm sure you can take it from there.
12-30-2007, 01:05 AM
#4
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It is about .005/.006 per CC mill
As far as clearing safely a TR230 111, I doubt it, but only real way to tell is measure, but I would say no on intake side (depending on valve size and if valves recessed or no).
As far as clearing safely a TR230 111, I doubt it, but only real way to tell is measure, but I would say no on intake side (depending on valve size and if valves recessed or no).
