Thread: Top Shot Nitrous

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Has anyone used a Top Shot Nitrous System?
I have very limited hood clearance and a plate system will not work unless I mill the intake to carb flange and a direct port system seems like a lot of work for the little that I would use it.
Question: How much room do I need from carb top to air filter bottom for a TS system to work??

Thanks in advance

Terry

I would run fogger nozzles, just drill and tap your intake for the fogger nozzles. 1 in each intake runner.

Originally Posted by Matt167

I would run fogger nozzles, just drill and tap your intake for the fogger nozzles. 1 in each intake runner.

If he does not have a strong bottom end a Fogger will burn the engine down very quickly.

Originally Posted by erik erikson

If he does not have a strong bottom end a Fogger will burn the engine down very quickly.

Top shot 200 dollars ,I think.Fogger system,1000 dollars for a kit ,and about 500 dollars for a professional to install. And you need a engine to support the fogger.I see your thinking though,as far as the clearence underhood.

The engine has forged pistons and a forged crank but is a 2 bolt main 351W now at 418 CI!
I would use the nitrous so infrequently is why I was thinking top shot for ease of installation, to save a few bucks and the hood clearance issue! I do not need or want a 400 HP application, just a 75 - 100 HP shot now and then!!

I know some people in the smaller engine world ( carb'd 4 and Inline 6cyl ) put 1 or 2 fogger nozzles on a log intake and use it just as a standard N20 system, because in most cases, there is no plate to fit the carb base. my thinking is 2 nozzles could be drilled and tapped for right into where the carb goes ( in the common plenum, before it goes into the individual runners ), they would have to be drilled at an angle, but 1 in each side of the plenum ( assuming a dual plain intake ) would work just as good as a plate system or the top shot system. it could go togther fairly cheaply, 2 fogger nozzles, a couple solonoids, lines, preassure gauge and a bottle.

Originally Posted by Terry Stapley

The engine has forged pistons and a forged crank but is a 2 bolt main 351W now at 418 CI!
I would use the nitrous so infrequently is why I was thinking top shot for ease of installation, to save a few bucks and the hood clearance issue! I do not need or want a 400 HP application, just a 75 - 100 HP shot now and then!!

Then it sounds like the Top Shot is what the DR. ordered.

The idea 2 posts above about the 2 fogger nozzles in the plenum sounds interesting. I had not thought of that way to install a system.

The only question that remains is will a top shot fit in my aircleaner! That is the question that i need answered if anyone has a top shot system! How much space do I need between the top of the carb and the bottom of the aircleaner lid! There are no dimensions on the Holley website!

Originally Posted by Terry Stapley

The idea 2 posts above about the 2 fogger nozzles in the plenum sounds interesting. I had not thought of that way to install a system.

The only question that remains is will a top shot fit in my aircleaner! That is the question that i need answered if anyone has a top shot system! How much space do I need between the top of the carb and the bottom of the aircleaner lid! There are no dimensions on the Holley website!

You don't really even need that. Just take a spray bar from a plate system and drill and mount it in the intake just above the plenum area an inch or so below the carb.
Yes,it will be much cheaper also.

The other good thing about the top notch is that it can be hidden real good .

Thanks for the advise all!! Eric, I have considered that and wondered if it would work!! Great thought!!
Has anybody just installed the spray bar into the intake plenum??