Easy ways to increase Hp

[Redemption]

seeing someone asking a way to get to 450 hp, I was curious as to some of the members ways to get an easy increase in horsepower. Minor mods, additives, etc etc.

like me, I have a factory 401. what would be some easy ways to increase my pony power?

[fuzz401]

intake - carb - cam

[Mudrat]

intake - carb - cam
Headers and dual exhaust.

Mudrat

[jeepsr4ever]

Intake and carb definately

Its a old joke that when edelbrock posts gains of 15-40hp the 40 came from the amc motor (performer intake!) The AMC V8's are set up right with exeption of exhaust(usually) and aspiration, intake and carb.....When you go to a large intake and carb you really open the that motor up and make it breath fire,...Try those first like Fuzz and Mudrat mentioned, you will be suprised

[Redemption]

which carb would you guys recommend I put on my 401? I already have the duel exaust(love the sound) so Im some of the way there to letting the 401 breathe better.

[fuzz401]

holley or edle 750 cfm

[Redemption]

say I went with the edel 750, would it be smarter to change my intake manifold with it? and if so, which would be best?

[jeepsr4ever]

intake and cam go hand in hand , what cam do you have in your 401 Redemption?

[Redemption]

to be honest, I dont know, as far as I know, everything is factory, so whatever came factory.

[fuzz401]

if its factory it is not much of a cam then

[Redemption]

lol, thats probably the case, but is the reason I am curious as to good replacement parts. especially the parts that increase horsepower.

[fuzz401]

the cam can be decided on how you plan to drive the jeep daily driver - off road only - trash it every time you get in it lol ect.

[Redemption]

its a daily driver(well, not everyday, but atleast a few times a week) but i want a beast under the hood of the javelin. I suppose high performance, but still street legal.

[fuzz401]

build it up then lol

[Redemption]

tis the plan, except I am far from a mechanic and dont know all the parts(and sometimes dont know where to get them) that I need to make it as I like it. Hense the reason I turn to you guys :iroc:

[fuzz401]

we can help you do that :t:

[pyagid]

SINCE this is a Javelin throw a nice 125 or 150

8)
http://www.jspp.nl/img/nos.jpg
8)






J/k I prefer N/A motors :lo1l:

[Redemption]

lol, NOS was a thought, but only after I get some muscle behind it. I liked the top shot system, since it requires not alot of modification. only 75-100 hp, but thats not bad.

[Lifted79CJ7]

yeah, Ilove nitrous.....wait......you guys are talking about cars, aren't you?

:shock:

Jack

[pyagid]

:(: I saw a Zex commercial today that has colored light to activate with the purge button. Add that and You will make all the ricers jealous :lo1l: 8)


J/k once again
Paul

[Redemption]

just curious as to if anyone knows of a supercharger or turbo kit that is made for a 401 or can be made for a 401 without going from scratch?

[jeepsr4ever]

Muhahaha i got pics coming soon!!

[Redemption]

Can someone tell me what the gasket that connects the headers to the exhaust pipe is called. Im not familiar with it myself.

[fuzz401]

colector gasket

[Redemption]

thanks. is it called something else, because I was looking on autozone.com and such, and cant find it under that name.

[Rocky]

Nope, that's what it's called. Problem is, you aren't going to find too many hot rod parts at Autozone. Try summitracing.com instead. You'll find plenty of them there. ..Unless you mean manifolds, rather than headers, then you'd be looking for an exhaust flange gasket.

[Redemption]

nah the exhaust flange gasket isnt shaped right. the piece I am looking for is shaped like a triangle almost with a hole at each corner.

[FSJnovice]

yes that would be the collector gasket that is what you are describing.

[Redemption]

yea, I was able to find them from JEGS. thanks for the help once again. you guys rock :lo1l:

[buzzinhalfdozen]

So how serious are you about making that javlin move?
I, with some help from my brother, built a 401 to about 475hp, that is according to desktop dyno, so it is just a rough estimate. We built it to this with only about $2000, not including the many hours that i spent on it, but that doesnt count becase it was fun. :t:

[ROBERT11]

What about adding an electric fan that's supposed to add, what, 10-15 hps? :-| :-|

[jeepsr4ever]

Robert your dead on

1. electric fan
2. electric fuel pump
3. under drive pulley
4. better air cleaner(more flow)
5. even running better gasoline
6. Hotter coil with a larger gap plug

[ROBERT11]

What is an under drive pulley? :-|

I have been told --similar subject--that putting smaller pulleys on your alternator will increase your voltage out. 111!!! I am an electronics tech and I am not so sure.

