Hello,
Looking for some opinions on a noise that 496 BB is making. It has never been a mechanically quiet engine. However, this noise is currently not present on a cold engine at any rpm. At least to my ear. However, once the engine is hot it is audible. No power loss is present.
Not very noticable at idle. Most noticeable at a constant engine speed of 2,000-3,000 rpm. Also on deceleration of engine rpms.
The noise is present in Park or in Gear, no real change to the noise.
Noticed this after a weekend at the drag strip making quite a few passes. Engine oil level is correct. Pressure is 30-40 psi at idle depending on temperature. Oil pressure raises quickly with rpms.
Recently changed to Joe Gibbs Driven 10w40 oil about 1 month ago from Lucas Hot Rod oil 20W50.
I have not drained the engine oil for inspection just yet.
No change to the concern removing one spark plug wire at time.
496BB
Hydraulic Flat tappet .540 lift Dur @ .050 251 Int & 263 Exh
Eagle Crank and Eagle H-Beam rods
Indy SR Aluminum Heads
Timing is set at 34*
727 3800 Turbo ACtion coverter, B&M flexplate
https://www.youtube.com/watch?v=DrtTynp6pHwhttps://www.youtube.com/watch?v=zrRS5MOOk48https://www.youtube.com/watch?v=xDldGUt3lbAPlease see video descriptions
Thanks!
