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Old 09-03-2007, 01:44 PM   #1
munroe
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vacume lines-what can i leave out and what do i need

gettin ready to finnaly put the 350 tbi/700r4 in my 87 c10. one big hang up im havin is what do i need to install for vaccume lines. i havnt been able to find any diagrams in the internet. the carbed 350 that is in the truck now was put in without vaccume lines being hooked up and nothing works correctly. so the question is what lines need hooking up and what ones can i leave out?
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Old 09-03-2007, 05:54 PM   #2
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Re: vacume lines-what can i leave out and what do i need

anyone?
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Old 09-03-2007, 05:56 PM   #3
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Re: vacume lines-what can i leave out and what do i need

The ones you definitely need is trans servo (if the 700r4 has one), vacuum advance, and if your climate control is vacuum. Also the power brake booster is a tad important. Does it have an EGR Valve?
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Old 09-03-2007, 06:00 PM   #4
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Re: vacume lines-what can i leave out and what do i need

prety sure it does. haha, i know how important the brake servo is, its not hooked up ritgh now and the brakes are a pain
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Old 09-03-2007, 08:22 PM   #5
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Re: vacume lines-what can i leave out and what do i need

You really don't NEED the egr valve connected, but for emissions purposes...
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Old 09-03-2007, 08:24 PM   #6
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Re: vacume lines-what can i leave out and what do i need

well, wont worry about that. we dont have testing here. if thats all i need its alot less painfull than i thought it would be
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Old 09-03-2007, 08:27 PM   #7
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Re: vacume lines-what can i leave out and what do i need

That should be all. I've got an 82 and that's all I have connected on it...
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Old 09-03-2007, 08:58 PM   #8
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Re: vacume lines-what can i leave out and what do i need

Fuel vapor canister too. Optional but recommended.
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Old 09-04-2007, 02:30 AM   #9
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Re: vacume lines-what can i leave out and what do i need

Yeah, forgot about that since mine is disconnected. But a good idea to have it hooked up...
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Old 09-04-2007, 10:40 AM   #10
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Cool Re: vacume lines-what can i leave out and what do i need

Here's what I used on my '80 K10.

One pic shows what i could take off. The other shows all I needed.

Hope this helps.

- Dave
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