Ok. I talked to Richard at WCCH today about some different stuff, and he is a very knowledgeable guy about a lot more than just heads

I'll call him up tomorrow to clear up these last few questions, then it ordering time

 

Yeah Richard n=knows his **** about alot of stuff, I would take his opinion/suggestions into consideration greatly.

 

I'd personally like to have a daily driven 10.0:1 408 with 8psi that I can pulley down to 12psi for the track. Something rather important in a choice like that is your choice of how you're going to make the boost. What device is going to move the air?

 

Turbo

 

Diggin up an oldie. What was the final CR and boost level? (Before you pulled it and after)

 

Before was 9.4:1 SCR, got detonation at about 6 psi. It's being rebuilt to somewhere between 9.0 and 9.25:1.

 

Nice thread, lot of good info in here!
Thanks for pulling it up Slowhoe, I don't care what the other members on here say about you, your definetly good for more than just funny *** one liners all the time!

 

One possibility that was brought up for the detonation I'm having is the lack of heat removal allowed by the stock exhaust manifold I have on one side and the log manifold on the other. Those, combine with the LS6 and/or 5.3 heads (I tried both), could have cause detonation at low boost levels. I thought it was weird that I could see almost 10 psi on a stock motor with the Radix with no detonation but only about 6 with the built one. This would explain that.

I have been recommended to use a set of 317 heads from this point forward. Apparently they are better flowing on the exhaust side and will be more efficient at removing heat from the combustion chamber, so should be better for detonation.

 

Are you changing cams while you're doing this?

 

Yep I'll be running a 218/224-ish cam on a 114 LSA I believe.