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Posted

alright I did a search and found that the stock bore on banshees is 64mm but what is the stroke? is the .30 over 3mm or what does that mean? I just need an answer quick. Thanks.

Posted

I know the stock stroke is 54 mm. Now the .3 over means 3 tenths of sumthin over, it might mean 3 tenths of and inch , which i doubt, it prob would mean 3 tenths of a mm, but i coudlnt tell you for sure.

Posted

Yes stock bore is 64mm and stock stroke is 54mm = 347cc

 

First overbore size is .010" or .25mm, that makes 64.25mm bore and 350cc...when someone says "thirty over", it means that's the third overbore from stock, or .030" larger. Check out wiseco.com for the chart:

 

displacement, bore size, oversize(mm), oversize(inches):

347 64.00 0.00 0.000

350 64.25 0.25 0.010

352 64.50 0.50 0.020

355 64.75 0.75 0.030

358 65.00 1.00 0.040

361 65.25 1.25 0.050

364 65.50 1.50 0.060

370 66.00 2.00 0.080

376 66.25 2.25 0.090

382 66.50 2.50 0.100

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