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  #1  
Old 11-11-2000, 11:27 PM
ramtuff truk ramtuff truk is offline
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Any ideas on which intake manifold to use on a 318 with 360 heads.It has stock exhaust manifolds, single exhaust(because of state inspection laws) split into duals behind the cat,and weighs in at 3600 lbs.Just want some ideas and to here from you guys what has worked best for you.Is there anything better than the edelbrock performer intake? For now I'm using the performer 600 carb and stock cast intake w/spacer/adaptor
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  #2  
Old 11-11-2000, 11:42 PM
Dennis Jokela Dennis Jokela is offline
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I HAVE HAD GOOD LUCK WITH THE WEIAND STEALTH. IT HAS GOOD THROTTLE RESPONSE, AND WILL REV QUITE HIGH. I HAVE ALSO USED THE EDELBROCK PERFORMER ON A 318 W/318 HEADS IT HAD GREAT THROTTLE RESPONSE, BUT RUNS OUT OF STEAM EARLY, I DON'T KNOW HOW IT WILL WORK WITH THE LARGER PORT 360 HEADS. I USE A CARTER 625 CFM ON BOTH.

I HOPE THIS HELPS A LITTLE

DENNIS
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  #3  
Old 11-11-2000, 11:54 PM
djswwg djswwg is offline
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Another awsum intake is Holley's Street Dominator. Don't be fooled by the name or the 4800 rpm rating in the catalog. (I can't understand where that rating comes from !?!?) On both small and big block mopars they will pull hard thru 6000 rpm. I'd also suggest checking out MP's units.
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  #4  
Old 11-12-2000, 12:16 AM
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Leigh Leigh is offline
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LD340 is still hard to beat. Hard to find and can be pricey if the wrong person is selling it.
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  #5  
Old 11-12-2000, 01:30 AM
Hemi Mike Hemi Mike is offline
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If you run the C171 a/c compressor, your only choice other than the Performer, is the single plane Edelbrock Torker II because of the offset thermostat housing. It's probably close to the Holley street dominator in performance.

------------------
Stoplight action in a street fightin' '85 M-body 360ci. or '68 Hemi GTX 4spd.
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  #6  
Old 11-12-2000, 05:09 AM
ramtuff truk ramtuff truk is offline
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Thanks guys for all your replies.My thoughts were that a single plane intake would kill too much bottom end on such a heavy car.So mentally, I was leaning towards The dual plane intake idea.I wouldn't want any less low end than is there now.
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  #7  
Old 11-12-2000, 11:09 PM
JOHN SHERRED JOHN SHERRED is offline
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somthing similar to the performer would be good for your aplication or a cast iron 340 intake would be good then you could eliminate the adapter plate

stay away from the hi-performance intakes as they will kill your bottom end

your on the right track with what you have in mind ramtuff
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  #8  
Old 11-13-2000, 09:38 PM
Tim_K Tim_K is offline
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At the Mopar Nationals this year, I went to the seminar at the Best Western on Brice Road where Herb McCandless was having a seminar. Some people got the subject to small block intakes, and Herb was comparing the Edelbrock performer and performer rpm to the MP intakes. I asked how the performer rpm compared to the LD-340. He said the LD-340 is a race manifold, and can work good on a high performance street car.
I was happy to hear that. My '79 Aspen R/T 360-4 has an LD-340 on it that I bought from a shivvy guy about a year ago for $70 who didn't know what it was.
So I'd say for you to get an LD-340.
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  #9  
Old 11-13-2000, 11:28 PM
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The-Challenger The-Challenger is offline
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The edelbrock LD340 aluminum manifold
# P3549884 is a dual plane design that works very well for street and strip. i dont think they have been made for about 20 years. i bought one this fall for 70 dollars plus shipping. i think i got a great buy. i put a parts wanted add on the moparchat buillten board and got a responce within a week.
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  #10  
Old 11-14-2000, 10:41 AM
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I also had a 318 with 360 heads, but with headers, in a Coronet. It had a stock 4bbl carb and TQ I picked up at a wrecking yard; this setup produced plenty of low-end and got respectable gas mileage. This engine set-up is now going into a 67 cuda with a dual plane Edelbrock. I am also replacing the TQ with a Holley (don't worry TQ fans; my dad is using it in his 72 360 Dodge van.)

You shouldn't go wrong with any of the afore-mentioned manifolds. If you are like me, you will go with the most affordable. If you get a used one, I recommend a shop checks it out for cracks and replace the heater hose and bypass hose pipes.
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  #11  
Old 11-14-2000, 03:32 PM
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rumblefish360 rumblefish360 is offline
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Ram tuff truk; Just where is it you want to end up. Like the goal you have in mind? The cast iron 340 is good. So is a TQ intake. (I like the spreed bore idea) After the performer type intakes, the RPM ranges start @ 1500RPM. Are you going that direction?

djswwg; The rating comes from a swap of intakes on a bone stock eng. Old intake off. New intake on. Hmmmmmm...

