Whats the biggest shot have you heard someone using on a slant 6. A plate or fogger system.

I think that most of us go with the smallest shot that will get the job done.
Will

Speak for yourself, Grasshopper.
I have used a 150 fogger on my 170 engine, "stock" shortblock, with good results. At 175 shot I have broken parts.
I have two 125 plates on my 225 engine, but have yet to use the second stage.

There is no such thing as too much nitrous, just not strong enough parts.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

i have been building a 225 bored 45 over to a 231 with kb pistons and k1 rods stainless valve comp cam everything and aussie 4 barrel intake with a 570 holley and i just got my nos fogger going to drill the ports this weekend hoping to have on street real soon

What pistons are those? Are the hyperutektic? I don't know for sure, but have heard the Hyper pistons are not recommended for nitrous. However I have stock cast pistons in my engine, and don't have problems, unless I get greedy, and screw up the tune.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

The idea that you can't spray hyper pistons is a fantasy. You do have to have your top ring gap way wide though. By the same token, if your tune-up is off even forged pistons will suffer thermal events.

I sprayed mine at 150 for a whole pile of runs and never had issues. 175 was a different story, but that was because my setup was fuel rich. I lifted top ring lands twice. Fuel rich is just as bad as nitrous rich.

One thing you have to remember when spraying a lot is that you can't snap the throttle shut on it, you have to drive out of it and let the fuel clear out of the cylinders or it collects in the top lands and ignites.

Not sure how much anyone else sprayed, but I know Mike and Blaine experimented at 225 for sure, and maybe 250.

Best advice I can give you is start small and don't get greedy. Nitrous is very unforgiving if you are off on your tune.

On true street tires 100 or so will be about your limit. Radial T/A's held mine at 75, but they weren't happy at 100 much.

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Official Cookie and Mater Tormentor.