Quote:

A engines with 2 bbls are FAMOUS for blocking the crossover ON ITS OWN. Not a good deal at all.

I say on anything that is a street car .. you want to "heat" in the intake to eNhance A/F atomization.




I tried blocking the crossover on my mild 440 in an attempt to cure the heat-soak issues. The exhaust got a resonance from 2000-2300 rpm that was so loud and so annoying that I immediately headed back to the garage and opened the crossover. The resonance came on/off like a light switch.

I have an X-pipe, so that may exacerbate the problem, but I have large Dynomax SuperTurbos so it's not real noisy to begin with. YMMV.