Which means either the low-end torque isn't that bad, or it's truly gutless everywhere. The power delivery is smooth all the way through, it's not laggy and then comes on strong with the cam. It has far more low end grunt than the Nissan Hardbody I had before. The low end seems fine, but I never drove that engine before I built it. Yeah, the second video was a different camera and doesn't sound as rumbley (but certainly choppy). Fire it up to go home, and I'm at peace again. I call it "Potato Therapy." Just a minute of idling in the parking lot at work, and I'm ready for my day.
I currently use Shell Rotella Diesel oil and a ZDDP additive. The cam survived break-in, and hasn't lost a lobe yet in over three years of daily-driving. I'm getting 10mpg, which isn't at all bad, considering what it is. The idle air passages have been hogged out significantly to try and keep the throttle plates closed enough. The Rochester has been heavily doctored via Cliff Ruggles book, and I'm running a 5inHg power piston spring. It has enough vacuum to "adequately" run power brakes. I am running 10.9:1 compression, 2500 stall converter, and 3.73 gears with a TH350. Mine is a 285 advertised duration, 470/470 108LCA 104ICL Ye Olde "Z/28 springs" would probably have worked fine. With that Powerglide you may have trouble getting any of them to idle in gear.I am running a Howard's 110961-08 it would be the next size up from yours.Īlso Howard's #98212 valve springs with offset keepers and valve rotators deleted. At our big car show last year they each sounded pretty good so I asked what cam they used. The best sounding small block Chevy powered cars in our area have: an Edelbrock Performer RPM cam, a Mother thumper and a Crower roller cam.
The only evidence that you swapped cams will be the gasket debris in your trash can and a half tube of silicone gasket maker on the workbench. It will drive fine and improve your performance a little but it will have no personality. If you call a cam company help line they will point you to a very practical cam for your application. Some were built to run, some were built for the sound and fury but that combination isn't very workable today, mostly due to the crappy gas. In the good old days guys would load up their engines with a Sig Erson 990B or Isky 550 Super leggera or some other monster cam and 12.5 to 1 compression and thump their way through the local hot spot. And it's got to go from A to B with some reliability. Ed, I get what you are trying to do give your car some "presence" with a good looking and mean sounding engine, maximum performance isn't really a consideration.
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