Dynoed the 4.0 (updated with 3.8 vs 4.0 chart)
#1
Rennlist Member
Thread Starter
Dynoed the 4.0 (updated with 3.8 vs 4.0 chart)
Took the 4.0 to TopSpeed Motorsports this afternoon to see what the stock numbers were on it. With 500 miles on the clock I know it is a little early to put the numbers out there but it came back pretty good. 457 rwhp and 325 ft lbs of torque were the peak numbers. Did 4 runs and the last 3 were within 4 rwhp of each other. Will post a chart as soon as I get it emailed to me.
Updated the post a little bit. Now we have the dyno chart that compares a stock 3.8 to the 4.0. Both cars were dynoed on the same dyno on different days but within the same week.
Updated the post a little bit. Now we have the dyno chart that compares a stock 3.8 to the 4.0. Both cars were dynoed on the same dyno on different days but within the same week.
Last edited by Seth Thomas; 02-06-2012 at 09:22 AM. Reason: Updated with stock 3.8 to 4.0 chart
#3
Rennlist Member
Thread Starter
Here's the dyno chart
Trending Topics
#12
Addict
Rennlist Member
Rennlist Member
GT3 have been vastly underrated since 2004, nothing new.
By the time Seth's car is broken in, it will be in the 470whp range, just with driving miles. Amazing powerband. At 6,000 rpm is already putting more power down than a 996 GT3, and it just goes North until 8500rpm. Add the fact that it is lighter than the 996 GT3, it comes with both shorter gearing, a short R&P, and it must be on a new league.
By the time Seth's car is broken in, it will be in the 470whp range, just with driving miles. Amazing powerband. At 6,000 rpm is already putting more power down than a 996 GT3, and it just goes North until 8500rpm. Add the fact that it is lighter than the 996 GT3, it comes with both shorter gearing, a short R&P, and it must be on a new league.
#13
I noticed the correction factor is STD. What are your SAE numbers? Your SAE numbers should be about 3% less than STD. For comparison, my stock 10' GT3 did 404 rwhp and 298 lb-ft SAE on a Dynojet 100% stock. Jackie at RAC's 10' RS did 434 rwhp on the same Dynojet with GMG headers, GMG center pipe and a flashed ECU.
Last edited by 10 GT3; 02-03-2012 at 11:06 PM.
#14
Rennlist Member
Join Date: Feb 2006
Location: Wishing I Was At The Track
Posts: 13,674
Received 1,905 Likes
on
981 Posts
By the time Seth's car is broken in, it will be in the 470whp range, just with driving miles. Amazing powerband. At 6,000 rpm is already putting more power down than a 996 GT3, and it just goes North until 8500rpm. Add the fact that it is lighter than the 996 GT3, it comes with both shorter gearing, a short R&P, and it must be on a new league.
#15
Rennlist Member
Join Date: May 2008
Location: Somewhere in a galaxy far, far away....
Posts: 17,108
Likes: 0
Received 259 Likes
on
173 Posts
with the engine being located in the rear the HP loss to the actual rear wheels as measured on the dyno is minimal due to the short distance from the engine to the wheels where power is usually lost.
Cars with front engines have further drivetrain distance to the rear wheels which robs even more power from the crank rating.
i really want 4.0 power in my 997.1
damn!
Cars with front engines have further drivetrain distance to the rear wheels which robs even more power from the crank rating.
i really want 4.0 power in my 997.1
damn!