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PerformanceTrucks.net Forums (https://www.performancetrucks.net/forums/)
-   Drag Racing (https://www.performancetrucks.net/forums/drag-racing-139/)
-   -   New world record sbe 4.8! (https://www.performancetrucks.net/forums/drag-racing-139/new-world-record-sbe-4-8-a-546123/)

Blown06 10-10-2016 12:37 AM
Originally Posted by Vortec350ss (Post 5381637)
And your engine feels like it's making far more than 100 more... what is your drive loss from the blower? 150? More? That means the cylinders feel like they're makin way more power... that's where a turbo becomes hugely beneficial at these power levels.

Great run!
According to the testing that Morris has done, the F2 at the blower speed I was running.......it soaks up 250 hp. So if I was getting a true 1100 through the flywheel, the bottom end and head gaskets where feeling 1350 or so.

03regcab sierra 10-10-2016 07:59 AM
Originally Posted by Blown06 (Post 5381714)
According to the testing that Morris has done, the F2 at the blower speed I was running.......it soaks up 250 hp. So if I was getting a true 1100 through the flywheel, the bottom end and head gaskets where feeling 1350 or so.
That's robbing quite a bit of power but hey it pushes your truck to an 8 second pass so it's impressive none the less.

I'm calculating the truck to be about 1100 flywheel hp. Having a 4l80e trans and a 14 bolt rear axle it's robbing a lot of power as well.

Going back to test this Friday. If we can put the power to the ground I'm hoping to run a little better than last time out.

03sierraslt 10-10-2016 10:22 AM
Believe it or not the 80e doesn't rob hardly any more then a 60e. The mechanical advantage in lower gears is different due to the ratios but in a true 3rd 1-1 pull they are similar.


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