350 nitrous build

hey fellas i have a 350 beefed up. im wanting to put some nitrous on it maybe 150-200 shot. what would i need to do get a harder crank? new connecting rods? forged pistons? just need some into on that


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Harder crank?..... Will need more information. What exactly does beefed up mean? Forged crank and rods and pistons are usually a better way to go with a nitrous setup. The rotating assembly and drive train take a nasty hit unless you plan on using a progressive controller so you may want to save up for a forged crank for sure. Depending on rpm and current hp you way be able to get away with a nice set of I beam forged rods. Some people are good tuners and can get a 150-200 shot to live with cast or hypertectic pistons but chances are you will be better off running a forged piston so they don't hit detonation... Do you have a lot of background experience with nitrous or what its really doing in an engine? Might want to read up before you grenade a motor.. a 150-200 shot is a big shot to say I want to run this much nitrous.

I'm not sure what you meant there, piston material doesn't help stop detonation, aluminum heads help, c.r. and tune are key.

__________________
''Life's tough, Pilgrim, and it's even tougher if you're stupid.''---John Wayne

Midnight Sun Street Rod Association

my apologies to the op. I meant that forged pistons will tolerate detonation longer

I figured something like that. I think the OP has some lofty ideas, and needs to educate himself quite a bit, we all gotta learn, just not do it riding your wallet through the parts store...

__________________
''Life's tough, Pilgrim, and it's even tougher if you're stupid.''---John Wayne

Midnight Sun Street Rod Association

yeah i got a lil bit of knowledge about nitrous. my motor is 355 stock rods crank pistons. got a 480 lift 292 duration cam. edelbrock intake not sure what kind. vortec heads. 650 holley carb. i knew i would need some forged pistons and crank. need to know what the best brand to go with. and i was thinking about gettin the wet sniper system from summit

Yeah if your good at tuning and understand the effects of nitrous, cylinder pressure, ignition timing advance, you can probably get away with hypereutectic cast pistons. How are you going to manage ignition timing when using the nitrous? You can probably keep the block, heads, carb, and possibly the intake depending on the model.

well im definately gonna get forged pistons and crank. but ima get the msd box with the adjustable timing on it

you can run n02 on cast pistons and a cast crank if you don't go crazy with the hp level.

stay under 150 and your engine will live a long happy n02 life.

the correct amount of timing retard and right amount of extra fuel and cast piston will last a long time.

I had a friend that ran an autozone short block and went though two bottles for no2 every week for over 2 years.
Ran a 4.56 gear, 292H compcam, 3500, stall, spool, sportsman II heads, ...... Finally had a rod knock, after racing it almost every week, street racing, and used the car as a daily driver.

what did he do to keep the timing in check? did he have a msd box with the adjustable timing on it? what did he do for the fuel?

If you are concerned with bottom end strength then if nothing else put good steel rods in it with high grade bolts, dollar for dollar these will provide the extra beef value better than any other component IMO. Dont go nuts with the RPM, a rev limiter is a good idea. I am not fan of NOS without all forged bottom end but as 454 mentions it can be done if you keep it on the tame side.

The timing retard needs to be from a ignition box unless you want to dial back the distributor by hand every time you plan on juicing it. You can also use an HEI ignition module with a retard terminal (if using this type of dist)but investing in an ignition box is a real good idea for NOS. You can connect the nitrous solenoid/valve power and the input to the ignition box retard signal in parallel so everytime the solenoids are energizied the ignition retard is active.

Electric fuel pump with regulator for everything. Add a low fuel pressure cut out switch wired in series with a carb throttle plate switch and the driver arm switch to fire that solenoid mentioned above along with the fuel solenoid and ignition retard. There are a number of ways to skin this cat.

when using a typical no2 plate under the carb, the plate gets no2 and fuel from 2 different electric valves. Best to buy a small electric fuel pump just for the n02 system.

You can even use a small 1 gallon fuel cell for the n02 system and run racing fuel into the no2 plate. That is what I did on my system.

hey guys preciate the info helped me out alot!!