21STCENTURYMUSCLECAR

Just Arrived, we will be putting the car back together and reporting the results soon.

Twenty First Century Muscle Cars
ZR1 Heat Exchanger
60-65% more efficient than stock
Direct fit / Easy installation
Suggested for increased boost or power levels on the LS9

Pre-orders / available to ship in 10 days
965. + freight

[IMG][/IMG]

Best Regards,
John Page
972-417-7177
jpage@21stcenturymusclecars.com

red vette nut

Would this benefit a stock ZR1? If so can you PM me when you have the results.
Thanks

Jim Shearer

I would be interested in this answer too.

1991Z07

The short answer to that would be Yes...

Anything that cools the intake charge an additional 65% is going to be good for you. Additionally, it will keep ahead of the heat-soak curve much better than the OEM unit.

yellerz51

Just because this single component in the entire intercooler loop is 65% more efficient than stock does not mean that the intake charge is going to be cooled an additional 65%.

The entire intercooler system would need to be 65% more efficient.

1991Z07

Once again...ANYTHING that cools the intake charge more than OEM is a good thing...whether it's 10% or 65%...it's better for a forced-induction car for sure.

What the benefits are will take some testing to determine...but bottom line it isn't a bad thing!

yellerz51

If the intake air temperature is cooled sufficiently for the stock boost level then using a larger heat exchanger does nothing but block the flow into the radiator.

In other words if the heated fluid entering the heat exchanger leaves close to ambient then increasing the heat exchanger size will not make any difference.

fast00ss

Sufficiently according to who? And for who? The guy that leaves his
ZR1 parked in the garage, or the guy who is going to track it?

GForceSS

Very true. I have never tested the fluid temps, but I doubt it is ambient reaching the blocks. We will see how well the cooling system responds to the exchanger once 21rst completes a few test applications.