nitrous plate too manifold

383 Buick Regal

New Member
Aug 24, 2003
I have a stock manifold on my 307, and have a nitrous kit ,that the plate doesnt mount on correctly. What is the best way to mount this without buying a new manifold for the car? thanks
Your post lacks a good description about the nitrous kit so it is hard to answer.

I am guessing that you have a square flange Holley type N2O plate & are trying to put it on a Q-jet spread bore manifold????

If so, I do not recommend it as any spacers/adapters between the manifold & N2O plate may cause mixture problems & potentially harm the engine. Nitrous is safe if used properly, but destructive when used improperly.

I'm sure you could find a used spread bore plate cheaply as they are only around $125 new.

Hope this helps.