I just bought my 68 bird about 2 months ago. The car ran really sluggish so i finally took it to get dyno tuned. Base hp was 117hp and after carb adjusting and timing it went up to 167hp. Now my question is what the hel l i thought these 400 were pushing at least 300hp. Its a stock 400 with an edelbrock performer intake and a holley 650 heres a pic of my bird