FYI if you wanna do a 175 shot, you should consider the C&L intake manifold. it has bosses built into it that can be drilled for direct port nitrous injection
http://www.cnlperformance.com/05_3v.html
expensive setup but it's the best way to do it. you are assured of equal n2o\fuel mixtures.
i wish someone made a cmcv delete plate with nitrous bars....similar to a plate system but then you would only have to change 4 jets instead of 16
i talked to speedtech about this and they said they would do it but it was expensive to the point i could just buy the fogger kit.
anyway the chambers were coated with the same material but i used a heat gun to cure it since my heads were already assembled with valve seals and i didn't want to chance messing them up in the oven.
it isn't thick enough to make any change in compression it just keeps the heat in the cmbustion area instead of soaking into the piston. it's an old trick people did back in the 80's-early 90's when there was no HPC or Swain coatings. Hot Rod magazine did a dyno test way back and got 40hp on a high compression SBC motor just by coating the pistons.
If the pistons are new and clean what the heck all you need is some VHT white header paint # SP118 and an oven. there's a tech artical on VHT's website i think for the steps involved. ...found it here ya go.
Paint must be completely dry before curing
Heat to 250°F (121°C) for 30 minutes
Cool for 30 minutes
Heat to 400°F (204°C) for 30 minutes
Cool for 30 minutes
Heat to 650°F (343°C ) for 30 minutes
