Anyone make an? Is it something you just gotta find? I'm using a mix of 231 and 350 front drive stuff and I think the different ratio pulleys are clashing with each other. At idle the car will creep up to 210ish... But if I hold it at 1100rpm give or take, it will come back down to 195.
https://marchperformance.com/buick/buick-3-8l/pulleys.html 210 isn’t really bad. But you may need more air flow/fan clutch issue or radiator is got some plugged cores/ too small. How well does fan fit in shroud, should be about half in /half out.
I have never been over 190 even after driving 40 miles at 3000 rpm. You need a good shroud on there and a clutch ran with a good clutch and a good and clean radiator. My new Modine radiator has been in there 25 years now and I still cannot get that temp over 190. maybe if I drive the living piss out of it in a road race, maybe then it will climb up. Fan shroud very important must be like Alex says 1/2 in 1/2 out, If you put a front dam under the radiator like newer cars that will help pull the air into the radiator. I had air in my car so I used a radiator that was for a air cond car. 210 is too high I don't care what anyone says at that point you are on the verge of getting even hotter yet. Think about it that is 30 more * than what I am running(180-85 90% of time). You know how thin the oil gets at that temp. I would run synthetic if you are ok with that high temp. and don't crutch the oil with 20-50 10-30 is it. If someone here says you will have more HP that is bull too, but technically that is supposed to be true, but when I was at the track if I started the car up at 150* the car would run it's best times and be consistent, When it runs on the hot side it runs slower. I have been to the track a bunch of times. 190 is about as high as I would let it go, put in a 180 stat that is what I run. If you want to run in the ice cold in the winter yeah you need the 195 stat for that, I used to drive this car in the ice cold winter too and you need 195 stat for 10* out. My Corolla XRS will run at 185* all day long ever since it was new and the heat is hotter than hot I have 220,000 miles on that one. My 2013 Ford F150 runs at 205 all day long it has 25,000 miles That I am sure is for the emissions. 180 stat for summer, 195 stat for winter unless you are in the south then 180 stat.
I drive in -20, 195 is a must lol. I have a shroud, but the g bodies were never designed for a 350 sbb, so the front is a lot further from the shroud/rad area than say a 307 olds or a 305 that would have been in there, certainly more so than the 231 it replaced. I'll try a 2" fan spacer first to get the fan in the shroud.
I understand I had to deal with that kind of cold too. If you can get the fan closer that would help. Do you have the 7 blade fan. I had to run the 195 too. When my Rad was new it would hold 180 no matter what now it runs at 190 rad probably needs cleaned out now. I think the fan is half in and half out at the shroud. Even with a 195 -20 is -20 takes a while for that lol. Used to cover up half the rad with cardboard during that cold ass crap. I have finally come to the conclusion I just Hate winter it only took 60 years. lol
I had that issue before when I was running a stock copper 3 row V8 radiator with the 5 blade with clutch. I tried summit street/strip fan that mounts solid to the water pump. I felt it helped out BUT I also noticed I was going through water pumps. Eventually, after trying some more things ,a champion radiator w/ 2 row 3/4 wide tubes which was a waste of money.i ended up rounding some money up to drop in a a new Northern Radiator 2 row with 1 tubes and dual 11" spal fans. I wish I did it sooner. It took care of my hot idle and my cruising speed with ac running.Josh
E fans but you'll need the harness yet, these are knock off of spal dual 11" fans. I have the spal brand but I got them used: https://www.ebay.com/itm/Dual-11-El...684127?hash=item3f4cc16bdf:g:fy8AAMXQ~6VQ7kxV
