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Nope, sorry I didn’t run it with the 180 until I had the chip fan turn on / turn off changed . Guess you can give it a try and monitor things first

Not with no T stat & distilled water. I’m surprised you even got above 150-160 in the cool weather running like that

I ended up getting my fan turn on / turn off set points altered on my chip to better suit the 180 deg T stat. My fans now come on at 188 deg F & off T 170 deg f Maybe think about sending your chip back & re-burned to suit the new 180 T stat?

Changed over from a 160 to 180 T stat since installing aluminum radiator . The 160 didn’t allow warm enough engine operating temperature . If yours is a race car then keep it but for the street definitely go with the 180

Turbo Buicks came with a 180 deg T stat from the factory , 195 deg T stat for NA motors

I might have a complete set of used (but original) bolts for you. Set them aside in my nuts n bolts bin when changing over to aftermarket rear control arms. Lemme dig thru my bucket of bolts this afternoon for ya . Might even have the nuts too!

Here’s what came out

Evap-O-Rust Thermocure worked great for me on my Alradco Aluminum Radiator. https://www.evapo-rust.com/thermocure-cooling-system-radiator-rust-remover/

Another item worth considering is a rear frame rail brace which will tie the rails together and minimize movement. Scot W at GNS Performance offers this kit and really tightens up the rear of the frame https://www.gnsperformance.com/bodyframe-g-body

I’ve got UMI’s rear shock tower brace installed in my G Body with my coil overs https://www.umiperformance.com/home/product/1978-1988-gm-g-body-rear-shock-tower-brace-bolt-in/

Installed a Wilwood adjustable proportioning valve while installing my HydroBoost brake installation. Works great , plus I now have the adjustability of fine tuning brake bias . Of course , had to remove the original factory brass proportioning valve in the process

Thanks, UMI’s triangular front frame brace also places the crossbar in front of the intercooler scoop as well . Here’s a pic

Optimate 6 battery maintainer here 👍 https://optimate1.com/product/om6select/

Have you tried Capers’ Electronics ? http://www.casperselectronics.com/cart/index.php?route=product/product&product_id=284

Found a used B.O.P. GBody Aluminum Bell Housing local to me. Needed it to be able to check /adjust crankshaft alignment to transmission input shaft misalignment after align honing my rebuilt 3.8L turbo V6 in my automatic transmissioned Buick Grand National. Needless to say a dial gauge showed I...

Here’s what I presently have installed. Bought these many years ago before Dennis Kirban sold his business to Paul Castle. Was hoping to tighten up things by a welded together (1piece) brace vs 3 separate pieces bolted together to the frame...

Thanks, I figured he must have shut things down . Unfortunately both the UMI & BMR triangular frame brace will not fit but recall reading SC&C’s design will clear the Buick GN’s factory intercooler

Looking for an SC&C front triangular frame brace for my Grand National. I’m pretty sure I’ve read that this will fit the stock factory intercooler on a GN. Does anyone happen to have one available? Any contact info for Mark Savitski @ SC&C? Can’t seem to find it & am wondering if he’s shut down...

Found one Thanks to all that replied

Looking for a dutt neck (uninstalled) or Dutt Necked Intercooler for 87 Buick Grand National. Shipping to Niagara Falls, NY 14305