Big Bore and Small bore pipes

[The Shocker]

How do you tell the difference?

I got 2 sets of pipes laying in the garage. Some CPI outerframes and Shearer's outer frames.

 

1.How can you tell the difference....

 

2.And as for big Bore...What size does the Big bore start when you actually need big bore pipes? Meaning when should you use a big bore pipe? I went from a 350 to a 7mill and i think 458 now...Do i need a big bore pipe now?

 

 

Thanks

Alan

[shanYE west]

How do you tell the difference?

I got 2 sets of pipes laying in the garage. Some CPI outerframes and Shearer's outer frames.

 

1.How can you tell the difference....

 

2.And as for big Bore...What size does the Big bore start when you actually need big bore pipes? Meaning when should you use a big bore pipe? I went from a 350 to a 7mill and i think 458 now...Do i need a big bore pipe now?

 

 

Thanks

Alan

 

I can tell the difference between the shearer's.. but I've never had CPI's so I cant tell ya on that one.. But.. withe the shearers... If you look at the neck right after teh flange.. their will be 2 stamp/weld sections before the expansion.. the big bores only use one stamp/weld section before the expansion.

 

 

There really isn't any point to where a bb pipe is needed over a small bore.. Alot of it depends on the porting.. My 4mil cub ran better with the big bores over small bores.. and I've heard of some 10mil cubs running better on the small bores over big bores.. Best thing to do is get with the builder and see what he recommends for pipes..