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Tech & Fab
My first LS build
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<blockquote data-quote="mna0121" data-source="post: 399593" data-attributes="member: 2868"><p>Only getting to work on the LS one day a week. Made a little progress today, it doesn't look like much but six hrs. of work today except for taking a break to hear JR's LS, 900+ hp Vet wake up the neighborhood. The day was dedicated to file fitting rings, checking bearing clearances, rod to rod clearances, piston in block fitment and mating pistons to rods. Patooyee was on hand again today and took on one of the most aggravating task of assembling an LS, inserting the spiral locks in the pistons. Like everything else he does he mastered the process very quickly and assembled seven pistons in less than a half hour, thanks JJ. One piston was left apart to use it to square the rings in the block. While JJ tackled the locks JR and I file fitted the rings all of which except the expander had to be filed. We opened the top ring to .020, 2nd .022 and at least .010 on the scrapers. I can add a little boost with that gap if I ever want to. All the clearance spec's. were all well within allowances and rod bearings were at .0015. I will add pictures in order of our progression. I did not get any of Patooyee wrestling with those locks because JR and I were busy filing the rings so I will get those next time. I have a set of CNC Trick Flow heads for this build. JR is a head porting fool so he worked his magic on the heads even though they are CNC. I really didn't think it would make a difference, boy was I wrong, they are slick. But, two valves did not lap in properly so off to a head shop for suspected bent valves, turns out just a seat issue and are on their way back. Didn't want to put pistons in until piston to valve clearance is checked just in case valve reliefs have to be massaged. If we get the heads back will likely get pistons in the block Thursday.</p></blockquote><p></p>
[QUOTE="mna0121, post: 399593, member: 2868"] Only getting to work on the LS one day a week. Made a little progress today, it doesn't look like much but six hrs. of work today except for taking a break to hear JR's LS, 900+ hp Vet wake up the neighborhood. The day was dedicated to file fitting rings, checking bearing clearances, rod to rod clearances, piston in block fitment and mating pistons to rods. Patooyee was on hand again today and took on one of the most aggravating task of assembling an LS, inserting the spiral locks in the pistons. Like everything else he does he mastered the process very quickly and assembled seven pistons in less than a half hour, thanks JJ. One piston was left apart to use it to square the rings in the block. While JJ tackled the locks JR and I file fitted the rings all of which except the expander had to be filed. We opened the top ring to .020, 2nd .022 and at least .010 on the scrapers. I can add a little boost with that gap if I ever want to. All the clearance spec's. were all well within allowances and rod bearings were at .0015. I will add pictures in order of our progression. I did not get any of Patooyee wrestling with those locks because JR and I were busy filing the rings so I will get those next time. I have a set of CNC Trick Flow heads for this build. JR is a head porting fool so he worked his magic on the heads even though they are CNC. I really didn't think it would make a difference, boy was I wrong, they are slick. But, two valves did not lap in properly so off to a head shop for suspected bent valves, turns out just a seat issue and are on their way back. Didn't want to put pistons in until piston to valve clearance is checked just in case valve reliefs have to be massaged. If we get the heads back will likely get pistons in the block Thursday. [/QUOTE]
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