Good article about 4 cams dyno'd on a 377 LT1 and using sub-par Edel heads.

http://www.popularhotrodding.com/tec...ams/index.html

 

This is a great alternative to an LSX swap!
Bernie

 

There was still more power to be had. Replace those heads with something decent to match each cam, replace that Edelcrap intake with a ported stocker and add 1.6 rrs. Your looking at another 40-50fwhp.

I have the 503 and can't understand why peak power was only at 5900rpm on their test. It should be around 6300-6400 even with stock heads. I think the intake manifold and the use of the stock injectors was restricting. They could of squeezed another 10-15hp out of it.