Re: Jon Kaase SR71 Cylinder Heads

738drvr February 7th 2022, 3:00 am

Pages 4-6 show you how much better they are than the P-51. Quite a bit. Kaase has told me they are very close to the Boss9. That’s why I bought a set instead of the Boss 9s. Kept my headers, intake, valve covers, etc… They are an amazing head for what they are. Kaase told me they are a real “over achiever”. I agree.

Mark Miller February 7th 2022, 10:35 pm

738drvr wrote:Pages 4-6 show you how much better they are than the P-51. Quite a bit. Kaase has told me they are very close to the Boss9. That’s why I bought a set instead of the Boss 9s. Kept my headers, intake, valve covers, etc… They are an amazing head for what they are. Kaase told me they are a real “over achiever”. I agree.

Thanks for the information!!