April 27, 2005im 13and have a gmc high sierra 1500 with a 305 in it.my dad passed the truck down to me and im trying to fix it up. my problem is that i think my carb is bad.i have checked the feul pump and feul lines and its all working good.so I dont know whether to buy a carb from or a junk yard or rebuild the one ive got what would you do?please help
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April 27, 2005go to oreilly's and buy a holley 650 that has been rebuilt for about $135 and slap it on. you will have alot less problems with it than with the (I assume) Rochester that is on it. Not to mention it will be easier to tune and work on.
You will spend about $100 on having the existing one rebuilt, so you might as well get a better carb for just a little more. You won't regret it.
If you have it rebuilt, take it to a carb rebuilding shop or send it off. Don't have just any ol' joker do it or you will constantly have problems with it.
January 8, 2006Those old chevy's are great trucks.
I work on many vechicals. And a remanufactured carb will save you many headaches in the long run.
Just have someone help you tune it in initually.
Something you may want to try with your old carb is to tear is apart in a organized maner. Then without replacing the seals put it back together.
After taking things apart three or four times I find that I can get a feel for rebuilding them.
I started with a old Q-jet that was rusted out then moved to a 350 transmission with a broken belhousing.
Then a 205 transfer case with bad seals. Then a inline 2.5 then a inline 300 then a 302 then a roatery engine then a inline five engine.
It is just a hobbie they were all junk in a way. And I did one at a time focasing on that object rebuild and taking it apart until I feel that I know how it works then I throw it away and look for another.
It is a great way to learn "hands on".
It is like welding you can read about it all day but until you put a bead on a piece of steel you haven't welded a thing.