[Jay S]

Originally Posted by petes67bird

Thanks. I went to my local shop yesterday and chatted about some things. His train of thought was that my compression may be lower than what I had previously thought (he thinks it may be closer to 9:1 or even upper 8's) which would adversely affect the cam I have that he feels would benefit from a higher compression above 10:1. His suggestion was that we can leave the cam where it is, I can install heads (he wants me to drop to 72cc Eheads that he will go through and change the springs on and get me near 11:1), and cleanup my intake and 750cfm carb (said it looks like my accelerator pump is leaking gas). He said this should raise my compression, add about 50-80 horsepower and he can then time and curve everything for me on his equipment. He personally did not like the #96 heads, he also said that all the Kauffmans he has flow tested have not reached advertised numbers, which is why he is wanting me to go with the Edelbrock. We ended up chatting for several hours while he showed me all of his work, great guy.

Unless you plan to make some other changes, 72 cc heads with the way the rest of your engine is set up will require a lot higher octane fuels, 93 and up. The Eddy 87 cc and KRE 85cc d port are much better pump gas options.

[petes67bird]

Originally Posted by Jay S

Unless you plan to make some other changes, 72 cc heads with the way the rest of your engine is set up will require a lot higher octane fuels, 93 and up. The Eddy 87 cc and KRE 85cc d port are much better pump gas options.

Sorry to ask, but could you explain a bit to me. I am not questioning, but like to learn. The builders reasoning was that I can run up to 11:1 on 93 octane without worry with aluminum heads. I currently only run 93 in my build as it is.