Replace all the vacuum lines- how much and what sizes?

[Laid GP]

I am sure that my truck has vacuum leaks due to age so I would like to go ahead and replace all the hoses. Just curious how much and what sizes of hose I should buy? Any benefit to silicone over the regular rubber hoses?

It's a 95 with TBI 350.

 

[biga1987]

just take all of the old ones off and take them with you and get identical ones. the counter help person will probably hate you but hey its their job to assist you so thats my $0.02