wierd engine sounds.

[chicogixr]

im getting wierd engine sounds coming from what sounds like the pass. side. it sounds like detonation but its louder and it doesnt happen all the time. it happens when its its accelerating any faster than your grandma does, but when the engine is been running for like 15 minutes it doesnt do it- only a little sometimes. performance is the same so i dont think its a connecting rod. maybe one of my rockers is a little loose? i think it might be the torque converter or flywheel but i dont see any rub marks. since it stops after a while maybe something with the transmission?how fast to atf heat up? ill try to pull the valve cover tomorrow but for now i dont know. its a newer engine maybe 10-15k 350. in a 79 k10 and a t350.

[MylilBowTie]

Exhaust manifold gasket or header gasket?
Or is it more of a metal sound than a ticking noise?
Does it only make the sound when it has a load against it or all the time?
Is there anyway you can record the sound and upload it to the Internet?

5 minutes driving around is good enough to get the fluid hot enough to read. Engine has to be run to get a proper reading on the transmission dipstick.

[PHOENIX]

Does your truck have the AIR (smog) system?
If so the tubes are screwed into the manifolds and can come loose causing an exhaust leak.

[chicogixr]

.
i dont have any smog equipment. there isnt any exhaust leaks. it is a rattling or banging type sound like detonation . it does it if i accelerate in reverse too. it only happens when there is acceleration. but i can accelerate very slowly and it wont happen.

sorry no sounds.

[chicogixr]

also it doesnt happen when its in park or neutral and i rev it fast.