I Would Like To Put A Nitrous Setup On My 71 Grabber.any Advice On What System I Should Use? The Engine Just Had A Rebuild. It's A 302 Bored .60 Over With A Summit Cam And Kit(its The Biggest One You Can Run Without A Stall Converter),double Roller Timing Chain And Gears,arp Rod Bolts,headman Headders,21/2 Inch Exhaust With H-pipe,weiand Stealth Intake With A Street Avenger 650. Its A C-4 With A Shift Kit And A 3:55 Rear Gear(thanks Earl).i'm Thinking Somewhere Along The Lines Of A 75 To 125 Hp Shot. Would Ther Be Any Major Changes I Would Have To Make? Thanks Alot ........pete
Dudleygray, Premium bearings (clevite 77 or aluminum babbit), forged pistons, and shot peened rods would be an excellent start. 100 hp nitrous is a reasonable place to begin and if you can get the throttled system it is less abusive to the engine. If the engine hasn't been completely ballanced you need to do that before anything else. An upgraded ignition system will be helpful and a three row radiator core is good too. PaulS
I'm running a 150 hp shot and using a Jacobs Nitrous MasterMind. Excellent controller that can save your engine if something goes wrong. Noticed your bore is .060 over, that makes those cylinder walls mighty thin to go pumping in nitrous.