The Challenger;
I can't believe my eyes. You have a part # for that intake! What a blast. Your right, they have not made that intake for a long time. Picked mine up for a big buck ($100)at a speed shop. And Gave it the recomended mods. Now to port the heads!! It works nice. Lots of top end from this thing. Did not expect that. WOW, What pep this things got!!
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  #12  
Old 11-14-2000, 10:02 PM
ramtuff truk ramtuff truk is offline
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If by some chance I can find an LD340 intake, I'll get one.But, for now I think the kid will have to live with a good spreadbore carb (gas pains are killing him) and a performer intake I found for 25 bucks.It appears that the edelbrock carb already on the car now doesn't have that extra kick when he nails it.(Not like the old thermoquad did).He wants tire shredding bottom end and I want a good dependable tow vehicle!Thanks for the ideas and options guys.Just trying to show him how other people have done it and what works.
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  #13  
Old 11-15-2000, 02:40 AM
PRO PRO is offline
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ramtuff,consider your engine combo as a "whole" package,1st you have open chamber big cc volume 360 heads on a 318 block,this will equate to "low" compression,around 8:1 without any milling,you dont have any bottom end because you have low compression,the easiest way to help this is change the cam,short duration with low compression will work,the only shortcoming to this approach is a limited redline,MP's P4452757 has .410/.425 lift & 248*/256*,this will make tire burning low end w/o sacrificing mpg,your redline will be 4800-5000 rpms,use a stock 340 intake(preferably 1970-71).Ive run this exact combo b4 in a 70 Dart w 318 w 360 heads,headers,holley 750,auto with 3.23s posi,it went 13.90....have fun(get headers and duals)...PRO...
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  #14  
Old 11-15-2000, 08:59 PM
ramtuff truk ramtuff truk is offline
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I think tha actual advertised comp. ratio is a little higher than you stated.This is on the 318hp police engine and by all accounts, has the factory heads on the motor according to records that came with the car.I know the cam was changed but we have no information or specs on it.It's definately not a choppy idle nor does it have low vacume at idle to signify too large of a profile for street use.Aren't the early 340 cam specs pretty close to the specs you sent me?They sounded strangely familliar.So on goes the performer intake(with no ac cause the clutch sheared off)and a new spreadbore carb(havn't decided which one yet).And I wish we could run headers and true dual exhaust, but it won't pass state inspection laws here.The book states whatever came on the car origionally has to remain that way from the motor back to the cat,but If the car had dual exhaust as an option,you can run it on a factory equipped single exhaust car,but if theres no dual listed, it can only be split into duals after the cat ,BUT NOT BEFORE!Sure we can go through the hassles of switching systems once a year to get a sticker,but thats a pain.I know, I know,if ya wanna play .....
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  #15  
Old 11-16-2000, 04:16 AM
Dennis Jokela Dennis Jokela is offline
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IF YOU ARE GOING TO RUN THE EDELBROCK PERFORMER MANIFOLD. I WOULD RECOMMEND THAT YOU RUN YOUR EDELBROCK 600CFM CARB, AND SAVE SOME MONEY. IF THE CARB IS IN GOOD SHAPE IT SHOULD WORK FINE ON A 318. THESE ENGINES ARE EASY TO OVERCARB.

MY 360 ENGINE IN MY SCAMP RUNS A 625CFM CARTER AFB. ALL THE MAGAZINE ARTICLES SAY THAT I SHOULD RUN A 750CFM, BUT WHEN I DO THE CAR IS TWO TENTHS SLOW IN THE QUARTER. IT DOSN'T MATTER WHETHER I USE A HOLLEY OR CARTER. IT SOUNDS LIKE YOUR VEHICLE IS MOSTLY STREET DRIVEN,SO A SMALLER CARB WILL BE MORE STREETABLE.

DENNIS
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  #16  
Old 11-16-2000, 06:37 AM
Springfeet Springfeet is offline
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What about the new performer rpm air gap intake? I don't know who sells it yet, but it's on Edelbrock's site and I think it's listed for the 318's....
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  #17  
Old 11-16-2000, 01:49 PM
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rumblefish360 rumblefish360 is offline
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NO no. its a 340/360 size intake port. I Have one on my self on the shelf waiting for the rest to get done.
Call Edelbrock to see if the make a small port version. I doubt it but call anyway.
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  #18  
Old 11-18-2000, 03:13 AM
djswwg djswwg is offline
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rumblefish360, thanks for the info on the Holley street doms,that makes sense. djswwg
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  #19  
Old 11-18-2000, 05:54 AM
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rumblefish360 rumblefish360 is offline
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djswwg no problem, I read it some where. Interesting story.
ramtuff. The Edelbrock LD340 it a spreadbore intake with secondaries to clear the thermoquad.
DENNIS JOKELA.. I agree, a 750 is to much sometimes. I also run a 625 Carter on my 360. It just makes sense. It's just amazing what they will write. Next thing you know, some clown will start writing about the Edelbrock 800cfm working perfect on his 273.
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  #20  
Old 11-20-2000, 04:08 AM
djswwg djswwg is offline
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FYI. Here's a little bit of info which goes along with rumblefish and dennis jokela's comments; my brothers 70 swinger with 850 thermo and 292/508 mopar cam was a quick little car, but a little lazy on take-off. Went to a 280/480 cam and the take-off cured right up, no more laziness. Then went to a 750 holley vac.sec. and performance improved noticably again, thru out the entire rpm range. Sometimes smaller is better, especially with a small block.
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  #21  
Old 11-22-2000, 12:41 AM
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rumblefish360 rumblefish360 is offline
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850cfm WOW LOL and I thought I was the only one to do that. I used it to move the car only. Then I took it on the street for Sh@*'s & giggles. Your right about that top end. WOW. A real screamer. Still makes me laugh.
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