a standard good head give u about 150/160 psi of compression,that head skimmed abit about(5 thou) 165/170 psi...my race head was 230 psi about 50thou off.make a big differentsSpeedle said:
not all of us bob,What i dont understand is u lot ******* over a recon standard head and when i put my spair race head on ebay nobody was interested apart from one lad from on here that won it,that head that he won was far better than this head.your loss his gain