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Nitrous boosting a stroked 4.6 3V

3353 Views 5 Replies 5 Participants Last post by  cman
I want to get lots of power but I want to stay NA. I thought of nitrous. Since doing a stroker changes your internals, how much power can the block handle? What are parts needed to maximize boost and durability?
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The block & crank can handle 700+rwhp but the rods & pistons won't handle much more than 450. If you're going to keep the engine internally stock for the foreseeable future, I suggest you don't go higher than a 125 shot.
With the forged internals, how much shot can I use just engine wise?
There was a local guy with a 302 stroker that had forged internals at the strip last year. I believe he said he was pushing an 11.5:1 compression and running a 200 shot.

Why are you stuck on staying N/A? If it's cost, a throttle body wet nitrous system with a bottle heater, remote opener,... you're looking at $2,000, not including the refill every ~10 1/4 mile runs.
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With the forged internals, how much shot can I use just engine wise?

A prepped block with a custom pistons and rings designed to handle nitrous, you're only limited to the amount of nitrous you can feed it.

A direct port system would easily feed 400hp worth of N2O.

A two stage system could feed it 600+hp


Image gallery | 4.6L 3V Direct Ports


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With a stout short block and a good set of head gaskets and head studs you should be able to get tons of power using N2O as long as your setup is just right and you spend a truck load of $$$$$$.

The question is, will the rest of the car (Drive shaft, motor mounts, chassis, suspension, clutch/transmission, and most important-fuel system) handle all that extra power safely.
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