Description:
If you plan to run boost with gasoline, you need to be thinking about lowering your inlet air temps. That means intercooling. The two generic types are air-to-air and air-to-water. Both can work. Air-to-water types are generally more self-contained and therefore require less fabrication work. Available underhood space and vertical clearance are factors that may favor one type over the other. Air-to-water systems enable the running of refrigerated or iced coolant for enhanced cooling. Air-to-water systems are built into Whipple superchargers and we have used a lot of 417 Motorsports and Tik Performance intercoolers sandwiched inside Holley intakes (see videos down below).
FAST was teasing this LSXHR air-to-water intake manifold/intercooler combo at PRI 2023. They claimed it was more efficient at heat transfer than other competitive products. Their testing on a 1,350hp/20psi turbocharged LSX engine showed a 198-degree/F drop in temperature and less than 1psi loss across the intercooler. The package is rated to hold 35 psi.
We have used a lot of their LSXHR intake manifolds with great success. Being a polymer intake, it is lightweight and not subject to heat soak. Our GM (Tim Zapp in photos) was hounding FAST for most of 2024 and one finally arrived in September. One important item to note is that this combination requires special short stacks. The standard ones will not fit. FAST said that it would also work with no stacks.
We ran the new intercooler / LSXHR intake manifold in the D1-X ProCharged, 370ci LS using the short stacks. It did a great job holding inlet air temps low (see dyno sheet). In fact, it had the best heat removal capacity of any intercooler of its type that we have run. The trade-off is vertical clearance.
The intercooler can be ordered as a stand-alone or as a complete combination with the short stacks and fuel rails included.
Call us at 815-725-2727 if you'd like one or have any questions.
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