Thread: 350 solid lifter lash?
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09-19-2003 07:02 AM #1
350 solid lifter lash?
I have an 84 c-20 truck with a way overbuilt 350 engine in it. I didn't do it, I am just trying to make it run better for a while till I finnish building another 350 the right way for a truck. It has a solid lifter cam in it and I have no idea who made it or how big it is but it has a terrible idle. Worse than my old drag car. Huge cam. Right now I got it running pretty good for what it is but when it heats up it gets pretty sluggish. I strongly suspect the valve lash since it is only 6-8 thou hot. The only solid lifter engines I have ever worked on , aside from deisels are usualy a lot more like 12 to 22 or so. I was thinking about taking this one out to .020 hot. Anyone see a problem with that much for a solid cam street engine? Or have a better suggestion?
Previous owner spent all this money on it and left stock manifolds, worn out qjet and a very worn out hei on it. I already replaced all of that. No wonder he traded it off so cheap. Moron! Plus it is a 3/4 ton chevy truck. Sometimes I would love to see into a persons brain like that and see what is going on. Probably not much.
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09-19-2003 07:22 AM #2
Boy that was a quick response. Thanks. You don't think that would get too noisy? I doubt it would. Good point you have though about less lift. I will do that tonight. My 4x4 has some major valve seal problems that I am putting off till next weekend and I have to fix the chevy tonight so I can go hunting tomorrow. You know how embarrasing it is getting passed by little rice burners on an onramp with a motor like that? I pass them once it winds up no problem but it's still embarrasing. I got this chevy to pull my horse trailer but that ain't gonna happen till I finish my motor. It's a 350 4 bolt from an 82 .030 over and I am doing the three angle job with manly valves and have decided on a comp cams extreme 4x4 cam 264 I think was the duration. My pistons are probably gonna be flat tops but not sure yet. My frinds is trying to talk me into 305 heads for a tad more compression but is that really true? more compression? I have a set of them in the garage read to go. I already plan on having to use mid grade gas. I can't afford another super unleaded motor around here. Any Ideas for valve train for a hipo truck engine? roller vs stock and spring type.
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09-21-2003 06:11 PM #3
Sounds like too much cam for the street anyway, but what heads are on it??What intake did you choose??Carb?? Manual or auto?? I f it is too much cam, you may be better off spending the $120 and getting a hydraulic anyway. Get the springs from the cam supplier.
BTW, our "A fuel" car ran a 396 with solid lift. .026" intake, .030" exhaust 9000+ rpm.Ensure that the path of least resistance is not you...
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