heat issues
Instructor
Joined: Nov 2017
Posts: 135
Likes: 42
From: Gonzales LA
I did and he was leading me to try and use the shortened one because he was not sure it would fit. At first I told him to go with shortened but I just called him back to go with the full size since it worked for you.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
I never had full size prospeed fans, I had full size fans, on my full size dewitts, but not the prospeeds. It was a different dual spal setup, but it clamped over the top the same way. Just don't want to steer you wrong.
Melting Slicks
Joined: Jul 2014
Posts: 2,134
Likes: 204
Do your research before ordering Prospeed fans. Many have fitment issues especially with the full size. Brackets not lining up etc. I was set to order them myself but for a product that costs top dollar I don’t feel that’s acceptable. Stock fan is doing well with full size DeWitts.
Drifting
Joined: Dec 2003
Posts: 1,755
Likes: 88
From: Pearland Texas
Well, I've run dual spals and a whole host of other mixed matched stuff. Prospeed stuff has worked really well in the three cars I've put them in but have had a few issues with some of the wires being crossed but other than that nothing else. But like you said that's just my experience with them. My car runs the coolest of any others that I've compared too, but I worked hard on airflow and the angles of all the IC, Condenser, and Radiator all being almost exactly the same angle. A good spacing between IC and the Condenser/radiator was a huge key for my car. I run a Dewitts radiator, and the dual spals not sure which ones as they were on the car when purchased so I just kept them. I run the Lingenfelter oil cooler block and a B&M super cooler with the fan for my oil. Stock water pump 160* TSTAT. I have parallel cooling head gaskets and a #8 off of each rear of the head to the radiator. Here in Houston, it runs 175-185 in the dead heat with A/C on. And with Iron blocks and my LSX iron block, they have always ran about 15-20 degrees hotter than my AL blocks did. so, before the head gasket change and #8 lines, I was constantly running 190-200* same conditions A/C on etc... So Good luck. Just wanted to give you an idea of what worked for me.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Well, I've run dual spals and a whole host of other mixed matched stuff. Prospeed stuff has worked really well in the three cars I've put them in but have had a few issues with some of the wires being crossed but other than that nothing else. But like you said that's just my experience with them. My car runs the coolest of any others that I've compared too, but I worked hard on airflow and the angles of all the IC, Condenser, and Radiator all being almost exactly the same angle. A good spacing between IC and the Condenser/radiator was a huge key for my car. I run a Dewitts radiator, and the dual spals not sure which ones as they were on the car when purchased so I just kept them. I run the Lingenfelter oil cooler block and a B&M super cooler with the fan for my oil. Stock water pump 160* TSTAT. I have parallel cooling head gaskets and a #8 off of each rear of the head to the radiator. Here in Houston, it runs 175-185 in the dead heat with A/C on. And with Iron blocks and my LSX iron block, they have always ran about 15-20 degrees hotter than my AL blocks did. so, before the head gasket change and #8 lines, I was constantly running 190-200* same conditions A/C on etc... So Good luck. Just wanted to give you an idea of what worked for me.
Drifting
Joined: May 2015
Posts: 1,525
Likes: 391
From: Martinez CA
I ran a full size Dewitts with integral engine oil cooler. The was on a Heartbeat blown manual trans Grand Sport. So same supercharger H/E that you're using. I got rid of the stock air/oil engine oil heat exchanger in favor of the built-in unit that the Dewitts uses. My reason for doing that was to get rid of another heat source around the radiator. Side benefit was that the engine oil got to operating temp quicker.
I used a 160* t'stat and more aggressive fan settings. Stock fan. The fan would turn on quicker and ramp up to the fastest fan speed quicker. In anything but hot weather, I thought the engine ran too cool. It could also idle for long stretches sitting still in 95* heat without even thinking of overheating. I don't think I ever saw it over 205 or 210. Normal cruise temp was around 180 in hot weather and 170 in cooler weather.
I used a 160* t'stat and more aggressive fan settings. Stock fan. The fan would turn on quicker and ramp up to the fastest fan speed quicker. In anything but hot weather, I thought the engine ran too cool. It could also idle for long stretches sitting still in 95* heat without even thinking of overheating. I don't think I ever saw it over 205 or 210. Normal cruise temp was around 180 in hot weather and 170 in cooler weather.
I have a full size DeWitts, and and Pro-Speed dual fans. I had hoped it would cool better at idle than it actually does.
When I hit 221*F as mentioned above, I parked the car and let traffic decrease. It was still climbing. I didn't want it to go any higher, cuz I'm **** about high temps in anything...but especially coolant and oil.
.
Last edited by Chiselchst; May 16, 2022 at 10:08 PM.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
I'm using the exact set up. The highest temperature in mine was 221*F. That was in >100*F, in Napa CA. Mine cools back down to as low as 160*F if cruising on the freeway...
I have a full size DeWitts, and and Pro-Speed dual fans. I had hoped it would cool better at idle than it actually does.
When I hit 221*F as mentioned above, I parked the car and let traffic decrease. It was still climbing. I didn't want it to go any higher, cuz I'm **** about high temps in anything...but especially coolant and oil.
.
I have a full size DeWitts, and and Pro-Speed dual fans. I had hoped it would cool better at idle than it actually does.
When I hit 221*F as mentioned above, I parked the car and let traffic decrease. It was still climbing. I didn't want it to go any higher, cuz I'm **** about high temps in anything...but especially coolant and oil.
.
Instructor
Joined: May 2014
Posts: 117
Likes: 7
From: GreatFalls Mt
Full size prospeed fans do not work with an ecs kit. Well at least they did not fit in my application. The shortened version are the exact same fans just mounted side by side. It still mount perfect to a full size dewitts radiator.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski