difference? 416 or 426

[nazman01]

ok sow whats the diffrence betweenm the two? why doesnt everyone just go with the 426? OK so what should i get and why?416 or 426, all imdoin is a hot cam stage one, kn filter, t4 slip on. What will i gain from stock to 416 or 426? I plan on ordering it soon, so soem good advise would help. thanks

[methyman]

416 is .080 over on your stock sleeve and 425 is .120 over on your stock sleeve which is very thin. It tends to run a little hotter and its also the last bore on your stock sleeve. Just leave it stock bore and higher compression piston with some port work done to the cylinder head and it will run great.