Im building a 408 stroker and would like to carry my nitrous kit over with the new motor. Im spraying an 85 shot currently on my stock 5.3L, would like to spray around a 100, maybe 150 shot very safey on the new motor once I am finished building it. Before I finalize the last few parts choices(pistons mostly) I would like to know if I should run much lower of a compression or not. Right now im coming in at about 10:1 with the pistons im considering, though I could lower it down to 9.25:1 if yall think this would be nessicary. The rods, pistons, and crankshaft will all be forged, and bolts/studs i'll be using will be ARP.

Is compression a big deal with a 100-150 shot?

-Lurius

 

Go with whatever compression you want, the nitrous will not make a differemce depending on compression.

I would be spraying a bigger shot if I were you since you have the forged motor.

 

Awesome. I had been told I needed to run lower compression for nitrous but that 10 was fine for 150.. Awesome.. I'll probobly up it to 175 to start then =)

-Lurius

 

We run max compression on all my N2O motors.

15.8-1 in my fast car and 13-1 in my slow car.

Compression = HP

 

You do not need to lower compression for n20 I run 12.1 on up to a 200 shot on 93 octain

 

 

I think the guys are right,really the only need for lower compression is the use for turbo or supercharger.I am in the same boat u are with the 408, i have 10.5.1 compression planning on spraying 200 shot....good luck with the new motor !

 

Thanks! I am aiming now for 10.5-10.. seems well rounded, will run no prob on 93 octane, and is about the stock 6.0l compression ratio.

-Lurius

 

Yep, nitrous loves compression.
Robert

 

Hey, Lurius shoot me a PM when u get the motor together with the dyno numbers...

 

I am at 11.2 to 1 and spraying a 200 shot. seems to work great for me.

 

finishing my build right now also, 12.7.1 to 13.1comp. and will probally do a 150 shot, fully built 408 iron block should be fun