What would be a safe size of nitrous to use on a lt-1 with forged pistons and entire fuel system done?

 

With forged pistons you can blast 150 to 200 all day long. Above 200, I'd be careful. The Opti-spark doesn't allow you to adjust timing easily, and you should pull a couple of degrees out when you spray. One option is a timing retard controller. I have a friend with one, along with the MSD 6AL, who runs a 300 shot. He just pulls 8 degrees out of the timing when he arms the system.

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91 Firebird Formula. Converted to carb. Holley 750. Forged Flat top pistons. 10.5 to 1 compression. ZZ-9 Cam. Ported L98 Heads.
150 shot NOS, 700r4 w/ 3000 rpm converter and 3.73s in the back. Headers w/ full dual exhaust. 27.5 inch McCrearys. (free slicks)
12.98 @ 106 Natural,
11.83 @ 113 NOS.

 

as long as you don't have the hypercrap pistons then do what you want. I personally wouldn't pump more than 200 into a stock bottom end if you want to keep that motor for too long. They're sturdy and will take some abuse but 300 hp on top of a motor that already makes 300 hp is a good shock to the system - pretty cool though!

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1991 RS LT1
every imaginable bolt-on, and an all-forged 355 on the way with an ATI following in '01

2000 C5 Coupe
black/black 6-spd, optional polished rims, 'mostly' stock....

"So what DOES the back of a Mustang look like?"

[This message has been edited by Brett (edited September 20, 2000).]