[Redemption]

im thinking of adding twin t3 turbo chargers. my only reserve is I dont know how bad it will be for the engine. any advice?

[Holeshot]

About that collector gasket, I believe that it is "SCE" that makes copper ones that will not blow out.

Also available is the Mr. Gasket Co. MRG-7174 Copperseal exhaust gasket set for $34.00. Kepps the "pss pss pss" away.

Still on exhausts, after I rebuilt my 360, I immediately started "blowing" mufflers!!! These were the good Hooker "Turbo" mufflers, with 2.5" pipes out the back. After blowing and replacing two of them, I did some looking and found that sidepipe mufflers are round and made from thicker metal than oval mufflers, so that's the stuff. Sounded STRONG as heck. The guy at the gas station said he always new it was me 'cause he could feel the ground pounding!!!

First let me say that the dogleg heads flow very well, with stock intake and exhaust, power peak should fall between 5500 and 6000 RPM. As soon as you switch to free flow exhaust and intake, power peak is gonna go up to around 7000 RPM. So, if your gonna play, play to win. None of that "I don't want to over carburate it" or "I want to build it for bottom end torque" stuff! These heads peak at 7000 RPM. If you want to build for slow speed, get an LT-1 from chevy, or one of them little motors ford is putting in them mustangs. I was thinking of converting one of them there little things into a starter motor for my AMX. :)

Anyway, EZ HP for a stocker would be to get rid of as much "parasitic" drag as possible, put on a set of BIG TUBE headers (I don't believe in "conservative" with the dogleg heads - they want to flow, let them!), an R4B or Torker, a 750 Vac Sec for auto, or an 850 DP for stick. Don't skimp on the air filter, use the tallest 14" diameter one that will fit under the hood. You may get 20HP from this one alone! Also don't forget that you have to have gas in the bowls to run good, get an electric pump, remove and cork the stock hole (BBC blockoff plate), and use a .5" line from the pump to the fuel log. You should be around 400HP now, and going deeper will net more gains. Let your wallet decide for you. While a brekerless ignition and an MSD box won't really add any HP, they will reinstate that which you are losing due to wear or misfiring due to too low of a voltage to fire the plug at high pressures, etc.

I have an otherwise stock, 4-spd 360 AMX, 3.54 posi, 26" street radials, that turned a 13.08@108 with R4B, Holley 3310 750 vac., and headers with pipes to the bumper. It would have been wasted in wheelspin, but I revved to 5500 and popped BOTH the clutch and the throttle at the same time. As soon as the front came up and the car hooked, back to the floor w/the throttle. It hooked so good that my rt traction bar broke in half and was dragging, had to bend it back and forth a few times to get it all the way off on the return road. This run would have been quicker, but the stock fuel pump & lines left it getting very soft in third gear. Fourth wasn't needed.

BIG BOOST: We all have heard about getting (maybe) 38 degrees of timing at full advance, all in by 2600 (or so) RPM. Here's something that you may be able to do this weekend without spending a dime!!! A lot of cars come from the factory with the initial timing spec at, say, 10 degrees. Then we need the distributor to give us 28. What if we limit the distributor to, say, 18, and put the rest in initially? BINGO!!! You won't believe the difference. In some cases your car may crank slow or have a harder time cranking, fix the starting system! Just make sure that you don't get into detonation (pre-ignition). It has been described as sounding like a glass of lead shot being dumped out onto a tin roof.
Higher octane gas, or throwing more in there should cure it.

In addition to HP increase, your butt will smile if you change to 3.91, 4.11, or 4.56 gears. Then you can use tall tires for road trips and shorter stickey Mickey's for raising kane. BIG boost in accel Geez!!!

BTW: The 401 should have .458"/.458" lift at the valve, and 296 IN and 303 EX duration, seat to seat. An EASY bolt on would be the 1.7~1 rockers from a smallblock Ford, for .1 more percent lift, and adding more to every other cam spec. While you're in there, use your compression guage adapter to hold your valves shut at power stroke TDC while you put new valve springs on. Get the strongest springs that fit w/o machine work. That alone should add 500~1000 RPMs, and with the RPMs come HP.

