Compression and nitrous

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Nov 4, 2006 | 10:06 PM

Lurius

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From: Arlington, Texas

Compression and nitrous

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

Nov 4, 2006 | 10:35 PM

brad8266

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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.

Nov 4, 2006 | 11:17 PM

Lurius

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Quote:

Originally Posted by brad8266

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

Nov 5, 2006 | 06:44 PM

mrdragster1970

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From: Illinois, RT 66 dragway area

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

Nov 5, 2006 | 07:34 PM

LS1Queen

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

Nov 6, 2006 | 03:06 PM

Outlaw Motorsports

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Quote:

Originally Posted by mrdragster1970

Compression = HP

Nov 6, 2006 | 03:26 PM

nastyta

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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 !