327 question
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Cruising
Joined: May 2005
Posts: 11
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Originally Posted by BarryK
Milkdud
step 1: swap cam for stock one
step 2: swap distributor for a vacum advance model
step 3: readjust valves
step 4: read the articles John sent you on re-mapping your advance curve and than re-set the timing on the car
step 5: test motor and if it's still not right than post back.
I hate to say it but I think you are trying to fix the problem by avoiding the difficult steps of the cam and distributor issues first and you probably won't get too far that way.
step 1: swap cam for stock one
step 2: swap distributor for a vacum advance model
step 3: readjust valves
step 4: read the articles John sent you on re-mapping your advance curve and than re-set the timing on the car
step 5: test motor and if it's still not right than post back.
I hate to say it but I think you are trying to fix the problem by avoiding the difficult steps of the cam and distributor issues first and you probably won't get too far that way.
1) that'll cost 100 bucks in gaskets and im trying to avoid that right now
2)the old distributor is in, (the vac advance one)
3)valves had been readjusted at leaast 10 times per valve (we are not at 1/2 turn from clack
4)remapping the distributor wont stop half the cyl. from "igniting" , there is spark, but no ignition
5)tested, and have figured its not the plugs, it must be a fuel/air problem, so i just bought a new holley, and we'll see how that runs
as to your other replay, yes i do know there are alot of knowledgable people out there. but there are also alot of people that are under the thought that if it aint stock it aint right, which i believe is not true. i think the problem has been the carb the whole time since that is the only thing that i havn't looked into (and partly because i dont have the knowledge and experience) but im hoping to learn! i will bet my paycheck that it isn't a timing issue (this thing has been timed by 4 different firends, all ending up on the same deg advanced.
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You were correct to notice that every other cylinder in the firing order is not working at idle. I would bet that after you bring theRPM's up that they would begin to fire.
In every two or four barrel carb each barrel of the carb will fire every other cylinder in the firing order. So if, as in your case, every other cylinder is not working, you have a pluged idle jet on one side. Just take some carb cleaner and squirt a small amount in each front barrel, one side should slow the engine down and the other side should increase dramatically.
If you look at a stock manifold and follow the runners you will see one side feeds two inside cylinders on one side and two outside cylinders on the other side. The other side of the carb does the opposite ones.
If it is a Carter carb just remove the top, place it upside down on a bench, then remove the boost venturi assembly on the bad side and you will see the small idle jet at the bottom of the long brass tube. Just blow the obstruction out with some compressed air from the top of the boost venturi air bleed hole. I have found everything including a fly's wing stuck in them.
This way no two consecutively firing cylinders will pull from the same barrel.
In every two or four barrel carb each barrel of the carb will fire every other cylinder in the firing order. So if, as in your case, every other cylinder is not working, you have a pluged idle jet on one side. Just take some carb cleaner and squirt a small amount in each front barrel, one side should slow the engine down and the other side should increase dramatically.
If you look at a stock manifold and follow the runners you will see one side feeds two inside cylinders on one side and two outside cylinders on the other side. The other side of the carb does the opposite ones.
If it is a Carter carb just remove the top, place it upside down on a bench, then remove the boost venturi assembly on the bad side and you will see the small idle jet at the bottom of the long brass tube. Just blow the obstruction out with some compressed air from the top of the boost venturi air bleed hole. I have found everything including a fly's wing stuck in them.
This way no two consecutively firing cylinders will pull from the same barrel.
Thread Starter
Cruising
Joined: May 2005
Posts: 11
Likes: 0
Originally Posted by plaidside
You were correct to notice that every other cylinder in the firing order is not working at idle. I would bet that after you bring theRPM's up that they would begin to fire.
In every two or four barrel carb each barrel of the carb will fire every other cylinder in the firing order. So if, as in your case, every other cylinder is not working, you have a pluged idle jet on one side. Just take some carb cleaner and squirt a small amount in each front barrel, one side should slow the engine down and the other side should increase dramatically.
If you look at a stock manifold and follow the runners you will see one side feeds two inside cylinders on one side and two outside cylinders on the other side. The other side of the carb does the opposite ones.
If it is a Carter carb just remove the top, place it upside down on a bench, then remove the boost venturi assembly on the bad side and you will see the small idle jet at the bottom of the long brass tube. Just blow the obstruction out with some compressed air from the top of the boost venturi air bleed hole. I have found everything including a fly's wing stuck in them.
This way no two consecutively firing cylinders will pull from the same barrel.
In every two or four barrel carb each barrel of the carb will fire every other cylinder in the firing order. So if, as in your case, every other cylinder is not working, you have a pluged idle jet on one side. Just take some carb cleaner and squirt a small amount in each front barrel, one side should slow the engine down and the other side should increase dramatically.
If you look at a stock manifold and follow the runners you will see one side feeds two inside cylinders on one side and two outside cylinders on the other side. The other side of the carb does the opposite ones.
If it is a Carter carb just remove the top, place it upside down on a bench, then remove the boost venturi assembly on the bad side and you will see the small idle jet at the bottom of the long brass tube. Just blow the obstruction out with some compressed air from the top of the boost venturi air bleed hole. I have found everything including a fly's wing stuck in them.
This way no two consecutively firing cylinders will pull from the same barrel.
got any tips on how to get this holley tuned up right? the car fires up, revs to like 2000 and then quits, even when playing with the throttle keeping it alive, its very hard. ive been playing around with the mixture, and the idle screw, and cant find a spot where it'll stay afloat..... (as you can tell im not a carb man.... i stick to my protiens) lol
