572's with inter cooled 14-71's
#13
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Turn it up until you see the IATs come up. Then back it down. If you're doing it on the Dyno put race gas in it while experimenting.
A lot of the extra power over your old combo will come if you spin it faster.
A lot of the extra power over your old combo will come if you spin it faster.
#14
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#15
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As far as the intercooled, vs not intercooled, I have not seen either setup, elevate the temperatures on long runs vs short runs. In my combination, the intercooler seems to reduce the air intake temps, around 25-35 degrees vs not having it.
A 10-71 right around 1:1 ratio, is making 135-140* intake temps. Believe it or not, the intake temps actually cool down when you open the throttles all the way up, vs cruising. Partly I believe because of the added fuel, and partly because, you are simply passing more fresh air thru the blower/intake/engine. The temp seems to rise AFTER a hard run, and you come off plane and idle, it get a little hotter there.
#16
So I picked up some 14-71's with blowers shop inter coolers. How much boost will I make before detonating a 9.6 static with a 254 264 @50 .632 lift 112ls cam ( basically a crane 691). Not looking to make 1200 hp here, just looking for 800-850 hp. Motors make 650 in there NA state. Leaving compression and quench we're it is after talking with several local builders. Being told I can make some decent power with my current compression and turning the big blowers slow and intercooling. Thoughts???
#17
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What heads are they rob?
#19
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Join Date: May 2010
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They are the edelbrock 118cc heads made for gm's zz572 crate motor. I want to run a thicker cometic head gasket but I keep reading about quench and how I might actually make detonation worse by opening up the quench. I am going to see if Valeko can port the chambers and lose a few cc's while he is installing the inconel valves.