Power and engine temp?
Le Mans Master
Joined: Jul 2010
Posts: 6,013
Likes: 726
Factory setting i believe is somewhere around 225. So maybe GM might know something more than us, but there is a lot of internet truth out there and superbe knowledge. I always go with the internet side.
I might be wrong because i got this info off the internet.
I might be wrong because i got this info off the internet.
Melting Slicks
Joined: Sep 2008
Posts: 3,138
Likes: 802
From: Espanola New Mexico
Engines are more efficient between 190-220, good target temperature would be around 200. At higher temperatures the engine is more efficient, but then you have to consider the increase of inlet air temperature lowering horsepower .
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
Le Mans Master
Joined: Jul 2010
Posts: 6,013
Likes: 726
FWIW, the quickest, fastest 1/4 mile runs I ever made were one after another, without shutting the engine off. The only change from stock at that point was a 160° T-stat. I'm a believer in the engine/trans/diff being hot (nothing overheated), with the coldest IAT (intake air temp) you can get.....
I bet if the engine temp was a 1000 * it wouldn't matter as long the IAT is low as it's going to be, it's going to be the fastest its gonna run
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
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Le Mans Master
Joined: Aug 2005
Posts: 5,375
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From: CA.
St. Jude Donor '13-'14-'15
My Corvettes at the track always seem to run the quickest right out the gate on the 1st run when the eng is coldest
I agree though running daily driver temps from about 185-200
Shocked to see my C7 run 225 all the time !!
I agree though running daily driver temps from about 185-200
Shocked to see my C7 run 225 all the time !!
Le Mans Master
Joined: Jul 2010
Posts: 6,013
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Hey, MERRY CHRISTMAS, Helga, and MERRY CHRISTMAS TO EVERYONE!!! Yup, a 2000 LS1. Tuned with bolt-ons, my 2000 A4 ran a best of 12.89@109.97mph. This was thru stock exhaust manifolds, no cats, 3.15 G92 diff. Thru some research I found out the 2000 C5 LS1 had a .500 lift cam, I. & E.. 2000 C5 LS1s had the highest lift, and tighter LSA spec of 115.5°, of any base C5, base being the key, as the C5 Z06s had more lift in all years. I got it down to 12.50@114mph (OK, 113.9!) with Billy Boat shorty headers, which I thought was pretty quick for a stock internals LS1.....🌲🎅
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Racer
Joined: May 2021
Posts: 403
Likes: 64
I got HP Tuners w MPVI2, 160 tsat, and lowered hi speed fan to 190. I'm gonna lower it to 185. It makes more power now and the oil stays cooler and thicker as a result. My oil used to get up to 250f and thin out. Now oil is 212f. Not ever going back to those high temps.
Last edited by douglasjre; Jun 9, 2022 at 11:26 PM.