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How much more pwr will a hotter cam shaft give me? #1672398 09/16/14 07:59 PM 09/16/14 07:59 PM
Joined: Oct 2009 Posts: 1,185 Nanaimo, BC N NOrrTH OP super stock
NOrrTH OP super stock N Joined: Oct 2009 Posts: 1,185 Nanaimo, BC	Eddy 800 AVS CH4B (to fit under the Air Grabber) 30 over 440, 10:1 Stealth heads Comp Cam 21-223-4 .477 268 Dur TTi 1 7/8 into 2.5" stock torque converter 3:55 It goes good, lots of torque, but doesn't set the world on fire with approximately 450hp. It spins the wheels easy so I don't think a high stall converter will make it pull harder...unless I'm mistaken. I'm limited to the intake manifold due to height restriction with the Air Grabber (gotta keep the motor stock looking) So, how much more power could I get with a hotter cam? More than 50hp? If not I'm not going to bother. Thanks '71 GTX N96 auto 3:55 '74 Challenger 440+6 4spd 4:10 '71 Duster 340 auto 4:10

Re: How much more pwr will a hotter cam shaft give me? [Re: NOrrTH] #1672399 09/16/14 11:12 PM 09/16/14 11:12 PM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	Your current intake will hold the HP back from what it could be. You could get 50 HP with a hotter cam, but it would be Worthless with your stock vert. You would have no power below 4000 RPM. You cant go much bigger on the cam without changing the vert. Define your ability to spin? Can you break them loose @ 40 MPH? Or just break them loose from a near stop and then spin them at will. Once they are broke loose you don't need much power to spin them off the line. Breaking them loose at a rolling MPH is different.

Re: How much more pwr will a hotter cam shaft give me? [Re: NOrrTH] #1672400 09/16/14 11:14 PM 09/16/14 11:14 PM
Joined: Mar 2005 Posts: 3,147 Central NC gch master
gch master Joined: Mar 2005 Posts: 3,147 Central NC	Leave it alone.Doubt you will find 50hp in any cam.Look at other areas such as exhaust,ignition,or porting the heads for extra power. A stall converter will help it accelerate a lot quicker provided you have traction.

Re: How much more pwr will a hotter cam shaft give me? [Re: gch] #1672401 09/16/14 11:35 PM 09/16/14 11:35 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	It sounds like you have a strong well matched setup as is. More cam will will give it more top end and more "personality" (rough idle, fuel smell at idle, less lower end torque). Without other changes, as posted above, maybe not more performance. Suggest you enjoy as is unless you want to make a number of other changes besides cam.

Re: How much more pwr will a hotter cam shaft give me? [Re: NOrrTH] #1672402 09/17/14 12:01 AM 09/17/14 12:01 AM
Joined: Jan 2003 Posts: 15,976 Chilliwack B.C. Canada R RUNCHARGER I Live Here
RUNCHARGER I Live Here R Joined: Jan 2003 Posts: 15,976 Chilliwack B.C. Canada	A good torque convertor will help way more and not be a PITA. Sheldon

Re: How much more pwr will a hotter cam shaft give me? [Re: NOrrTH] #1672403 09/17/14 12:16 AM 09/17/14 12:16 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	OT I'd suggest dialing in the A/F ratio and dist subsystems live every 24 hour block of time like it's your last day on earth

Re: How much more pwr will a hotter cam shaft give me? [Re: RapidRobert] #1672404 09/17/14 02:03 AM 09/17/14 02:03 AM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	50 HP from just a cam swap is possible, but it will cost you. A solid roller setup will take a $1500 bite out of your wallet but will gain you that 50 HP. An alternative is a bigger, nice flat tappet hydraulic and a switch to a Holley Street Dominator intake. They are fairly low profile but deliver great performance. As mentioned, get the Air/Fuel in tune along with a good ignition system and you'll easily gain 50 HP. One final option: Axle gearing. A switch to a 3.91 or 4.10 will make it feel like you gained HP but the tradeoff is a mpg loss.

