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how much HP do these usually add?
i was just wondering if you could tell me how much HP gain i can expect from these add ons?
Demon 650 carb Hooker comp headers with 1 5/8 and 3" collector MSD ignition dist( i know not much but is there any increase) true dual flowmaster exhaust |
Hard to say since you didn't post what engine it has or what it has inside it.
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Originally Posted by Y2K
(Post 344768)
Hard to say since you didn't post what engine it has or what it has inside it.
# Seasoned GM 4-bolt Main Short Block # 1-piece Rear Main Seal # Patriot Performance Freedom Series Straight Plug 190cc Heads # 2.02" Intake/1.60" Exhaust Stainless Valves # Scat Crank and I-Beam Connecting Rods # Clevite Bearings # Hypereutectic Flat Top Pistons # 10.4:1 Compression Ratio # Fel-Pro Head Gaskets # New Head Bolts and Hardened Washers # MSD Street Fire HEI Distributor with 50,000 Volt Coil # Aluminum High Volume Water Pump # Edelbrock Air-Gap Intake (port matched to heads) # Double Roller Timing Chain # Polished Aluminum Valve Covers w/breathers # Steel Roller Tip Rockers # Hardened Pushrods # Howards Hydraulic Roller Camshaft # Cam Specs: 230/230 .480"/.480" 110LSA # Mellings Oil Pump i was wondering if i could get to 480-500HP with the exhaust, ignition and induction upgrades that i posted |
Do you already have headers? if not that will make a big difference but just changing to different headers isn't going to make huge gains.
The Demon carb may be a bit more responsive but I can't see a big power gain over the Edlebrock. You might look at a little bigger carb like a 750,looks like you have enough motor to handle it and then you'll see some gains if it's set up right. You have an MSD dizzy listed in your specs already so what is the change there? Whatever it is I don't see any gain unless you are replacing a stock unit and then only modest gains mostly attained through higher rpms available and a little better advance curve. |
well i haven't gotten the 383 yet but im going too..it dyno'd at 450 HP but would it gain any more HP when i add the headers, demon carb and exhaust to the 383 over the dyno'd HP?
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Well I'm going to assume it had headers on it when it was on the Dyno so I'm not seeing a real gain over what is spec'd out there.
Certainly not the 30-50 hp you're looking for. |
Originally Posted by Y2K
(Post 344964)
Well I'm going to assume it had headers on it when it was on the Dyno so I'm not seeing a real gain over what is spec'd out there.
Certainly not the 30-50 hp you're looking for. |
other than a turbo, or supercharger there is nothing that can be added to a motor to give you HP.
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Originally Posted by jason7504
(Post 344967)
are there any bolt on's that could give me the 30-50hp gain?
Originally Posted by djs383
(Post 345017)
other than a turbo, or supercharger there is nothing that can be added to a motor to give you HP.
You might need to go with a more aggressive racing cam and a different intake and bigger carb or more than one carb but you start pushing boundries if you want it to be a daily driver rather than a hot rod toy. Look at Camaro69's car with the dual carb tunnelram set up,something like that with the right cam can probably get you there or close but it's not going to be a good daily driver and it'll eat a lot of gas. All the power will be top end high rpm making street driveability a problem at least in the context of a good daily driver. Why are you looking for that much power would be my question? 450hp in a street driven car is quite a bit,if you haven't driven a car with that much power before you might want to just give it a whirl lol. Looking for really big hp in a reliable street friendly package is expensive,you're looking at turbo or supercharging or a big monster big block. One other option for a quick burst of extra power is a NOS kit,that will be your best bang for the buck getting the numbers you are seeking IMHO and when not in use your car would still be streetable. |
Originally Posted by Y2K
(Post 345098)
Well that depends on what kind of car you want it to be,as in how streetable VS mostly a hotrod.
I wouldn't say that but as I said above it depends. You might need to go with a more aggressive racing cam and a different intake and bigger carb or more than one carb but you start pushing boundries if you want it to be a daily driver rather than a hot rod toy. Look at Camaro69's car with the dual carb tunnelram set up,something like that with the right cam can probably get you there or close but it's not going to be a good daily driver and it'll eat a lot of gas. All the power will be top end high rpm making street driveability a problem at least in the context of a good daily driver. Why are you looking for that much power would be my question? 450hp in a street driven car is quite a bit,if you haven't driven a car with that much power before you might want to just give it a whirl lol. Looking for really big hp in a reliable street friendly package is expensive,you're looking at turbo or supercharging or a big monster big block. One other option for a quick burst of extra power is a NOS kit,that will be your best bang for the buck getting the numbers you are seeking IMHO and when not in use your car would still be streetable. yeah i was thinking about getting a supercharger but there like 3000 for a 100-150hp gain..so i was also thinking about NOS..like a 100-125 shot..what would i have to do besides getting a different intake manifold so i dont blow my engine? |
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