nitrous on ZZ4
05-02-2002, 10:36 PM
#1
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nitrous on ZZ4
Does anyone know how much nitrous power the ZZ4 engine can hold? It does have a forged crank, but the pistons are silicon coated aluminum. I'd like to spray maybe a 125 shot. Should I just throw in some forged pistons and go with a bigger shot, or could those al. pistons hold that shot? Any thoughts?
Dauntless
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05-03-2002, 09:54 PM
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Car: 1992 B4C 1LE
Engine: Proaction 412, Accel singleplane
Transmission: built 700R4 w/custom converter
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Re: nitrous on ZZ4
Originally posted by Dauntless
just throw in some forged pistons and go with a bigger shot Dauntless
just throw in some forged pistons and go with a bigger shot Dauntless
05-08-2002, 02:59 PM
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Car: 1986 IROC-Z
Engine: SBC
Transmission: Manual Th-350
Axle/Gears: 9" Moser 3.89's Spool.
ZZ4 on Nitrous
The ZZ4 is a pretty tough motor but 125hp shot should be good. Persoanlly I think that a 150hp shot could work well with the proper engine support 
i.e FUEL PUMP)
When pushing that much HP a MSD 6AL or Equivlent Ignition would be recommended.
i.e FUEL PUMP)When pushing that much HP a MSD 6AL or Equivlent Ignition would be recommended.
Last edited by IROC4LIFE; 05-08-2002 at 03:01 PM.
03-17-2009, 09:12 PM
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Car: 2005 Chevy Colorado/ 1985 Z28
Engine: fast burn zz4
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Re: nitrous on ZZ4
stirring up an old thread here i know, but did you ever put the 125 shot through the zz4? i'm looking into it too, i tore my fast burn zz4 down this winter and freshened it up a bit... i replaced the rings with the speed pro plazma molly rings just incase i decided to run nitrous... also i have an msd 6A not the 6AL as mentioned above, will that be a problem?
03-18-2009, 02:39 PM
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Re: nitrous on ZZ4
stirring up an old thread here i know, but did you ever put the 125 shot through the zz4? i'm looking into it too, i tore my fast burn zz4 down this winter and freshened it up a bit... i replaced the rings with the speed pro plazma molly rings just incase i decided to run nitrous... also i have an msd 6A not the 6AL as mentioned above, will that be a problem?
I never used more than the 50hp jetting because of traction issues (and that was mostly just for testing and to get a good looking dyno sheet
but I felt like it would have been fin at 125hp. Trending Topics
03-21-2009, 07:49 AM
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Car: 2005 Chevy Colorado/ 1985 Z28
Engine: fast burn zz4
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Re: nitrous on ZZ4
thanks, i'm still going back and forth on whether or not i should run nitrous
03-21-2009, 01:38 PM
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Car: 89 Trans Am GTA
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Re: nitrous on ZZ4
Nothing to worry about at all.
Just make sure it dont run lean and you will completely fine.
100hp shot easy, should be fine at 150 really, again, just make sure
it dont run lean and it should be fine.
MAke sure your fuel pump is ok, have you a fuel pressure guage?
Just make sure it dont run lean and you will completely fine.
100hp shot easy, should be fine at 150 really, again, just make sure
it dont run lean and it should be fine.
MAke sure your fuel pump is ok, have you a fuel pressure guage?
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