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2 bbl on a 232 in a 69 Gladiator

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tomj View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Sep/28/2016 at 2:42pm
i stopped buying holleys years ago due to the power valve nonsense. one backfire blows them out. there's allegedly a fix for that now but i was done before that happened. i mention my worthless opinion only because -- yeah, a bad power valve will dump fuel and it won't idle, but also, plenum and runner and flow issues aside, none of that stuff matters at idle, only at notable flows. at 600 rpm six is pumping well under 40 CFM with the throttle wide open, insignificant flow with closed throttle idling.

if you hare having chronic lifter-tick problems on a fresh engine, it could be issues with some combination of deck height changes from machining, reground valves whose tips are too high, etc. hydraulic lifters can compensate for a lot, but there's limits...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Sep/28/2016 at 5:39pm
You could have an exhaust leak. The intake and exhaust manifolds should be torqued in a certain manner. If you have the old type with the manifolds bolted together, loosen all the bolts INCLUDING the four holding the manifolds together. Start tightening in the middle and work your way out to each end. Middle, next out toward one end, next out on the OTHER end, etc., until you reach each end. THEN tighten the four holding the manifolds together. Not doing that can leave a leak. Also check the header pipe to manifold connection.
Frank Swygert
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 69gladiator Quote  Post ReplyReply Direct Link To This Post Posted: Sep/28/2016 at 6:44pm
I probably should have started a new thread. My son and I got all the 2bbl issues straightened out pretty quickly. We are frustrated that a good deal of money was spent and the engine is ticking.So far they haven't charged me for anything, other then $32 for the pushrods. The machine shop did not bring up an exhaust least leak ( I figure they would have, if it got them off the hook !) I will re -torque the exhaust manifold but I really don't believe that its the source of the tick.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vinny Quote  Post ReplyReply Direct Link To This Post Posted: Sep/28/2016 at 9:33pm
Does it have a rocker shaft and arms? If so then make sure the front rockers are getting oil. Look through the oil filler cap. If run dry in the past you may have rocker shaft wear. The PO of my rescue engine had worn out more than one shaft and in frustration from the same problem I finally put on an overhead oiler. It's nice and shiny from fresh oil in there now.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 69gladiator Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2016 at 11:47am
When the machine shop had the truck, they removed the valve cover and found adequate oil flow.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 69gladiator Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2016 at 11:50am
Would it be beneficial to remove the valve cover and try oiling the rockers with an oil can as the engine is running? This may determine if the flow is good. Just a thought.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vinny Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2016 at 12:24pm
Yeah if you take the cover off you will be able to tell which one is ticking and if there is adequate oil flow.

You haven't replied yet if it has a shaft or not.

I thought by turning a worn shaft over and drilling the holes all the way through I could get another go around but couldn't find a drill bit to cut it. Those original shafts are hard but they do need oil. The rocker bushings of course also wear. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 69gladiator Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2016 at 1:55pm
It's a shaft type. I am not sure it they replaced the bushings when the motor was rebuilt.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 69gladiator Quote  Post ReplyReply Direct Link To This Post Posted: Dec/05/2016 at 2:44pm
Still making a rocker noise. Yes, to an earlier question regarding a rocker shaft. Went back to the shop today and they said:" i am too busy this week " to go for a ride to hear the noise. Not too optimistic that they are going to make good on this. A mechanic listened today and feels its in the rockers. Funny thing, during the holiday weekend my sone was home and drove the truck the whole weekend. He said for a few hours the noise stopped. The machine shop said its impossible to happen. Im not the greatest mechanic but I cant buy that it cant be intermittent. If he knows that fact he should know the exact cause. If I didn't spend $2000 Id just repower with a 4.0 an upgrade the drive train.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Dec/06/2016 at 6:38am
Something like rocker noise usually stays if it is due to wear. Have you checked the bolt that feeds the rocker shaft? http://www.mattsoldcars.com/RestoreAmerican/boltmod.shtml

The shaft itself may need to be replaced. To check for excessive movement of the rockers on the shaft you will need to remove the shaft to take all pressure off the rockers. They should rotate on the shaft easily, but should have little to no diagonal motion... very little twist front to back (with shaft oriented as if installed). If they are loose it's usually the shaft that is worn, but could be the hole through the rocker. You can get just the shaft or a rebuilt assembly. Or just make sure you're getting oil and live with it. It's not going to come apart, just have a little tick at low speeds. At higher rpm it may be getting enough oil to quiet down or stop, but most likely just quiets some and other noises (wind, road, engine, etc.) drown it out... it doesn't really stop.

The only other possibility I can think of is a weak lifter. If the engine was rebuilt and lifters replaced that's not likely, but you can get a bad lifter or trash in a good one... Try an engine oil flush.
Frank Swygert
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