air intake/snorkle size ??

[BigFrank]

what size material should be used  ??  or better yet how small is too small  was thinking about using some 3 inch schedule 20 pvc would this size restrict the flow of air to much??

[frdzila]

on my 351 I have 2 2.75 pvc tubes going in to the intake plentum. if you are running a carb get a throttlebody boot from a v8 cadillac they will fit a carb and have a 4in diameter hole. the only probly is buying an air filter. when you get into the 4in sizes they can get pricey

[xjs3667]

that should be fine, but It all depends on what size engine you have and how much power your making, you will know right away if it is to small as it would starve your engine from air and you would defiantly notice the power difference. 3'' should do you just fine tho.

[Blazin40s]

Run sch 40 3in.  Or 4 if u can

[betterbeaters]

dual 3" pipes