Well, I am ready to buy my next big mod. I am looking for BIG quarter mile performance on a small budget lol. I flip through Jegs and see the Holley nitrous top mount air cleaner mounted nitrous system. For 500 bucks you can go from 75-150hp. So, do you guys think a 351m can handle 75-100 extra nitrous added hp? It has a holley 4bbl, headers, full exhaust, cam, distributor, all the goods to help support it.

 

i would ask in the 335 series engine forum... there are some real experts in there...

 

If it's a motor you want to hang around for awhile, I'd be concerned with grenading the factory cast pistons. Aggressive timing or bad (i.e. lean) mix would say bye-bye in a hurry.
Otherwise, please video the event and post for our demented entertainment... (LOL!!). jk... I wouldn't do it.

 

The real question is: why add nitrous to a 351M Sorry just yankin your chain!

 

I ran a sand Rail a few years back with the 125 hp Power Shot NOS System on a 400. Similar to the 351M.

It had a Holley Street Dominator single plane intake with a Holley 750 Double pumper, Crane cam unknown spec (not much more than a RV Spec). The pistons were an aftermarket cast, and stock heads, crank & rods.

It ran great, Idled smooth (small cam). The 125 hit of nitrous was not nearly as violent as I though it could be. It was kinda like a second set of four barrels kicking in. I used to say (didn't have any idea) that the NOS took it from 250hp to 350 hp. Best part was the 1900 lbs car it was in.

I'd guess I put 30-40 bottles of juice to it, floated valves constantly from over revving, and it lasted five years or so. It ended up having a piston slap sound of a broken skirt.

I have heard several people say that a 100 hp kit is not really too bad for the motor. (not saying it's good) The Powershot is pretty straight forward, there no mixture tuning, no timing changes, Bolted right under the carb.

Now, I have to say this thing wasn't taking me to work and never moved for 9 months of the year.

I wouldn't have an issue at all putting it on a stock 351m and I wouldn't be too upset when it craps itself either. I have a buddy that would get junk yard small chebbies and bolt his heads and blower on them. Amazing how long they lasted.

 

A solid M block should do fine with nitrous. I am not familiar with the kit, but I hope it is a wet shot. I would never shoot nitrous without extra metered gas to go with it. If your a/f ratio doesn't go too lean (meaning you matched the fuel jet size to your nitrous shot), you should have no trouble.

 

ROFL!!!
Ok, I changed my mind... I say go for it!

 

Well, as I have mentioned.... I wont be too upset lol. I have other backup vehicles, and if I blow it, well I guess its motivation to dump my 460 in it.