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356 pistons, 1955-63 vs 1963-66
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And
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Joined: March 03, 2006
Posts: 8
Location: Denmark
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PostPosted: Tue Mar 14, 2017 5:52 am    Post subject: 356 pistons, 1955-63 vs 1963-66 Reply with quote

Anybody in here who can tell, if there is any difference between the early and late type 86 mm 356 pistons from AA Pistons - except the angle of 22 and 30 degrees? If that is the only difference, it would be an fairly easy operation to machine my pistons from 30 degree to 22 degree.
1955-63 pistons
1963-66 pistons

Reason for all this BS is, that i took a chance ordering late/30 degree pistons/cylinders a few years back during a visit to US. Now i finally got to tear down the motor, and found that the combustion chambers are in fact the early type/22 degrees. Evil or Very Mad

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Jacks
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Joined: July 15, 2006
Posts: 1633
Location: San Clemente, Ca.
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PostPosted: Tue Mar 14, 2017 9:42 am    Post subject: Re: 356 pistons, 1955-63 vs 1963-66 Reply with quote

Cut to 22* and cut the pockets for the exhaust valve at least 1mm deeper.
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