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That's a good point, it is a .030" over 383. I wonder if that has something to do with it, but why in just that one spot?

I'll put that on the list. I dunno. I think that's a little over my head. We think it's something to do with the cam, but not necessarily the camshaft itself. (Does that even make sense?) The springs are box stock that come with 440source heads. Supposedly good to .600" lift.

He's only running singles with dampers, but yes, the springs were checked along with everything that has to do with them.

The rockers definitely aren't hitting the valve cover. As for the Hughes rockers, they're aluminum (un-bushed), on a steel shaft, and as they aren't galled. The only blemish on them is my fault, and that's from when I accidentally tightened the shaft down with a pushrod out of alighnment...

Is the oil path listed for a small block? I'm wondering because of the oil filter location (rear passenger side for sb, front driver side for bb). But in any case, what you're saying is that the oil flow to the lifters have nothing to do with any of the cam or main bearings? As for the...

It's something. We've eliminated everything with the heads, pushrods, and valvetrain. Must be something with the cam, that's the only thing left that we changed. This we did try. Removed all accessories including the fuel pump. Checked all sorts of stuff. It's inside the engine...

It's been a while, but we tried adding a bottle of Lucas oil stabilizer to it to see if that would do anything. This was on top of 20w-50. I don't remember if the tick got quieter, but I do know it was still there and loud. Also, the tick does not get any quieter or louder as the engine...

Got some news, though we still haven't figure it out. We decided to take the head off and take it to a machine shop to see if there was possibly something wrong with it, like a bad valve job or loose valve seat or something like that. Well, it came back with a clean bill of health. Looks like...

This may or may not help you, but I recently replaced a dipstick on my buddy's 383 with Hooker Super Comp headers and the stock type would not work. Where it was supposed to bolt up to the motor mount was blocked by a header tube. I made it work by bending the tube around the header and making...

:thumleft: No problem, thanks for taking the time to reply anyway.

No I did not. The heads that are currently being used are 440source aluminum. I wouldn't have thought to look there, what would the problem be? Could you please elaborate? I wouldn't think so, wouldn't the tick be much faster if this were the case? Same as a torque converter bolt coming...

Yes, that's what I meant, pulled one plug wire at a time with no change in the noise whatsoever.

I don't believe it's bottom end noise, and here's why, though I could still be totally wrong. This engine was not a fresh build. All we did was upgrade the intake, cam, heads, and valvetrain. The engine was in perfect working order before we did the upgrade, but we noticed the tick right away...

Oil pressure hot at idle is ~20. Currently there are non adjustable rockers installed, but even when we were running adjustables we weren't able to eliminate the tick.

No apparent header gasket leak, checked several times. Vacuum gauge does not indicate a burnt valve. Sorry. I forgot to tell you about the combo. 383 stock bottom end. 440 Source Stealth Heads / Currently using stock rockers Comp Cam XE275HL 275/287 525/525 Edelbrock Performer RPM Quick Fuel...

Ok so here's the deal, and this is slightly embarrassing. For 3 years I haven't been able to figure out a tick that a buddy's 383 has been making. Seriously, 3 years, but we've made no progress at all in this time, so be warned this is a long read because this will be a lot of info. What's...

Gotcha. :glasses7: We still need to mess with it so I guess we'll just see how it goes.

Yes, as I advanced the timing I kept lowering the idle to ~850 rpm. I don't remember what it was exactly but it was over 30*. If it can take more initial does that mean it can also take more total? I know this is something we will need to do actual testing at the strip, but do you think 35-40...

Hey got a quick question. I'm helping a buddy of mine with his 383 Cuda and am wondering what a good safe starting point would be timing wise. Specs are: -69 383 -Stock rotating assembly so not sure of compression but guessing less than 9:1. -Quick Fuel 750vs street carb -OOTB 440source heads...

Yes, they are custom length pushrods. When we installed them (the new ones) we marked the valve stems with permenant marker to verify that the roller tips were in the center of the valve. It's not 100% perfect, but VERY close to dead center. However, we didn't mark ALL of the valve stems...

Checked the vacuum. We connected it to a port on the base of the carb and got a steady reading of 5.5 in at idle. We'll pull the valve cover tomorrow and check to see if the rockers are rubbing. Also check the pushrods while we're at it. Thanks for the quick reply. Will keep you posted.

Ok so here's the deal. My buddy and I've been trying to figure this ticking noise out for over a year, on and off as we get frustrated. For the life of us we just can't figure out what it is. We upgraded the top-end and have had this problem since first start-up. The engine specs are as...