Flycutting tool 
Flycutting tool
What heads are you going to be running? Valve size can/will make a difference on which cutter(s) you will need!
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Thread Starter
Launching!
Joined: Oct 2012
Posts: 219
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From: near Beech Bend race way
a set of 215 tsp or there PRC Stage 2.5 5.3L CNC Ported Heads
the 5.3s r more n my price but with my cam think i have to cut my pistions 58 thousand gasket with 62cc is smallest i can go. correct my if i'm worng , like the comp. ratio to be 11
the 5.3s r more n my price but with my cam think i have to cut my pistions 58 thousand gasket with 62cc is smallest i can go. correct my if i'm worng , like the comp. ratio to be 11
Thread Starter
Launching!
Joined: Oct 2012
Posts: 219
Likes: 0
From: near Beech Bend race way
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The pistons were cut installed in the block. You put the cutter in the head with piston at tdc.
The intake and exhaust contact the piston at different locations. That's why they are staggered.
Idk how much this would effect the balance.
The intake and exhaust contact the piston at different locations. That's why they are staggered.
Idk how much this would effect the balance.
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i did this on my stock bottom end LS6, raced it for 2.5 years, spun to 7000rpms no problems
At the point someone is going to pull the rotating assembly after cutting pistons to balance it, most folks would have just put an aftermarket piston with valve reliefs in the short-block and called it a day. I'd say the vast majority do not re-balance after cutting the pistons...whether that's right or wrong in your book you must decide.
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This would also help put you into an overbalanced situation. Not necessarily a bad thing. 52% would be about the limit for a street driven car, it will smooth the higher RPMs some with no effect in the lower rpm. Go beyond that and you will feel a vibration in the lower revs. This probably not even 1% change in balance.
