Horsepower gains with .20 over Bore

[gravey32]

Just curious, what you think gains will be horsepower with a .20 bore with new pistons


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[Blakonblak94]

Depends on if the compression is changed significantly.

 

[mustangted06]

none

 

[gravey32]

None at all? whatt?

 

[mustangted06]

no hp gain

 

[Parts-is-Parts]

+ 1,000,000 on NONE.

 

[Shadow Grey 03]

It depends on if the rings were garbage. Might pick up some if they were.

 

[horspla2000]

less than 5. Virtually none

 

[ctgreddy]

x2. it always cracks me up when people say oh my motors bored 20 or 30 over so it makes more power than normal. WRONG. unless compression was raised, then there will be no change assuming the motor was in good working condition before.

 

[98 Saleen Cobra]

LMFAO at this thread hahahahahaha!!!! NONE

 

[Brutal Metal]

Mine made LESS N/A cause I went with a lower than stock compression piston cause I knew a Blower would be installed down the road..

 

[Quick Strike]

With no other changes in our 4.6L, a .02" overbore gives you a 0.01 increase in compression ratio and a two CI (283) increase in size.

 

[gravey32]

what do you think a good price of doing that and putting in new pistons and rings should be....?