Guys I have this lingering problem with my 377 ci destroked 400 small block chevy. The engine flat lines on power and torque at about 5800 rpm. This was felt while driving the car and proven on the dyno. The camshaft rpm range is from 4000 to 7800. I feel there is no way I should reach max horsepower at 5800, something must be wrong.
This is what I have in the motor and have done so far as to trouble shoot the problem.
My compression is at 11.4:1 with flat top pistons. I am running Victor Jr 23 degree aluminum heads and super victor intake. I have a lunati cam with 266 int duration @ .050 and 270 ex duration @ .050, my cam lift is .640 on the intake and .646 on the exhaust with 1.6 rocker arms. I have cam matching valve springs which are set to the specs for the cam on height, the springs were tension tested and met specs. I'm running a MSD 6AL with an MSD billet distibutor and blaster coil. I have a Carb shop holley 750 double pumper carb, that was flow benched according to Carb shop at 928 cfm. I'm running a 4500 stall with 4.88 gears. I have gotten the car to do 11.50's but it ought to do much better considering it's running out of power at 5800 rpm.
Any of you experienced have any ideas what might be the problem with this motor.