Re: How much more pwr will a hotter cam shaft give me? [Re: NOrrTH] #1672405 09/17/14 01:29 PM 09/17/14 01:29 PM
Joined: Aug 2006 Posts: 610 long time lurker, short time p... P PorkyPig mopar
PorkyPig mopar P Joined: Aug 2006 Posts: 610 long time lurker, short time p...	Cam swap will get you 10-15 hp. Fifty hp from a cam swap is a pipe dream, unless something else about the present combination is just totally screwed up. No cam no the planet is going to get you 50 hp with what you have now. Switching to a higher stall converter is only an improvement if your car doesn't respond by just spinning the tires more, rather than actually accelerating faster. If you don't have the grip to handle the higher launch rpm, it can slow down. Porting heads could get you 30-50 hp, depending on what's done to make the work match the rest of your combination. That gets my vote.

Re: How much more pwr will a hotter cam shaft give me? [Re: PorkyPig] #1672406 09/17/14 04:12 PM 09/17/14 04:12 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Porting and keep your other stuff the same. Modern Cylinder Head has a good program for Stealth heads. Also spend some time on a chassis dyno and get the tuneup right. There may actually be 50hp in the tuneup. R.

Re: How much more pwr will a hotter cam shaft give me? [Re: dogdays] #1672407 09/17/14 04:46 PM 09/17/14 04:46 PM
Joined: Oct 2009 Posts: 1,185 Nanaimo, BC N NOrrTH OP super stock
NOrrTH OP super stock N Joined: Oct 2009 Posts: 1,185 Nanaimo, BC	Fantastic information. Thanks guys! '71 GTX N96 auto 3:55 '74 Challenger 440+6 4spd 4:10 '71 Duster 340 auto 4:10

Re: How much more pwr will a hotter cam shaft give me? [Re: NOrrTH] #1672408 09/17/14 06:26 PM 09/17/14 06:26 PM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	While I don't think the intake is holding you back as much the convert and gear are. Anything biger would require a stall and a taller gear otherwise it might be a pig out of the hole. You could add 1.6 roller rockers that would add some lift. A 4 hole 1/2" spacer might help as well if you have room. [IMG]http://i66.tinypic.com/pui5j.jpg[/IMG] Coming soon!!!!

Re: How much more pwr will a hotter cam shaft give me? [Re: PorkyPig] #1672409 09/17/14 11:05 PM 09/17/14 11:05 PM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	"Cam swap will get you 10-15 hp. Fifty hp from a cam swap is a pipe dream" Porky has a right to his opinion, but....... The only people that think like him are those that run mild cams and never exceed 4500 rpms. Thats fine for them. Look at any magazine article where they take a stock rebuilt 383, 440 or even a 340 and look at the results. The biggest gains are almost always after they switch to a bigger cam. Pathetic results like a 10-15 HP gain from a cam swap would be a huge waste of time for the expense. You'd get 10 HP just by switching to 0w20 synthetic oil.

Re: How much more pwr will a hotter cam shaft give me? [Re: Kern Dog] #1672410 09/18/14 12:41 AM 09/18/14 12:41 AM
Joined: Aug 2006 Posts: 610 long time lurker, short time p... P PorkyPig mopar
PorkyPig mopar P Joined: Aug 2006 Posts: 610 long time lurker, short time p...	Quote: "Cam swap will get you 10-15 hp. Fifty hp from a cam swap is a pipe dream" Porky has a right to his opinion, but....... The only people that think like him are those that run mild cams and never exceed 4500 rpms. Thats fine for them. Please, tell me how fast your street car is, how big your cam is, and what RPM you shift and turn throgh the traps. I suspect you have no idea what I think or how I build my car.

Re: How much more pwr will a hotter cam shaft give me? [Re: NOrrTH] #1672411 09/18/14 12:57 AM 09/18/14 12:57 AM
Joined: Feb 2005 Posts: 4,316 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,316 Prospect, PA	How would you know? What evidence do you have that you have 450 hp now? I'm with Porky and dogday. You could probably find 30 hp in the tune

Re: How much more pwr will a hotter cam shaft give me? [Re: BSB67] #1672412 09/18/14 10:00 AM 09/18/14 10:00 AM
Joined: Jan 2003 Posts: 3,103 Phila Pa S scatpacktom master
scatpacktom master S Joined: Jan 2003 Posts: 3,103 Phila Pa	I understand why you run the ch4b but it really isn't a good manifold. They are very low with sharp corners. If you want to close in on that 50hp a fine tuned six pack will get you part of the way there. You wouldn't have Air Grabber issues with it.

