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Old 01-25-2015, 08:50 PM   #1
kjdolphins
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5.3 and flat top pistons

Ive got an Lm7 engine that needs new pistons, and I figured I'd just go with some flat tops. Now is there anything special I need to know before going about this? Are there any different dimensions between say the 4.8's which came with stock flat tops, and the 5.3's which are dished? I know this will through the compression up to 10.4:1 or around there and I"m good with that ...
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Old 01-25-2015, 08:59 PM   #2
72 Copper C-10
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Re: 5.3 and flat top pistons

The dimensions are the same for Pistons, you can put a 5.3 crank in a 4.8 and you have a high compression 4.8
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Old 01-25-2015, 09:02 PM   #3
mooseknuckles
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Re: 5.3 and flat top pistons

there's a youtube vid where buddy swapped the flat tops outta 4.8 into a 5.3...
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Old 01-25-2015, 11:16 PM   #4
davidfre21
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Re: 5.3 and flat top pistons

After like 05, the 5.3s started coming with flat tops
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