Thread: Am I going to kill my 460?

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Water injection is a process in which you can inject a small spray of water in to the carb/manifold. It should be a last resort. First it is more important to me and other builders here to find the problem, repair or redo it right and then tune. Yes water injection does work for cooling the intake charge and has a few other tiny improvements (key word; tiny). It just a band-aid for your problem. I still stick by getting this problem resolved the right way. It'll definitely help you understand this problem for futures set ups.

Since there are differing views here, I will probably print out this whole thread and show it to the guy to see what he says.

I'm assuming that it isn't loose, because the double-roller timing chain was new when the motor was rebuilt, and that was only a couple thousand miles ago.

I run a 429 in a 57 Ranchero. The early heads and a Stealth with cam
and headers. I don,t see why the manifold would be a problem. I did take
mine down to 10.1 comp.ratio when rebuilt. My car isn't as heavy as yours.
Maybe take out some timing and run 92 oct.
good lick, Ron

you mentioned that it pings on wide open throttle. I could be way off so someone correct me if i am, since it's such a big motor I would think a bigger carb would help. a 750 cfm should be good, you should also check out your fuel system, what's your fuel pressure? make sure its getting plenty of fuel and air and not too little of either one.