Does anyone have CFM flow rates for 62/24 turbo's or anyother for that matter, need to get a intercooler for my '88 GMC and would like to keep the stock radiator in the truck so my dodge intercooler won't fit. so i'm on the prowel for an aftermarket cooler and want to get one that wont restrict my airflow...
thanks for any input

 

Intercooler CFM ratings are really only good for relative comparisons on FI motors. The problem is that no matter what boost is, volume flow through the motor and therefore IC is still dependent on displacement, Volumetric Efficiency, and RPM. Obviously mass flow rate will vary with boost. So regardless of turbo, the volume flow rate won't change, but the density of the air in that space will change, and how well a core flows at various densities is not spec'd. All you can assume is that a core that flows a higher CFM at some set of variables than another measured the same way should do better with higher output turbos and their higher mass flow rates/charge densities.

CFM flow rates for turbos are given at some standard temperature and pressure values, which lines up better with what you would epxect to see at the compressor inlet. Mass flow rates for turbos are a much better indication of their size, since you can determine a lot more from the mass flow rate without having to do the conversions from volume flow rates.

At any rate, neither number helps much in selecting a good intercooler core, unfortunately. Too much magic and not enough info in the core specs, IMO.

Since I haven't really answered your question... Assuming a displacement of 5.9 liters, VE of 100%, and RPM of 3000, you're looking at a max CFM of 312, regardless of turbo or boost. Naturally though you don't want a core rated that low.

 

so say someont takes a cooler out of a class 8 truck "freightliner" an squeezes it into his 1st gen intercooler foot and a half tall 2ft wide what else whould he need??? what would happen theoretically of course.

 

I came about as close to that idea as one can w/out having the IC drag on the ground or act as a bug guard over the hood It works gooooood

 

cool what would the side effects be "turbo lag, rough idle, low high end power????"

 

None of the above.

 

cool i finally got it it will just fit btwn. my head lights it actually closer to 3 1/2 feet wide and tall enough to be hanging below my grill when its just below my hood. im gunna have alot of fab. work in my shop in the next couple of months, o by the way it was a freebie it had a pin hole in it and wasn't warranty so instead of throwing it out the boss said why don't ya bubble wrapped it and take it home "cool boss" so i did. now i gotta chop up the front of my truck good thing i got two low pro elec. fans already installed.

What turbo ya recommend " currently non IC

 

How big is the IC? Mine's from an '06 Dodge/CTD and I had to cut the front of the frame off to make it fit...You can upgrade your current turbo for a few hundred bucks and it will match your stock injectors nicely.

 

heres a pic of the future monster overkill cooler 42 1/2 x 26 inchs
Attachment 14431

 

I cannot imagine how in the heck you would ever get that thing stuffed in there.

 

Where did you get the fan from? What kind of CFM will it flow? I'd like to do the same.

 

got the fans from a local race shop but are online there FLEX-A-LITE fans not the best but do the job don't know the cfm rating but they have two stages all on a temp. switch recommend putting the sensor in the upper hose for beter heat transfer.to fit the cooler i will have to do alot of fab work will document it won't be for a while.

 

Thanks that was a lot of info thus making my decision of a cooler that will flow 1000 CFM or better sutable for the truck now just need to watch for pressure limits on coolers Thanks again that really enlightened me
James