- Oct 18, 2020
- Reaction score
Hey Guys! I want to know. How much engine horsepower is lost at the wheel on a big block mopar with a 727 trans and 3.91 gears?
I posted my engine dyno sheet in our forum. It made 665hp at 5800 and 691tq at 4500. Put the car on the dyno with full trim and it only made 480hp at 5800. That's a massive lost guys! 400/512 stroker with trickflow 240 heads 10.5cr.Anything is a guess. So many variables. Is the engine stock ? What type of fluids do you use ? Is the transmission, torque convertor stock, Is the engine tuned properly ?At what rpm ?and on.....
Depends on the whole package. I run a 9" PTC 5600 nitrous converter and drive it all over on the street. Back and forth to work, to the stores, cruise nights, car shows and race it as well.Slippage kills power and shortens transmission life.
High stall convertors were designed for limited track use like most other high performance parts. Not daily street use.
Street cars are not good race cars and vice versa.