5.0 Mustang Nitrous Build. First Mustang, And First Time Using Nitrous

Robert Thompson said:

Hello, my name is Robert and I am in the process of rebuilding a 5.0 mexican block for a friend. I would like to get a custom grind cam for the build.

I am a GM guy so I know who to go to when I need a cam done. What are some good places to go to get a cam done for a mustang?


-Robert

Click to expand...

Welcome Robert. First things first....If you know who to go to for a cam for a GM, well, that same guy, if he is worth a damn, should be able to make a cam for a Ford. The design criteria are the same. Any cam designer will design based on what the engine wants, which is based on cylinder head selection, exhaust, intake, gear, tire, weight, trans, usage and on and on and on.

Welcome. Your ring gaps will need to be larger if the motor is being built for spray. A small shot, like under 150, can get away with stock size gaps, but I would follow the piston manufactures recommendation on that.

Timing can be retarded at the distributor, but will mean that you have to leave on the reduced timing. Another option is to use an MSD box with a built in timing retard feature.

I have just started using the NOS mini progressive controller and I would really recommend it for the price, ease of use and features. It can signal the MSD box so it will pull timing.

For your other questions about fuel and auxiliary tanks, I would recommend reading through the nitrous section on Yellowbullet. Also, talk to some big name nitrous companies, like Induction Solutions.

What is the rest of the combo and how much are you going to spray?

Joe

The manufacturer of your Pistons, and/or ring set will be the best person to ask about potential ring end gap for the ring set you install.

I agree w/ Bullit347, if the cam grinder don't know nothin' about any other engine other than a GM, he wouldn't be my choice for a cam in any engine....( including a GM). In actuality, the benefit that A nitrous profile camshaft would offer doesn't come into play until you really start throwing stupid amounts of nitrous at the engine ( in excess of a 200 hp shot) if you have no experience w/nitrous, jumping off in something that deep will more than likely get you a bunch of broken, burned up stuff, until you get comfortable with using it, or have somebody that knows what to look for in the tune.

I always used a seperate enrichment fuel system mounted up front for my nitrous engines, and they all had carburetors. There are plenty of suppliers making 1 gal fuel cells for just that purpose,..but again, it all depends on how much nitrous you intend to use..200hp+ would always warrant a seperate system.

As stated,..there are seperate controllers from MSD ( and others) to allow you to leave the distributor at a set timing curve and will take timing away as soon as the solenoids get activated..as opposed to setting the distributor back statically, the engine will behave much better in its N/A stare ( i.e. Idling, burn outs, staging) if you use the seperate controller.

But all of this is moot anyway...the best advice you can get comes from the tech guy that sells the junk you are attempting to use...id never buy one guys junk, and come on here asking how to use/set it.

A purpose built nitrous engine will still exceed the capabilities of the block, regardless of its Mexican architecture.
As it will when using any power adder.
Power limitations of a Ford small block have always hovered around 500 hp,.Unless you have a real strong understanding of where you are tune wise the engine will show you those limitations real quick.

I've attached pictures of what a stock/mexican block likes to do... this was a 306 making ~330whp n/a running a 150 shot and shifting at 6500rpm.
This thing was well built and well tuned with good balanced internals. I would guess it had less than 50 runs on it, and I know it had zero street miles.
Back in the day our club was littered with these things.

^^^ what they said