pump gas forged studded motor
10 lb boost
twin intercoolers
no water or meth
how high intake air temp before it's too hot?
sensor is right before MAF right before intake elbow
thanks -

 

Here is an excellent article from GM High-Tech magazine that has the above graph.
http://www.gmhightechperformance.com...l/viewall.html Bob

 

blower discharge temps are lower with the 3.5s from 4000 and up ???

 

It looks like they have them backwards, as the 4.5's are more efficient. Bob

 

Tuner told me they set mine up to start pulling timming @ 120 degrees F. Its worked great for me this summer with no KR using walmart 93 octane gas and 15 deg timming @ WOT In 105 deg heat . Im seeing 7-7.5 lbs @ 6000 RPM where my shifts happen. This is on a stock longblock with 183k on it driven 110 miles a day 4 days a week.

 

I agree with Bob - probably backwards on the graph. Thanks for posting the article.
Still - at what point in the piping was this temp measured? And the intake temp? it does not clarify - unless I missed it.
Reason I ask is my IAT readings after the intercoolers just before MAF senser climb from ~ 101 degrees under boost to ~ 160 degrees at 6000 rpm under 10 lb boost. Then cool right back down.
I have no idea what my intake plenum / runner temps are (LT1) and my laser temp reader will just read the water / ambient temp.

Fellow dataloggers - what IAT temps are you seeing and what timing are you running during those temps?
At what temp do you just plain need meth or something on 93 pump jizz?

 

For the testing, Procharger sent us an airbox and Y-pipe with bungs and sensors for detecting pressure and ambient temperature. This would allow the first measurement just after the blower and then a second after the intercoolers and the majority of the tubing.

Since you have an LT1 you have the smaller 3.5" twin intercoolers. Methanol injection normally drops the inlet air temps 35 to 40 degrees as soon as it starts to flow, which would really increase your hp. Bob

 

You guys are looking at the chart incorrectly. The dark blue represents the 4.5" intercooler. Blower discharge temp is before the intercoolers and manifold temp is after the intercoolers. As you can see not only was the discharge temp slightly higher but the manifolds temps were cooler.