Buick 455 Goro Needed

I will be pulling my 455 in 72 GS 455 this winter and before I do I would like to have a Buick engine builder listen to this 455. It has a rattling marbles sound when warned up. Oil pressure is great, runs great, and the noise has to go. It's been there for years and think it is because of excessive bearing clearances but the oil pressure is still excellent. I have a .010/.010 crank I plan on installing because I hear a low end noise once in a wile on cold start up, AL.

 

Piston Slap?

 

The sound seems to be in the lower part and sound Random and not repetitive. AL.

 

Ah. I was just throwing it out there. If you can produce a high quality recording and post it on the board that would be really helpful to the experts on here.

 

Thanks for your follow up! I'll look into that. Trying to find a Buick builder in Nortern MD. is tuff! I'm a mechanic my self and never heard this sound in a 455, AL.

 

sounds like a cracked flexplate to me,usually a jar of marbles type of sound from that,look at that real close before tearing down your engine,also remove belt and see if the thrust bearing is bad,this may also take out the flexplate.
ken

 

Wait a minute. Isn't the infamous Mr Tom Tolesco out your way?

He is a nailhead guru but I'm sure he can help you. Screename Telriv.

 

Ken, this is a 4-speed car, AL.

 

I'm no expert but i heard someone complained of a similar sound and it was a broken stock windage tray rattling in the oilpan.
Jamie

 

Jamie, was the noise all the time or after warm up? AL.

 

Just off my memory it seemed to be most of the time but i have a bad memory and i read it on here some time ago.
Jamie

 

Al, I think it is the windage tray, I've had 2 go in the racecar, discovered when the oil dipstick hits the windage tray, when you try to put it back in. Check it out! :spank:

 

Hi Al - Check with Bruce (BQUICK) or Mike (carcrazy455). I think they both use BURTONSVILLE PERFORMANCE MACHINE SHOP,Laurel MD.(301)490-3131 Ask for Mr.Chuck Roberts.(Mr.Roberts).

- Bill

 

Go to the Cecil County meet in october (the 16th & 17th this year). LOTS of Buick gurus there (hopefully including me, although I fall far short of the "guru" status). It is in North East Maryland.

Might be an oil slinger that's loose...

-Bob C.

 

My Buick friends, thanks for all the follow up! If any 455 builders catch this post and going to Cecil plese chime in :beer , AL.

 

Re: Buick 455 Guru Needed

Still chasing this demon huh Al? I hope to see you at Cecil this year. It's been too long.

 

Re: Buick 455 Guru Needed

Paul, way to long! If Roberta is correct I will be buying her dinner at the next Nationals. I plan to attent the Cecil event. Hope you and yours are doing well! AL.

 

I Believe There Is A Way To Determine Rod Or Main Bearing Failure, If It Makes The Noise With No Load It's A Rod, If It Does It Under Load It's A Main. You Can Also Get A Mechanics Stethiscope And Try To Pin Point The Noise. Good Luck

 

No, nothing on load, just at mainly heard at idle, AL.

 

sounds like spun rod bearings, I had 4.3 that sounded like a bag of marbles..