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So my 78 is sitting at the dyno shop right now being dyno tuned and I'm already preparing myself for being unhappy with the total HP, especially at my lovely 5,280 elevation here in Denver. I've got a high compression 350, so a blower is pretty much out, but the motor was built with nitrous in mind and I'm pretty darn sure I'm gonna have to throw a bottle in to put a smile back on my face.
Wondering who has Nitrous running in their C3 as I'd like to see pictures of where/how you mounted everything. I've searched a bunch of past threads, but all the ones I've found the photo links are dead now as they're older posts. Does anyone have photos they can share of their setup in a C3?
I have a blower and nos and it gives me a smile all the time nos is only used at wot and I don't need it very often sorry about your high compression ...lol
I have a blower and nos and it gives me a smile all the time nos is only used at wot and I don't need it very often sorry about your high compression ...lol
Yeah, if I had it all to do over again I wouldve definitely built lower compression so I could run a blower. Maybe when I blow this brand new motor lol.
I have a NOS big shot system on my 13.5 :1 434 small block and use the largest jets supplied.��
Goddamn, 13.5:1?!?! I thought my 11:1 was high. Guessing its not a street car though right? Are you running 100 octane in it all the time? Any pictures of the system? Any issues running it or was it relatively simple to setup?
Goddamn, 13.5:1?!?! I thought my 11:1 was high. Guessing its not a street car though right? Are you running 100 octane in it all the time? Any pictures of the system? Any issues running it or was it relatively simple to setup?
Yes, not a street car, big cam, old school, simple to setup compared to turbo / blower. Just your normal sb low budget race engine.
Yes, not a street car, big cam, old school, simple to setup compared to turbo / blower. Just your normal sb low budget race engine.
Gotcha. Mines a very hefty cam as well and 11:1 compression... Still streetable but old school. Obviously could throw a blower on it but would not really be street worthy at that point as I dont think I could get away with pump gas. Hoping I can make a small shot of nitrous work with pump fuel (maybe with some octane booster) and pump up the shot and run some race fuel or blend at the track.
Gotcha. Mines a very hefty cam as well and 11:1 compression... Still streetable but old school. Obviously could throw a blower on it but would not really be street worthy at that point as I dont think I could get away with pump gas. Hoping I can make a small shot of nitrous work with pump fuel (maybe with some octane booster) and pump up the shot and run some race fuel or blend at the track.
Sorry, but I would not try to give advice when using nitrous, would be like the blind leading the blind.
Other (more knowledgeable) 😉people will soon chip in, I'm sure 😉
[/YT]ut, but the motor was built with nitrous in mind and I'm pretty darn sure I'm gonna have to throw a bottle in to put a smile back on my face.
Wondering who has Nitrous running in their C3 as I'd like to see pictures of where/how you mounted everything. I've searched a bunch of past threads, but all the ones I've found the photo links are dead now as they're older posts. Does anyone have photos they can share of their setup in a C3?[/QUOTE]
Jump over to YB for nitrous info, they have the experts with running spray.
My 2cents, don't get carried away with anything over 150 shot too much drama when the pistons melt. Anything over that will be deminished returns.
Items to consider are Fuel supply, activation either throttle switch, RPM switch or Progressive controller. Either way go with a single plate system. Hood clearance will become a issue real soon....but here's my system.
Wilson PRO-FLO plate, single bar, fuel flow thru a Holley #72 Jet set at 5.5lbs to the fuel side. Fuel tank supplied fuel. You will need to pull timing on activation. Do your homework before application. A digital MSD 6 or equivalent is your friend.
So if you must...here's a pic of my pump gas nitrous motor.
over a 150 diminishing returns ? Melting pistons ?
I know plenty of guys hitting 2 stages with 400 to 600 shots and another guy with 4 stages hitting 800 on a 1750hp 768 BB .. Not sure those guys would accept that explanation
A sbc forged up , bult well would survive a 250 shot easily. In a mustang with a 355 11 to 1 b/s motor a friend runs 9.50 .. If I remember right his motor is worth about 1500 lol..
NOS is only as good as the tune . Small shots like 75 or 125 not a real big deal but large shots do need independent fuel pumps and regulators and a data logger to be effective.
Put a 125 shot on her pull 2 to 4 degrees of timing out and hammer her like a hillbilly does his woman
The OP is new to N2O, no ones starts out big. He's got a 350 so probably not a dedicated Nitrous car as are your buddies big inch race motors.
My views are from my own experience running 3 cars, on single as well as multi kits. Sure there no denying the power capability of spraying big but not out of the gate. Big motors will take big hits. Little motors not so much...
I've spent lot's of track time doing 100-400 hp hits in 50hp increments.
Light cars respond much better than our street cars. Heavy street cars are not near as responsive to more.
We don't know what kind of parts are in your 350, so start small and add as your needs increase. When you feel comfortable and the need than adjust up.... just remember nobodies buddies are going to fix your Car!
The OP is new to N2O, no ones starts out big. He's got a 350 so probably not a dedicated Nitrous car as are your buddies big inch race motors.
My views are from my own experience running 3 cars, on single as well as multi kits. Sure there no denying the power capability of spraying big but not out of the gate. Big motors will take big hits. Little motors not so much...
I've spent lot's of track time doing 100-400 hp hits in 50hp increments.
Light cars respond much better than our street cars. Heavy street cars are not near as responsive to more.
We don't know what kind of parts are in your 350, so start small and add as your needs increase. When you feel comfortable and the need than adjust up.... just remember nobodies buddies are going to fix your Car!
I appreciate you looking out, dont worry, I'm not gonna go hit 400 hp off the bat. I would be planning to start small with expectations of probably only going to 100-150 max for now. I'm guessing the engine can take it, but the rear end probably not so much just yet, so I'll be getting to that relatively soon. The motor is a fully built 355, 4 bolt main, mostly forged internals, hefty cam, 1.6 roller rockers, Trickflow Super 23 195 aluminum heads, 11:1 compression, built to go high rpms, etc so I'm guessing its fine for a 50-150 shot?
Last edited by Mcjoshin; Mar 14, 2016 at 12:55 AM.
If anybody has any suggestions for this, I pulled the trigger on the Fitech goEFi system today, so I need to do some research on what type of setup is going to work best with a throttle body type fuel injection. I'm not sure if theres nitrous kits designed specifically for TBI injection systems or if you just use a plate system like with a carb since its a similar design (that's my guess?). I did order the power adder GoEFI that allows some controls for a nitrous setup as well. I plan to call Fitech and/or Nitrous Express to discuss, but if anyone has suggestions that would be great.
Last edited by Mcjoshin; Mar 14, 2016 at 01:10 AM.
As a kid had a few friends melt down their cast Pistons but a mild kit with careful attention to jetting, timing and plug gap should deliver miles of smiles. I wish I could get my hands on the kit they use to sell in the PAW catolog for my 82 CFI corvette. Maybe one day I'll find one on eBay.
Who has nitrous on a C3??
