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Original Message
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| Valve Train Question - Long |
| By Al C - 04/02/2004 7:24:12 PM; IP 69.29.12.37 |
| A couple of months back I posted a question reguarding a valve problem I had. Work has picked up to where I have some extra play money, so I started tearing into my 390 today. As I took it apart ( top end ), I when't slow, and looked everything over real close. The original problem was lots of ticking on pass side, so I pulled a valve cover, and found one of the intake valve tips wore down to the keeper. I had the heads redone back in '95, and everything was replaced except the intakes, which were reground ( shop said they were ok ). Well, 5 out of 8 adj rockers on the intake side have pretty bad wear on the rocker pads, and the tips of the intake's are concave. The rocker assemblys were rebuilts from PSE, B8? on the stands, 8 hole shafts ( yes the holes are facing down ), and bushed rockers w/oversize adjusters. In looking them over, the thru holes for the bolts in the stands are the same size as the bolts, not much room for oil to pass thru. Not at all like what was on the non adj rockers I took off ( stands had a squarish looking hole for bolt to fit thru ). Is this a problem reguarding oiling the rockers? Also, how long/short should the shoulder be on the long bolt that goes into the oiling hole in the head? The one I measured was just short of an inch for the shoulder before it thinned down to the shank and threaded portion. I'm fixing to pull the heads and have the intakes replaced, and the rest checked over, for a 4WD pu would there be any advantage of going to bigger valves? The heads are C1AE's w/stock size valves on a C3AE-E 390 block, Performer man w/600 Holley, Isky 256/262 cam, duals w/ stock man. Anything I need to really look at while tearing into this thing? Thanks for any help/advice you guys may offer, Al |
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