I've been given some nitrous gear which I'd like to try on my car someday. Is there any to tell what the HP rating of a plate is from the size and number of holes in the jets?
If my plate is more than 100 or 150 HP or so, I'd rather replace the plate and keep the solenoids and bottle.
In the worst case, the bottle was given to me full, so at least I could always use that.
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1984 Silver Z28, 383 cid long-rod SBC, ARP Bolts, 2 1/2" Cowl w/ Cold Air Induction, Performer Carburetor, Torker II Intake, Performer RPM Heads, Moderate Cam, MSD6A Ignition, Blaster2 Coil, HEI Distributor w/ Adjustable Advance, 700R4, TransGo SK, 2.73:1 Limited Slip Dana 44, Terminator Headers, Custom 3" TIG Welded Stainless Exhaust, Flowmaster Muffler, 4 Wheel Disc Brakes, Oil Cooler
If my plate is more than 100 or 150 HP or so, I'd rather replace the plate and keep the solenoids and bottle.
In the worst case, the bottle was given to me full, so at least I could always use that.

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1984 Silver Z28, 383 cid long-rod SBC, ARP Bolts, 2 1/2" Cowl w/ Cold Air Induction, Performer Carburetor, Torker II Intake, Performer RPM Heads, Moderate Cam, MSD6A Ignition, Blaster2 Coil, HEI Distributor w/ Adjustable Advance, 700R4, TransGo SK, 2.73:1 Limited Slip Dana 44, Terminator Headers, Custom 3" TIG Welded Stainless Exhaust, Flowmaster Muffler, 4 Wheel Disc Brakes, Oil Cooler
Junior Member
First of all, the jets have one hole and are placed where the hoses attach to the plate. The plate is designed to be able to produce a broad range of power by changing the jets. The selonoids are what limita system to it's top hp rating. The larger the number, say a 50-150 vs. 150-300, is the selonoid size. Cal the manufacturer to see what you have and to get an idea of it. You can get jets for almost any numberof hp between the selonoids rating.