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10-17-2005 08:47 AM #1
why does my 454 sound like a diesel?
I'm rebuilding a 71 Camaro SS with a 454 that came out of a 74 Chevy titan morothome. As long as I've had the car (6 months), it makes an annoying diesel-like rattling sound at lower-revs while I'm accellerating in first and second gears. I've messed with ignition timing and determined that it's not detonation (it only makes the sound in low gears). I thought it might be an exhaust leak of some kind but installing headers and new pipes didn't fix it. I didn't change the mufflers yet but the sound doesn't seem to be coming from that far back.
Could this be a clutch/tranny problem? It has a Saginaw 4-speed and, according to the prior owner, it has an OE clutch. I'm wondering if there's a problem with the throwout bearing rattling or something out of adjustment with the clutch disk or pressure plate.
The last couple of weeks have been spent waiting on parts and getting the engine ready to put in the car. I found a manifold (turned out the guy I bought the center sump oil pan from had one). It’s...
1968 Plymouth Valiant 1st Gen HEMI