Hi Guys!
Imperially challenged here
1 thou ie 0.001 of an inch 
So stock slant bore is 3.401 3thou oversize would yield 3.404?
BTW what is the max a slant can be bored oversize? that pistons are available for?
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| Imperially challenged https://www.slantsix.org/forum/viewtopic.php?t=32839 |
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| Author: | 68barracuda [ Tue Dec 16, 2008 7:51 am ] |
| Post subject: | Imperially challenged |
Hi Guys! Imperially challenged here 1 thou ie 0.001 of an inch So stock slant bore is 3.401 3thou oversize would yield 3.404? BTW what is the max a slant can be bored oversize? that pistons are available for? |
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| Author: | Reed [ Tue Dec 16, 2008 8:05 am ] |
| Post subject: | |
You have your math correct. I believe Chrysler said the largest a slant could be overbored was 40 thousandths, or 3.440 total. That being said, there have been several known successful race motores bored to 3.5. 
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| Author: | SlantSixDan [ Tue Dec 16, 2008 8:11 am ] |
| Post subject: | |
Stock bore is 3.400. Common oversizes are 0.010" (3.41"), 0.030" (3.43"), 0.040" (3.44", same bore as Chrysler's 2.2 and 2.5 litre 4-cylinder engines, opens piston availability options), 0.060" (3.46"). These, however, are not the only oversizes possible. By spending time in piston and ring catalogues, you can come up with almost whatever you want. Boring 0.10" over (3.50") makes a whole whackload of Chevrolet pistons available, but only particularly carefully cast engines can support such a large overbore; sonic checking is necessary. (...and then there's the mysterious "906" block casting from Argentina, specifically made to support very large overbores...) |
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| Author: | 68barracuda [ Tue Dec 16, 2008 8:13 am ] |
| Post subject: | |
Argentina is a mystery - special over bore blocks, those funky cast headers |
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