Bridgy

Hi is anyone running these are thay any good ?

ZEN357

Never heard of them. Have you looked at a set of Edelbrock heads for comparison?

Bridgy

That are made by edelbrock

RacerHog

Make sure the have a good shop work them over before installing them. But you should do this with any cylinder head you use.
E-Street are a ok, run of the mill head to use...

Iowan

They are allowed as stock replacement heads in some of the stock class cars, a friend built a new motor for his E/SA car using these heads, new 383 did not make more power than cast iron heads. Car is capable of more than a full second under index.
As I've said before Edelbrock heads no thanks, get Trick Flow 240s.