Harley-Davidson Motorcycles

# How do you convert a 76 shovel head to 81 CI?

###### Wiki User

###### 2011-11-26 23:30:53

If you have a 74 inch engine to start with, you can install 80"

barrels on it but this would bring down the compression so low you

wouldn't be able to ride it. This would be basically the same as

boring out the 74" barrels .060 (IF the 80" barrels are standard

bore!) But your 74ci engine would only be about 76ci. To convert

your 74" to a true 80" you would need to change the flywheels to

gain the additional stroke length. (4.25 for 80" as compared to 3

31/32 for the 74").

emperor norton

## Related Questions

###### Asked in Math and Arithmetic

### What equals to 7 6x 9x 9?

This is poorly typed, so I will assume you mean "what does 76 *
9 * 9 equal?"
This can be done with a calculator or by hand. (* = multiplied
by)
By hand you would simply do long multiplication of 76 * 81
(since you should know that 9 squared is 81)
Note that on each line, everything in bold represents the same
number (which equals 5670) and everything in italics represents the
same number (which equals 486)
76 * 9 * 9 = 76 * 81
= (70 * 81) + (6 * 81)
= ((70 * 80) + (70 * 1)) + ((6 * 80) + (6 *
1))
= (5600 + 70) + (480 + 6)
= 5670 + 486
= 6156