[Z06] 160 thermostat

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Nov 28, 2012 | 06:16 AM

#21

jeff longhurst

7th Gear

Joined: Oct 2012

Posts: 7

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My understanding is that not only do cars have lower emissions with hotter temps, but they also get better gas mileage since the fuel atomizes better when the air is hot. Remember when the LT1 engine first came out, the first smallblock with reverse flow cooling that pumped coolant into the heads, then through the block? Previous generation motors pushed it thorough the block then into the heads. This change not only gave the LT1 more power, but it also allowed for the very high for that time compression ratio of 10.4 to 1. Did GM know this change would improve performance for the past 30 years and not do it? Absolutely! Its about cost and beating the competition. Honestly, when I look at my corvette, the cheapest thing in the design is the engine, thats how they can afford to put them in camaros, the money spent is in the chasis, body, suspension and rear end. Water not burning off the oil is irrelevant, just because the oil in the pan is not 212 degrees F does not mean its not 220 or more in the head. We may lose a little mileage and have more emissions, but the car will perform better in the real world, especially on a hot summer day.

Nov 28, 2012 | 01:19 PM

#22

JeremyGSU

Drifting

Joined: Apr 2008

Posts: 1,464

Likes: 32

From: Ocala FL

My car runs cooler on the street with 160 but I didnt notice a thing when tracking.

Nov 29, 2012 | 04:58 AM

#23

jeff longhurst

7th Gear

Joined: Oct 2012

Posts: 7

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Quote:

Originally Posted by JeremyGSU

My car runs cooler on the street with 160 but I didnt notice a thing when tracking.

I believe it. With the stock tuning and t-stat in the summer even in Minnesota my coolant temp gets up to 230 before the fans come on and I can tell a huge difference compared to when it is 187 on a cool night. Have you seen the alcohol cars hotlapping on pinks? They can be slower on one run but on multiple runs they beat the gas cars since heatsoak slows gas cars down even though they are probably running 160 ts. I think if you can lower the temperature enough, you can advance the timing a little, and even run zero weight synthetic, it adds up to a little. Stock C5 tuning pulls timing when the intake air is over 114 degrees, that may not sound like it would be often but if you measure air temp 2 feet from pavement under the hood it can make a big difference. Often the turf temperature on a football field is over 115 on a hot day. But on a one run, cool warmup at a track, there would not be a noticeable difference on the same car.

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