Any thoughts on Less Heat & More Power..

So my 08 coupe is pushing mid 500hp with a Forged Ls3 and a A6 Trans. I want More Power and already have a heat issue. Trying to figure out what to do next to get more out of it and try to tame the heat problems. I am running the stock tranny still and have had no problems but I am aware that I will have to do something with that soon.

New 416ci Ls3 Block Forged and Stroked

Callies Crank and H-beam Rods Weisco pistons @ 9.7:1 and a mild cam

T-trim A&A super charger & basic A&A Bosh pump fuel system

Upgraded Torque Converter 2800stall

RPM 3:42 upgraded Gears w/1000hp Axels

American Racing Headers w/ stock NPP Exhaust

Dewitts Radiator with tran's cooler / without extra fans

I was pushing more HP with my old motor but it was not built correctly for the Super Charger so now the motor is right but with less compression and less power. I have about 4000 miles on the build and have had the best tune possible with the heat issue. My AFR’s are just about perfect but I think I could use a better fuel system.

So, Here are my Options as I can see them:

Meth – Would help IAT heat and give me a little boost in Power in cooler weather and help keep my power up in hot weather.

Larger Super Charger –Upgrade (maybe a YSI)????

Fuel system upgrade ??? Might need it for more power and stability???

Dewitts Fans to help with heat issues but I do not think this will be enough and I really have no Ideas to help it more.


Any Idea’s on helping with my Heat issues and then input on best course for More Power???






Mike

 

Start with the meth....Don't see how a larger supercharger would solve your heat problem.

 

What exactly is your heat issue?

 

Heat is pulling lots of timing and if it is hot weather out my engine temp will rage to 250+ with the AC on.... turn off AC and they drop back down

 

Is your trans cooler going through the Dewitt's or is it standalone?

Do you have a standalone oil cooler? Using the Dewitt's to cool the oil?

 

Will not solve heat issue but I want more HP out of it somehow.

 

At this point the Dewitts is doing all of my cooling.

 

Im trying to figure out why a LS3 which is stroked and poked is only making mid 500's? My stock LS2 A6 equipped car makes 522rwhp with only longtubes and a T-trim. Stock pulley and very safe tune.
I see you have less compression with this engine, what is the compression ratio?

 

Besides the intercooler, are there other changes that would effect airflow such as a splitter, raising or lowering the car, etc?

I would run a standalone tranny cooler if you have room. Even if you were seeing just 200* coolant, that's not allowing for a lot of cooling of the tranny. That would be an additional place to displace some of the heat load.

 

9.7:1

 

Sounds like everyone trying to cure the heat and not helping on

MORE POWER (said like Tim Allen)

BOOST MORE,

Meth YEAH MORE

Stand Alone Trans cooler

Bigger stand alone OIL Cooler, help get heat out of Radiator? more air through Rad, cool ducts? fans etc

Change Pulleys?

more air in more air out, free flow exhaust? may see if Borlas flow better than NPP,

just my .02 worth

 

It is running a complete Zo6 wide body kit and sometimes I switch back and forth to a Zr1 splitter..... It is slightly lower than stock but not much.

I will give the Tranny cooler a try this summer.

 

You say your A/F ratio is perfect but what is it?

What are you stock fans set to come on at? What per cent at what temp °?

What is the ignition advance set to at WOT? The fact it is pulling timing does not mean much by itself. You want the OPTIMAL ignition advance for a given RPM and load. More advance does not necessarily make more power.

Do you have the tune and scan? If so, I would like to look at it.

Have you contacted Corvette Forum member TJ Wong? He is up in your area.

 

Mez --- PM Sent

 

I would say you need to solve the heat problem then the more HP issue.

Like above said check when the fans are set to turn on and get separate external coolers for the trans and oil. If that doesn't help get a bigger radiator and or some more CFM fans for the radiator.

 

why do you need 342 gears, the extra rpm is a heat source, try a separate independent trans cooler with its own fan. and the temp will always go up with the ac on, put the windows down and the defroster on set to 90, and get a cartek fan module, it will turn the fan on 100% at 181 and stay on until the temp drops to 170

 

You can set the fans % at a lower coolant temp in the tune. The tuner should have done this especially with a FI car.

Its not recommended to run them at 100% all the time because that can burn them out. I have mine set at 40% and my temp stays at ~180°F with a 160°F thermostat. But I don't have a S/C.

 

NEED??? 342 gears.. No but I would rather get rid of the S/C than my 342 gears I love them. RPM change is 4-500 rpm at 70mph. I already have my fans on sooner and longer but I will look into the cartek Fan Module also. If I wanted to run with the windows down and no AC I would drive my 69 Camaro or my 66 Chevelle convert....... I like the comfort, Fat boy's sweat like pigs in 90deg weather with the heater on.

 

the a6 trans with 256 gears is like an a4 with 373, you don't need them a bigger converter would be better, plus super chargers really don't need gears that low, it is the biggest part of your heat source, that higher rpm on longer drives cant help, in my opinion which don't mean crap you have been in the ac to much, you will get use to it

 

Even if I dont get used to it........ Sweating off a few pounds could not be a bad thing.