351W lifter clatter issue

[Topless69GT 28]

I finished my car this spring (well you are never really finished) and I have been working bugs out of the car and I am nearly there. The only issue I have left to tackle is the lifter noise on my 351W. The engine was totally rebuilt and I thought the noise (clattering) was timing related but it is not. I get it when ever I push on the gas. The car seems to run fine but I am growing tired of the noise. It is not a major amount of lifter noise but enough to irritate me. I have had many 289, 302 and 351's and never had one with lifter noise after rebuild.

[det0326 179]

That is weird usually lifter noise is more noticeable at idle. Are you getting any noise at idle? Oil pressure good? Have you put a higher lift cam and possibly a rocker hitting valve cover? Does it seem like just one lifter or several?

 

Dave

[Wycked69 20]

What's your CR and what octane fuel are you running?

[Rsmach1 71]

Yea I'm with Wycked69, sounds like detonation, what's the static compression ratio, what's your timing set at (initial, total, when does total come in, and how much vacuum advance). Did you calculate your DCR? (Dynamic compression ratio) What cam are you using? Most importantly, DON'T DRIVE THE CAR, if this is detonation, you will destroy your engine in no time.

 

Edit, if you list the details of your engine it will greatly help.

[Wycked69 20]

I have absolutely no idea where that thumbnail photo in my prior post above came from

[det0326 179]

I have absolutely no idea where that thumbnail photo in my prior post above came from

I don't either but I like this one more

[Rsmach1 71]

LOL me too

[Wycked69 20]

Dang, I have no idea where that one came from either

[barnett468 418]

.

if it is in fact the lifters and asjusting them to the notmal amount doesnt help, try asjusting them to only 1/3rd turn in from 0 lash . . if they still tick, just buy new ones as long as they aren ot made by comp cams . . if they arew non roller hydraulics, i would buy cranes, if threy are rollers, i would buy morel p/n 5323.

[1969_Mach1 333]

Detonation or a small exhaust leak at only one exhaust port?  I have also had this noise come from a slightly loose spark plug and from a poor fitting spark plug wire on a spark plug.  Lastly, I have had a small lifter sounding noise on acceleration only coming up through the intake manifold.  That one was strange and I thought I had a major problem, but it stopped after richening the air fuel mixture.

[69RavenConv 288]

Dang, I have no idea where that one came from either

 

I deleted the first one but left the second one :)

[Rsmach1 71]

I deleted the first one but left the second one :)

Thanks, gives me something to look at while we wait for the OP to respond :)

[Topless69GT 28]

I took the car to a friend of mine that is a mechanic and he adjusted the timing and adjusted the carb and it went away. Power is much better now also.

[Rsmach1 71]

Glad you got it worked out.