Question about cylinder heads and nitrous

[zooguy]

I'm not sure the exact location that this post needs to be made in so if it needs to be moved please feel free.

Okay the car is back together there's a few more things on the list to finish before I start spraying but I'm getting close.

Before converting to a carburetor I put my car on the dyno and sprayed a 200 shot and there was no tuning ... all it had was open long tube headers 1.6 roller rockers and an open throttle body.

The car picked up 175hp and 202tq

I'm sure with a proper tune it would have made more but my question is was I running into a wall with how much the factory intake manifold would flow or was I running into a wall with how much the factory cylinder heads would ingest?

I know I left a lot of horsepower on the table by not doing anything to the cylinder heads they are not ported or polished all I did was take a toothbrush and some brake cleaner and cleaned out the ports so they weren't so dirty. ... I'm just curious if with this new motor is it going to be a waste trying to spray anything over a 175 shot because the cylinder heads can't suck it in?

Does anybody know the maximum amount of nitrous they can spray on stock port cylinder heads?

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