ok another nitrous question.

I just bought a powershot nitrous system at a local swap meet. i was not going to instal nitrous because i don't know enough about it and not worry about my motor.

here is my question. i have a stock shortblock 350 with a better cam heads edelbrock intake and carb. headers and 3" exhust. I am wondering. they say that the kit i bought is factory setup for 125. will my motor pop with this or will i be ok. i would not use it all the time but once in a wile at the track. I just don't want to loose my motor.

also i have another block would just putting hypertonic pistons help with this power adder or do i need to have forged everything.

thanks for any info

 

As long as your motor is in good condition (not milage but health wise) I would say 125 shot will be perfectly fine. If you did decide to increase the shot you will definitly want to put a good set of forged pistons at the very least in there. Hypers and N20 are like walking on eggshells. They crack under alot of heat which is exactly what nitrous produces as well as a whole lot of increased cylinder pressure. I think if you just stick to that shot you will be fine. Strap on and have fun! Be sure to keep a close eye on your plugs and dont forget to pull some timing out of the motor before you spray just to be on the safe side.

 

Hyper pistons are fine on nitrous as long as you have a loose enough ring gap. Forged are better because they're ductile, but they have to be ran loose because they expand alot. For a daily driver and a modest shot I'de stay with the hyper pistons just have them put a looser ring gap in. On your stock motor, a 125 shot should be cake, make sure your fuel supply's good by checking or replacing the pump and filter, take out 2 to 4 degrees of timing and run 1 stage colder plug and you'll never have a problem. Just do realize that nitrous is the crack of the automotive world, once you get one hit you'll want more and more and more

 

thanks for the info. i am running the stock tbi elec fuel pump with a mallory return style regulator. is there any way to test the fuel pump so i know how much i should have and how much i need? thanks again for the info. i was worried about 125 shot. people around here say that it is too big a shot. i just thought i would check with people who have more knowlege.

 

I wouldn't run the stock TBI fuel pump with nitrous, it's probably taxed out the way it is. I'de upgrade to a larger low pressure in tank pump, or better yet sump the tank and run another type of high volume pump like a Holley blue, or a high volume block pump.

 

when i bought the no2 kit at a swap meet i got a holly inline pump with it. i cannot find a number on it but it does have 3/8" lines on it. i don't know if i could just put that inline and pull through the pump in the tank or if i should drop the tank and put a whole other sending unit in.

 

It'll work either way. You'll get a little loss of flow because of the in tank pump but it'll still work and be alot safer than just using the TBI pump.