Quote:
Originally Posted by Formulajones
That 60919 cam in a 455 is actually not bad at all. It's out on a 113 LSA if I remember correctly, and even with stock (non bleed) lifters it still idles well enough and makes vacuum, if compression is somewhat decent.
Here is a custom 239/243 done with Voodoo lobes that Paul Carter spec'd, it's a hydraulic roller with over .600 lift but the idea is similar. He ground this on a 112 and I installed it at 106.25 ICL per his recommendations. This car has AC and 3.42's, and is making 12 inches vacuum up at 5000 feet elevation. It's 9.98:1 compression with iron heads and runs great on 91 pump gas.
The voodoo lobes seem to idle a little more tame than other cams I've used with similar duration and LSA. As you can hear, once it's warm and settles into a nice idle, it's only a noticeable lope. Nothing radical at all. I have other videos driving it around, it drives like a stock firebird, works the power brakes just fine, and just sits here and idles at 800 rpm easily. Kick the idle up a pinch more and it's even smoother. Using a Voodoo 704 with just 233 @ .050, 6 degrees less than this cam, even on a 110 I would suspect shouldn't idle any more choppy than this cam once tuned and dialed in properly.
https://youtu.be/AOqwz3QlO5k |
Thank You sir, beautiful car, and sounds really good... With this car being a 4-speed manual transmission, I'm thinking it won't be quite as fussy as an automatic either. We would like it to make around 13" of vacuum atleast, we are at 1100ft elevation.... I wonder how much vacuum the Voodoo 704 on a 110 seperation would make in a 9.7-1 compression 467 at 800 RPM idle?