...enuff 4 now....bye

[jeepsr4ever]

:t: great advice holeshot! I will add that if you can get air into that air cleaner that isnt coming from the engine compartment you will be better off, a eighties 302 ho air cleaner will adapt to the vents (if you have them on both sides) I second that gear ratio and i personally love the R4B...poor little LT1

[Mudrat]

So much good info :lo1l: - - - so little $$$ :smile:

Mudrat

[jeepsr4ever]

i know :(: #-o :!: :-| .............................. :razz:























:shock:

[Holeshot]

Rite on, I was getting a lil short breath after all that typing!

Rule of thumb: 1% more HP for every 10 degrees of cooling the intake air (according to Smokey Yunnuck, his book is under my pillow, with my .45). :lo1l:

So, a 500HP motor will be 550HP if you can lower the intake air by 100 degrees.

I've wondered if a guy could set up an A/C system to chill the intake charge, maybe use a vacuum solenoid to cut off the compressor when the pedal goes down. And, maybe, use one of those 2800CFM fans to blow the frigid-air into the carb...that fan may even fit in my cowl hood's air cleaner hole!

[Holeshot]

Oh, I'm sorry, you said easy, you didn't say cheap...
(since we are now driving "Mopars", couldn't one of these be considered a Mopar engine)


http://www.aircraftenginedesign.com/pictures/V2500.gif

[jeepsr4ever]

now that is a good one......heres one.I took my factory air pump and set it up with a selenoid and when my pedal got to a certain point it would charge the carb with compressed air.........was awesome for a while.......till i melted a piston :shock:

[Holeshot]

ooops...maybe a NOS fuel solenoid and nozzle...

[Holeshot]

I just found this gov DOD liquidation site...gas turbines, solenoids, and everything our tax dollars could buy!!

http://www.govliquidation.com/salescalendar/index.html

WOW!!! a $41,822 AM General (the AM plant is just a few miles from home) M35A2 duece-and-a-half with 7,272 miles, for $35

I'm gonna have to start saving my pennies!!!

OK, here's a gas turbine with shaft drive for $35 starting bid..
(there's a bunch of these for sale)

http://web.govliquidation.com/auction/view?auctionId=326423&convertTo=USD

Pallet loads of tools, machining fixtures, jet engines, electronic, computers, etc..

[Holeshot]

...oh, and ya know them parachutes that all the old war movies show the GIs burying?...WE paid $14,013 ea. for the mains and $3,725 ea. for the reserves!!!!

[Mudrat]

How about 92,000 pounds of aluminum (http://www.govliquidation.com/list/e1001) even a bridge!!

How about some WWII era Mess Kits (http://web.govliquidation.com/auction/view?id=320328)

All sorts of stuff :?

[Holeshot]

http://www.fourforty.com/turbine/turbinelogo3.gif

Here's a diagram of the Mopar turbine:
http://us1.webpublications.com.au/static/images/articles/i7/0764_8mg.jpg

http://www.allpar.com/mopar/images/turbines.jpg

Where's da spark plugs???
http://www.river-road.net/oldcars/petersen/50dreams/d002.jpg

Rather looks like a '63 Rambler!
http://www.river-road.net/oldcars/petersen/50dreams/d001.jpg

http://www.familycar.com/Classics/images/ChryslerTurboCar.jpg

Mopar pitch flyer on the benefits of the gas turbine:(resizeable image)
http://www.lhmopars.com/MOPAR_Ads/Turbine_Flyer_Inside.jpg

Mopar advertisement for the turbine:(resizeable image)
http://www.home.eznet.net/~heiny/cars/pix/turb1.jpg

[ROBERT11]

After all this HP talk I can finally justify to myself, removing that fan belt for my ac, pos hasn't worked since I bought the truck.

[jeepsr4ever]

:mrgreen:

[Redemption]

well someone mentioned colder air helps the hp, but what about cooling the fuel. I was flipping through a JEGS catalog I have, and I saw something that was like an intercooler for fuel. will that help the engine, cooler fuel?