drewkins
Well-Known Member
Looking at replacing my head on 1970 318. I have a ld4b intake with a holley 600 on it. I am looking to increase it breathablilty. I have looked at 302 casting heads and magnum heads. I have heard that stock magnum heads are prone to cracking. Looking to get 300 to 350 hp out of the engine after complete rebuild is done. And I dont want to spend a ton of money either. Any advice?