This is one of the things I talked about. You have a 3.5" opening (good) 3" tubing (ok), and a 2.3" throttle body opening with a blade in the middle, and then likely a 3 to 3.25" opening after it as it enters the intake.
You're killing the airflow.
The T56 is heavier and will be more parasitic. It's just nature of the beast.
3090 without you...how much are you? That's heavy.....
Just for comparison purpose, tripleblackvert on here has a stock bottom end, TW headed engine and has been 122 mph (high 10's). His car is 2780 WITH him in it.
These little engines really respond to weight. That's how my little NA, pump gas 363 goes 9's. It's in a LIGHT car
