I am in the process of getting my motor parts list together. I will be spraying a 150 shot with Mahle Pro Pack forged pistons/scat forged i beam 6.000" rods. I will be running a Bret Bauer custom cam. I have heard nitrous motors like high compression, is this true? I will be on stock heads, and was thinking about a 11:1. Does this seem ideal?

 

Maximize your N/A dynamic compression ratio (DCR) for the fuel you plan to run on the street, then put the nitrous on top of whatever the results of that calculation are. There is no "ideal" answer. You could go a lot higher than 11.0:1 SCR, and put a big shot on top of it, but you're not doing it on pump gas. If you already planned to drive around with $9/GAL C16, push the DCR up.

 

I plan to run on 93 octane.

 

The C16 is a “leaded” VP 110 octane race fuel I believe, what will the C16 w/ lead do to the front o2 sensors on an LT engine?

WD

 

Talk in terms of DCR not SCR. What is the DCR you plan on running?

 

What is the difference between DCR and SCR? I am new to building motors.

 

http://www.empirenet.com/pkelley2/DynamicCR.html

Here is a little bit of info. What I did was start to read posts and do research plus talking to my engine rebuilder. My rebuilder had no problem suggesting a high DCR to me. I was skeptical at first but I have not had problems but then again I spent the money on a dyno and know how to do my own tuning. We will see in July but I can always just pull timing for the summer...I don't really care about the 10 ft-lb of torque I would lose for that time of year anyway.

Ben

 

Thanks for the link. I am building my own motor, just getting some basic machining done and have been talking to Bret Bauer about what pistons he recommends for what I want. Hopefully I can get more informed before I start spending more money in the next couple of weeks.