That is simple, of course it takes more throttle to get to 1500 rpm's loaded than unloaded. But it's not just louder, it's different. It's that lugging sound that we all recognize. Guess that's it though if nothing else is changing. No fancy discussions on harmonics, or exhaust velocities, etc...just bigger explosions.
Allen
Yeah, well, that's just like, you know , your opinion, man - The Dude
1948 Chevy 3600 - goal Original restoration, Current Stage 1 - Disassembly and getting body in primer
1954 GMC 3100 goal Hot Rod, Current Stage 1 - Get body in primer
1931 Ford Model A 5 window Coupe - Old Skool Hot Rod
1945 Ford 2N Tractor - Runs great
1964 Ford 2000 Tractor - Use it every week
1974 Stingray Corvette
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