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Print in friendly format Send this term to a friend  Mouse Motor
GM production small block engines were known as Mouse motors.

Early SBC

4.3L 265ci - 1955 thru 1956
4.6L 283ci - 1957 thru 1962
4.9L 302ci - ...
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ninetyfivevette Scuffs on fresh bores
Guru Newb
Rhode Island
81 Posts
Member since:
2007/12/31 0:00



Offline
I enhanced the colors and brightness to make these show better- they don't catch your finger.

Only 300 miles of use. Think this is something to worry about?

PIC
Posted on: 2008/3/14 0:07
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Notorious Re: Scuffs on fresh bores
Elite Guru
Downbound train, NC
2184 Posts
Member since:
2005/9/17 0:00



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It's hard to tell for sure from pics but I don't like it. Can you feel them at all with a fingernail? What does the piston look like? What was the reason for tearing it back down?
Posted on: 2008/3/14 1:01
_________________
I hate sporks...
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ninetyfivevette Re: Scuffs on fresh bores
Guru Newb
Rhode Island
81 Posts
Member since:
2007/12/31 0:00



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They are very light scuffs, they do not catch a finger nail.

The pistons were clean, after I cleaned off all the unburned fuel residue. It was running a bit rich and I couldn't keep it running good enough, long enough to fine tune my PCM4Less tune, much less drive it down to TJWong for him to work on.

I had to tear it down because the head bolts were not torqued down and the head gaskets were leaking. The builder swears he torqued them down...
Posted on: 2008/3/14 4:00
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