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Hey guys I am 15 and I am working on my first truck... I have a 1985 f150, 351w 4x4..... I am installing a edelbrock 1406 and I am having clearance problems... the first thing in my way is this THING I can't figure out what it is... It's on the intake manifold on the right side, it blocks my throttle assembly and I really need to take it off.... On the other side beside my carb there is I think a metal VACCUM line, so someone plz help me idk what to do.. Thx u guys
Not trying to be rude, just trying to explain what will GREATLY help you. Nobody here can see what you're talking about, so do something to help us help you, OK?
Send me your pictures at my-userid at yahoo dot com and I'll put 'em up for you. But you should really learn how to do this yourself, the instructions are all nice and written out for you, with pictures.
Here is a bit from the Tech Tips sticky at the top of this forum:
Forum Etiquette
Please, most of us here are old-school and do better with proper capitalization & punctuation & grammar in written text. So, please don't type in Text-ese shorthand (im, id, iv, etc.) and you'll likely get a much better reception and more help from the guys, OK?
Looks to me like a valve that controls exhaust flow beneath the carb to heat up the area for faster warm-ups in the wintertime.
Here is one of the things that concerns me... in 1985, the most common engines were computer-controlled... either with a Feedback Carburetor or EFI.
You cannot replace a feedback carb with a non-feedback variant without the computer freakin' out and putting the engine into limp-home mode (which means low power (no ignition timing advance) and crappy gas mileage).
Are you sure you don't have the feedback setup from the factory?
I'm confusing you, I'm sorry... It's not EFI if you have a carburetor.
But, do you have a computer-controlled carburetor?
The sixes and 302s had them, the 351W 4-barrel carb had the Duraspark ignition without the feedback carb.
I'm not sure about the 351W 2-barrel carb, though.
Do you have one of these on your driver's side wheel cover?:
That's the Duraspark ignition module. May not look exactly like those but a box that size with two round electrical connectors. If so, you don't have a computer-controlled carb.
Do you have a small box on your distributor with colored wires going to it?:
That's the TFI ignition module. If you have that, you have a computer-controlled carburetor.
In 85 the 302 was EFI but the 6 and the 351w were carb'd. The 351w was available both with the 2bbl and 4bbl carb. The 4bbl has the duraspark II, I don't know about the 2bbl.
Does your truck have a 2bbl carb? Are you installing the 4bbl with an adapter? What is the 8th digit of your Vin? G is the 2bbl, H is the 4bbl.