Re: How much more pwr will a hotter cam shaft give me? [Re: scatpacktom] #1672413 09/18/14 12:37 PM 09/18/14 12:37 PM
Joined: Jun 2006 Posts: 5,163 CT GTX MATT master
GTX MATT master Joined: Jun 2006 Posts: 5,163 CT	A 50 horsepower gain would take some better intake setup and at least 245 degrees of duration, I.E. a big jump in cam size and 10-12 inches of idle vacuum. CNC ported heads will probably net you half of that if you prefer to not give up any street manners. I would agree that I don't think you will find 50 usable horsepower out of any cam without other changes. Do you want more horsepower or do you want the car to go faster? As the others said there is probably alot in your tune up. Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

Re: How much more pwr will a hotter cam shaft give me? DELETED [Re: RUNCHARGER] #1672414 09/18/14 01:07 PM 09/18/14 01:07 PM
Joined: Sep 2004 Posts: 22,873 Chicken coop dustergirl340 Chicken Little
dustergirl340 Chicken Little Joined: Sep 2004 Posts: 22,873 Chicken coop	Quote: A good torque convertor will help way more and not be a PITA. Sheldon Agreed...people always seem to overlook the converter. Good ones aren't cheap, but they are worth it in an automatic car.

Re: How much more pwr will a hotter cam shaft give me? [Re: dustergirl340] #1672415 09/18/14 02:33 PM 09/18/14 02:33 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	FD, of course you can get 50 hp from a cam swap from factory stocker to better cam, but he's already done that. He's running a Comp XE268, which has 224/230 @ 50 with 110LSA. This is a proven street cam which should be good for 1hp/cubic inch with decent heads. Gaining ANOTHER 50hp from a cam swap will put him out of the streetable range, PP is right. Power band will start at 3500rpm, the car will be an absolute dog around town. R.

Re: How much more pwr will a hotter cam shaft give me? [Re: dogdays] #1672416 09/18/14 06:07 PM 09/18/14 06:07 PM
Joined: Oct 2009 Posts: 1,185 Nanaimo, BC N NOrrTH OP super stock
NOrrTH OP super stock N Joined: Oct 2009 Posts: 1,185 Nanaimo, BC	The machine shop that built the motor said they designed it to be 1hp/ci and be a great torquey street motor to work with my set up (stock vert, 3.55s) I believe they achieved that. However, I wanted something more radical and said how about a stroker? They said you don't need that, don't want to do that to your numbers motor and you should be happy with a torquey 440. I should be happy but I'd like another 100hp plus at least the torque I already have. It sounds like I'd have to go to heroic efforts to do that though (512ci, convert and 3.91's). I want it to pull HARD. Right now it just pulls quite good. The idea of the six pack has been on my mind. That, a cam, vert and 3.91s should make the car snapier '71 GTX N96 auto 3:55 '74 Challenger 440+6 4spd 4:10 '71 Duster 340 auto 4:10

Re: How much more pwr will a hotter cam shaft give me? [Re: NOrrTH] #1672417 09/19/14 09:14 AM 09/19/14 09:14 AM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	Quote: The machine shop that built the motor said they designed it to be 1hp/ci and be a great torquey street motor to work with my set up (stock vert, 3.55s) I believe they achieved that. However, I wanted something more radical and said how about a stroker? They said you don't need that, don't want to do that to your numbers motor and you should be happy with a torquey 440. I should be happy but I'd like another 100hp plus at least the torque I already have. It sounds like I'd have to go to heroic efforts to do that though (512ci, convert and 3.91's). I want it to pull HARD. Right now it just pulls quite good. The idea of the six pack has been on my mind. That, a cam, vert and 3.91s should make the car snapier I'm running a Turbo action 3800 and 3.91's w/ my six pack. Swaping converters, gears and intake/carbs isn't an easy or quick task. Not to mention cost. I have less motor and I can tell you this car is not a ton of fun on the street. Runs and drives nice but it explodes the tires (even the ET Pros) without much effort. 8274679-4402.jpg (44 downloads)

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