Gorsuch 6 blade MaxAir fan?

[CCHIEF]

Interesting results, not surprising at 17". A factor is no load on engine, power enrichment circuit of carb very likely not fattening up the mixture without any load on it. Aluminum, cast iron, or mix of engine components? Were you running a serp or HTD belt? The only fan that I know of in 17" that is any seriousl competition for the Gorsuch is the Race Fan (and the Jones hubed copy).

[over4T]

All iron 385, standard belts; not serpentine, flat tappet mechanical cam as some places don't allow rollers. I've built a ton of these and have a pretty good idea of what combinations work the best. One difficulty we had was finding a cam that worked well with the carbs we are forced to run at some tracks, anything from gage legal 500 2 barrels to open 4 barrels.
As some tracks allow alky and others don't that could be a problem too so we just stick with the 110-112 gas. Head sizes took a couple of seasons to sort out too with the different carb combos.
Certainly, no load conditions are very different from our usual July/August weather with several nights over 100 degrees (but it's a dry heat) and that's our main focus to try and stay at a reasonable temp during that (usually) busy time of the season.
Our Tri State Pro Stock Challenge tour is something we'd planned on being our major effort this year but it's looking more likely to be a Bi State deal with California and Nevada sort of in and Oregon's prospects of opening up looking dimmer each day. But we go about anywhere they'll have us and regularly run top 3 most of the time with a few scattered wins. Don't seriously chase points, just well paying shows at interesting and/or new tracks.

[7uptruckracer]

So say I for example run an Allstar 6 blade 15” (15 is all that will fit in this car). I need to keep the same size. Not sure the Allstar is cutting it. Should I go with a Race Fan 6 blade 4 blade or what? What would cool my modified better? HP loss isn’t an issue we have way to much anyways lol

[dirtdobberrr]

I have always preferred building a really nice shroud first, second, I like to add a small piece of aluminum sheet to the very bottom of the radiator, this piece needs to be long enough to hang down below the nose piece at least one and a half inches. Third and last solution would be to switch to a fan that moves more air. All this assumes that you are already running one to one pulleys and a four blade GM fan or a copy of this fan. This has always worked for us. I have solved overheating problems on other peoples cars just by removing a very restrictive but attractive water neck restrictor plate...either in anodized blue, or anodized red. Stewart Components says that a water neck restrictor plate is seldom necessary, but I have found that many people buy into the fact that one can move water through a block and radiator too quickly for said water to cool....I do not believe this, and neither does Stewart Components.

[cjsracing]

ran it last night on an IMCA spec engine and I am very happy I bought it. 190 during the race and down to 160 by the time o parked at my trailer.Glad I bought a 2nd one to put in the open motor car.