I had my new motor built to handle a 200 shot of nitrous. Any ideas on the perfect setup for it? Im just doing some research now. Motor is a forged 355 using the Holley HP ecm. I want a dry system so I need to calculate what I need for fuel injector size to run the nitrous. Im using ford 24lbs now. Also would you run a throttle plate or direct injection into the intake system? Or just a nozzle into the intake tube?

 

Based on what my motor looked like running a wet 150 shot thru a single nozzle upstream of the throttlebody, if you wanna spray 200, i would do direct port into runners. Distribution was an issue on my hsr

size fueling on a richer higher bsfc value like a boosted car for the total power you expect to make.
injector calcs using .48-.50 is common for na. .6-.65 for heavy boosted will give you margin on gasolines

 

direct port would be best, but you might be able to get some crossbars into the plenum too.

 

Im def thinking direct port is the way to go. I think carb plates may fit between the upper plenum and lower intake on the HSR but im not sure.