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**MikeB** · 06-21-2021, 12:09 PM

Switching from a 195° t-stat (if that's what you have) to a 180 or 160 won't fix anything unless the 195 isn't fully opening.

Might want to try a high-flow t-stat from Flow Kooler or Robertshaw. I have zero experience with electric fans, which fortunately I've never needed, even in North Texas. But if the OP is seeing 200° on the highway when ambient is 95-100°, that tells me the problem is not just the fans. I have to wonder about the re-core job.

I credit never needing electric fans to my use of aluminum radiators in my previous two project vehicles. One was a used Griffin in a 55 Chevy car with 350 and A/C, the other was an inexpensive single core in an 82 C10 with a 350 but w/o A/C. Some folks love to hate on both of those, but they worked great for me for several years before I sold the vehicles. Both had clutch fans and shrouds.

Good luck resolving the problem, and keep us updated.

06-21-2021, 12:09 PM	#8
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,430	Re: Engine temps with Vintage Air Installed Switching from a 195° t-stat (if that's what you have) to a 180 or 160 won't fix anything unless the 195 isn't fully opening. Might want to try a high-flow t-stat from Flow Kooler or Robertshaw. I have zero experience with electric fans, which fortunately I've never needed, even in North Texas. But if the OP is seeing 200° on the highway when ambient is 95-100°, that tells me the problem is not just the fans. I have to wonder about the re-core job. I credit never needing electric fans to my use of aluminum radiators in my previous two project vehicles. One was a used Griffin in a 55 Chevy car with 350 and A/C, the other was an inexpensive single core in an 82 C10 with a 350 but w/o A/C. Some folks love to hate on both of those, but they worked great for me for several years before I sold the vehicles. Both had clutch fans and shrouds. Good luck resolving the problem, and keep us updated. __________________ Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!