OK i want more H/p im looking at nitrous and want som where around 125h/p im looking to shave 1 second off my time i have a 388 stroker motor it was a rpm airgap intake and holly 4 barrel im looking for a good plate system and desently priced. i was thinking NX works or NOS. i just want some opionons. also i have a after marked holly fuel pump that pumps in to the fuel filter and is spit out of the filter to a return and to my carb where would i tap in to that for nitrus????????? HELP ME out here im a newcomer to the worl of nitrus.

 

Newcomer to the world of spelling and grammar as well..

Curious, how do you get a 388 stroker? I've only seen 383 strokers from 350s, and IIRC it was a 382 stroker from the 346 LS1s...

 

A 388 is a 383, cept it's bored to 4.060 instead of 4.030.

 

I like NX.
you can tap into the fuel line anywhere between the fuel filter and the carbs fuel inlet to pick up the fuel for the nitrous system. From there run it through a fuel pressure regulator and then to the nitrous systems fuel solenoid.

The nitrous kit will have complete instructions with it on how to plumb it (At least the NX kits do).

Don't let the Spelling bee judges rough you up. At least you didn't call it "NAWS" (ignorant for "NOS") instead of nitrous regardless of brand or nitro as in nitromethane.

 

ok You said you like NX the best so what makes it better than the others... i meen NOS was the first right? and anyways i do have a high presure fuel but i would like to know is it going to be enough considering i have a return off the filter? should i just do away with the return...? i have it because i was cheap back in the day for a fuel regulater and i had a carb on there that the fuel presure by past the floats in the carb... by the way thanx for the input guys heres a pick of my car

oh yeah think i could go any higher with out messing up my moter like 150+? it has stock heads ported rpm air gap intake comp high energy cam eagle rods? stock 400 crank... 9:1 pistons not fordged give me some input... do you think 125 h/p shot will shave a second off of the 13's it should now 350th tranny with 3.43's in the back

 

Originally posted by tomster03:
I don't particularly dislike NOS.
They make some top grade stuff. You just have to make sure to compaire apples to apples.
Unless they have changed, they rate their kits at crankshaft/flywheel HP (as on an engine dyno). NX rates their kits at wheel HP (as on a chassis dyno). So an NX kit that is rated at 100 HP is supposed to make 100 HP at the rear wheels and it's making more at the crank. If an NOS kit rated at 100 HP is supposed to make 100 HP at the flywheel/crank then it is making less at the rear wheels.
Generally speaking you get smaller solenoids with most companies kits than you get with NX kits. Larger solenoids can flow more, making more power. The Powershot solenoids from NOS used in their Powershot kits are very small. To get compairable (to NXs) solenoids from NOS you need to get The Cheater kit.
If you compaire the size of solenoids you're getting and actual rear wheel HP of the kit you buy I think you will find NX to be a better value. Phone techs have a hard job but I have heard more complants about NOS phone tech than NXs. Actually I have heard mostly good and very very few complaints about NXs tech staff.
I have also heard a few complaints about NOS instructions but I haven't seen any problem with the ones I have personally seen. The NX instructions are very good too.

This question of whos nitrous kits are best comes up all the time here. Try a search of the board archives using all of the search terms "NOS", "Nitrous Express", "NX", "best", and such.
Pressure is only a small part of the story. Volume is what matters first. What is the volume of your pump at working pressure (about 6 PSI)?

When using nitrous it is not a good idea to have a rigged fuel system, period! Lose the unregulated return. If your pump is of sufficient volume, then T off the fuel line after the filter and install a fuel pressure regulator on the carb feed line and one on the nitrous systems fuel solenoid feed line.
If your pump is not of sufficient volume to run both the carb and nitrous system then you have some options. Still lose the unregulated return line and put a regulater on the carb feed.
Then option 1 is buy a larger volume pump and proceed as above.
Option 2 is add a second dedicated pump, filter and regulator just for the nitrous system.

I (and I think most people) would recommend keeping it 150 HP or less with cast pistons, especially until your knowledge of nitrous and tuning are solid.
There are just too many variables (tuning, traction, driving, etc.) to guarantee it but generally speaking 100 - 125 HP should be good for at least a solid second in the quarter.

 

thank you have been a great help!!!!!!!! :hail: