dodgetkboy78
EDELBROCK HEADS SUCK!
Were the ONLY ones Rumble............ The ONLY ones..... Everyone else reads into the HYPE of the other mufflers, like noflowmaster..........
Aerochambers FLOW exhaust! And last forever.
318 Sleeper build ideas
- Thread starter Moose
- Start date
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Were the ONLY ones Rumble............ The ONLY ones..... Everyone else reads into the HYPE of the other mufflers, like noflowmaster..........
Aerochambers FLOW exhaust! And last forever.
Ok ok so yea I did some reading up on the Aero chamber and listen to some sound clips. I like them alot actully. The reason for flowmaster was I have them on my truck and I love the sound. But heres the plan so far for the exhaust Im going to do duel aero chambers with no cats. Itll sound nice :snakeman: :toothy10:
This....except run tailpipes on it. Lack of tailpipes can actually kill some bottom end torque. the tailpipes will also quieten it down some more. Other than that......Justin has nailed the hell outta it. He always does.
Dartnut
Don't hate me because i'm beautiful
I like 318's myself. Durable, buildable, plentiful. I have one in my Duster, nothing special but runs good. My nephew's 392 (I put the info on it here somewhere bout' a month ago) runs damn good. He has surprised quite a few "hot" street cars here at the Pig Stand (that's where the hot cars hang out).
dodgetkboy78
EDELBROCK HEADS SUCK!
I disagree with the tailpipes and torque comment, from my experience, anything after the muffler is restrictive, if you want to gain torque (LOL) from backpressure, you had better do it BEFORE or AT the mufflers, closer the the headers the betters. (Think stepped headers, etc)
dodgetkboy78
EDELBROCK HEADS SUCK!
Built a 400M (4"x4", the magic numbers) for a 78 Tbird. Used headers, and the biggest 3" truck muffler I could stuff in it, and a 3" tailpipe hidden the best I could. Cam was a 268 comp (not much for the small lifter ferd really) heads were ported, Xcelerator manifold, higher comp pistons, and TONS of oiling system mods stock converter in a FMX............
Idle was real close to the "sick lethargic" M motor sound, would rev til 5500, snap your head back in second, and sounded like WOOOOSSSSSHHHHHHHHHH when stepped on.... Car was faded green with rust holes, white top, and mismatched red interrior...... Ran low 13's
SLEEPER! LOL
To add, the BEST way to get the sleeper effect, is to run single exhaust. a 3" pipe will flow the same as a dual 2 1/4" system, and sound STOCK and look stock (ish)
EL5DEMON340
Well-Known Member
To me saying a sleeper 318 makes no sense, Unless your going to keep it a 2bbl like 90% were. then i would stroke the 318 to 390, find a good 360 2bbl manifold and port it, and open it to the largest best flowing 2bbl you can find, throw some good flowing magnum exhaust manifolds on it, some good 360 j heads, stock covers and a two bbl air cleaner with holes drilled on the bottom, then you would have a real sleeper. But if you pop the hood and it has a aluminum intake, holley, chrome cleaner and headers, who cares if you say its a 318, its no longer a 318 sleeper!!! and BTW everyone is wise to strokers anyway so it really has to look the part
It's a build dependent thing. With the mildness of the engine and a target of sleeper, the tail pipes IMO would be a bennifit to the build and retain the target goal of quite/sleeper.
If the engine becomes a powerful mill, then tail pipes can be dropped. The lack of them is a HP adder over any other thought/target.
If tail pipes are to be dropped on this size mill, then I would run 2-1/4 with a HP max of 300-ish area. After that, a 2-1/2 pipe. Of course this is more so targeted as a street stripper of light drag car.
Agreed on both accounts.
Justin is doin real good.
stroked 340
Banned
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Get it right MORON..its called talking ****...
1wild&crazyguy
Banned
old school way of finding the right place for the muffler-shoe polish line on collector pipe back about 5 ft, run the car through the hoops then look to see where the polish has burned off, right before it ain't burn off is where you'd put yer muffler.
/6 Matt
30 Degrees Crooked
Here's an Idea
Go get a slant six and supe it up. Most people think they're boat anchors, so no matter how it looks or sounds, it's still a sleeper.
Just kidding:toothy10:
Go get a slant six and supe it up. Most people think they're boat anchors, so no matter how it looks or sounds, it's still a sleeper.
Just kidding:toothy10:
1wild&crazyguy
Banned
dodgetkboy78
EDELBROCK HEADS SUCK!
LOL, I do that with tire chalk....................
I guess I'm "old school"...........
dodgetkboy78
EDELBROCK HEADS SUCK!
Not when you do it.................:thebirdm:
dodgetkboy78
EDELBROCK HEADS SUCK!
I think the sleeper thing is idling smooth..........
A smooth idle, is a quiet idle, is a quiet motor...............
A smooth idling motor can still run up to 5500rpm heads and cam design providing............
A sleeper can run 13's, and a 390 inch motor, tuned and running right, could do that, after all, 13's is cookin' for anything you find on your drive to Wallyworld!
Anyone considered Rhoads lifters???
A smooth idle, is a quiet idle, is a quiet motor...............
A smooth idling motor can still run up to 5500rpm heads and cam design providing............
A sleeper can run 13's, and a 390 inch motor, tuned and running right, could do that, after all, 13's is cookin' for anything you find on your drive to Wallyworld!
Anyone considered Rhoads lifters???
wigsplitter74
The Mopar Kid
How much "sleeper" do you want? As a street racer i can tell you all hustle is lost as soon as it fires or you win. Now how do you feel about sprayin a junk yard motor? it's alot of fun my buddies 318 with stock bottom end went low 13's now spray it to mid 11's and you can scare people, oh hidden foggers are the best sleeper tool. You can do AWESOME things but general rule wider centerline and more exhaust duration doesn't hurt to polish exhaust ports and even keep it a hyd flat tappet if you want they can be neat, but in all truth who gives what mufflers you run? if your afraid of spray and a radical sounding motor i guess your not gonna be that fast and stay away from the other sleepers around because you know they got it.
my.02
my.02
I thought about it, but thats going to be for a later engine :snakeman:
shadowdog
Well-Known Member
find an early 318hp . add a pair of 70-71 360 2 bbl truck heads and an LD4B intake...great combo lots of power and can get decent mpg as well
dodgetkboy78
EDELBROCK HEADS SUCK!
They didn't put 360's in trucks until 72.
I have a 318 laying around and I was thinking about building it up to replace the 360 in my dart. I figured a 390 stroker kit from hughes and an xe274 cam with some RHS heads would give it some lope... but wouldn't seem too scary to the unsuspecting and unawares peoples :snakeman:
390 stroker with say 10:1 comp, and XE274 cam with some RHS LA-X heads.. The extra cubes and slightly higher compression should mellow that cam out alot, if i'm not mistaken.
Monster torque and gobbbbs of top end. For about 3k that engine would be gnarly.
390 stroker with say 10:1 comp, and XE274 cam with some RHS LA-X heads.. The extra cubes and slightly higher compression should mellow that cam out alot, if i'm not mistaken.
Monster torque and gobbbbs of top end. For about 3k that engine would be gnarly.
dustoff440
Well-Known Member
Thrush welded sound like flowmasters for less than half the price. Call comp cams and ask for advice on a cam. Last time I called them they said they would grind a custom cam for me for the same price as an off the shelf one. They will take all the info on your package and make a recommendation.These guys help people make cam choices THOUSANDS of times a year and can make a suggestions based on years of experience, not bench racing but verified dyno proven experience over a period of years. If you have a subject matter expert at your disposal why wouldn't you use them??? This is not to say that members are not offering you great advice, the problem is that everyone has a different opinion and comp will make a recommendation for you based on vehicle weight, converter stall speed, type of heads and valve size, rear axle ratio, and about 15 other variables. Good luck!!
1wild&crazyguy
Banned
when cam is 'mellowed out' with cid... the top end go's away.:read2:
dch-65
Active Member
Moose I don't know if this is much help but I'm in the process of trying to do exactly the same thing. Putting a 318 stroked to 390 in a 77aspenSE. We are about three good days away from finishing the install. The engine is complete and the dyno test results are listed under "restoration" thread for 77aspenSE. If you interested in the details of the motor let me know .
Dave
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