306 Vs 302

[Cobra_Dusten]

Whats the difference, other than 4 CI?

 

[DMAN302]

1-2HP maybe...bore is increased to clean up the walls when rebuilding a block. No real increase performance wise.

 

[tjm73]

Whats the difference, other than 4 CI?

No difference. It's purely academic IMO. Some 302 engines with the exact same parts will make more power than a .030" over 306. The differerence is just too small to matter in the real world.

 

[Cobra_Dusten]

that is what i figured, similar to a 350 SBC vs a 355.

 

[srothfuss]

A 306 will be newer than a 302 (realitivly speaking) so your bearing clearances will be tighter, your oil pressure should be better... But those things don't make any extra Horsepower.