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  1. #1
    The Nitrous Outlet Junkie


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    Join Date
    Apr 2010
    Name
    Troy
    Vehicle
    1994 Firebird Formula
    Location
    moore, ok (south okc)
    Posts
    3,187

    Default Question about cylinder heads and nitrous

    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?

    Sent from my SM-N950U using Tapatalk
    94 Formula; sleeper/budget build - total invested so far $5700,
    best pass on motor: 12.398 @109.4
    best pass on SPRAY:
    350, LT1, carb, LE grind cam, th400, 3800 stall, ford 8.8 w/ 4.10s


  2. #2
    Xtreme Member


    Status
    Offline
    Join Date
    Nov 2012
    Name
    Shaun
    Vehicle
    1994 camaro
    Location
    Lehigh Valley PA
    Posts
    6,074

    Default

    Quote Originally Posted by zooguy View Post
    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?

    Sent from my SM-N950U using Tapatalk
    neither. you are using a plate, plate maxes around 175 shot. thru an auto, you picked up 175 whp, 200tq. that deviation is small enough that I wouldn't think about it (variations in dyno, variations in weather, variations due to automatic trans/stall)

    Sent from my SM-N950U using Tapatalk
    2009 G8 GXP #871 - Stock and faster than my LT1

    1996 Impala SS T56 - Le2 H/C, SBE, T56 swap

    The wrench for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ P600B/ CPT Pro Race/Pro Torque 3200

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