Go Back   DODGE RAM FORUM - Dodge Truck Forums > Dodge Ram Generations Forum > 1st Gen : 1981 - 1993 > Engine & Performance


Engine & Performance

How do I get more power out of my 318?


This is a discussion on How do I get more power out of my 318? within the Engine & Performance forums, part of the 1st Gen : 1981 - 1993 category!
So here's the deal, I have a stock 318, in a mostly stock 1984 Dodge D150, and simply put, this ...


Sponsored By: Moe's Performance
Reply
 
LinkBack Thread Tools Display Modes
Old 08-11-2016, 05:13 PM   #1 (permalink)
 
Dead Reckon's Avatar
Junior Member
 
Join Date: Aug 2016
Age: 27
Posts: 19

Ram Year: 1984
Engine: 318 LA
Talking How do I get more power out of my 318?
So here's the deal, I have a stock 318, in a mostly stock 1984 Dodge D150, and simply put, this V8 would make the Warboys of the Mad Max universe laugh, or cry, or both. It's got vacuum issues, I need to check the distributor advance, and I feel like the only reason it's running at all is because the previous owner put a cap, rotor, plugs, wires, and an ignition control box on it.

I am replacing the timing chain and redoing the exhaust soon. The timing chain will be replaced by a Sealed Power CTS3000 kit, and I'm planning on going for a high flow cat and Cherry Bomb shorty glasspack in 2.5 inch exiting out in front of the passengers side tire.

I know these two things alone will wake the engine up, but how about a 4bbl intake and Holley carb? New distributor too? I don't like rebuilding distributors. Are factory 4bbl Thermoquads any good? I know someone who rebuilds carbs, so a used one is probably gonna be the solution. I know with GM the Quadrajets are loved and hated equally, I always liked the absurd secondaries kicking the crap out of the engine. But I know nothing about the Thermoquads. Or could I go cheaper and slap on a 500CFM 2bbl that's a bit better? Is the mounting pattern for a Chrysler intake standard size?

So yeah, in short, I want more power out of this engine, how do I make more power? Headers are a no go, not spending that kind of money on them or a mini starter.

Thanks in advance, I got up to some shenanigans in my '77 Olds, and this truck ought to fill that void nicely if I can just wake the 318 up, it feels like it's sleeping. Fuel economy, who needs it? Power and noise, that' the way I like 'em.


Sponsored Ad
Register to remove this ad.
Dead Reckon is offline   Reply With Quote
Old 08-11-2016, 08:05 PM   #2 (permalink)
 
crazzywolfie's Avatar
Senior Member
 
Join Date: Apr 2013
Location: under the truck
Posts: 13,427

Ram Year: 81 93
Engine: 5.2
Default
if you are replacing the timing chain and possibly changing the intake spend the bit extra and swap out the cam. an RV/towing cam would even make a stock 2 barrel a bit more responsive.

as far as vacuum lines go you should go through them first and make sure there is no leaks and possibly remove any unneeded lines. you can test the vacuum advance on the distributor. if it is working properly and you have a 4 pin ignition system then i would probably leave it alone.

as far as carbs go i am personally a fan of the holley 4 barrels for how big the float bowls are. they deal with the heat way better than the other brands. i got a 670cfm holley street avenger on my 81 but i got it leaned out and it still wastes fuel. also have you possibly considered EFI? summit has some fairly cheap kits. you can get a whole setups from FiTech for under $1500 and their kits are pretty good. the computer even has the option to control electric fans if you got them or plan to get them.
https://www.summitracing.com/int/par...0003/overview/
https://www.summitracing.com/int/par...0003/overview/

also if you want a mini starter you are best to buy one used at a auto recycler. you can get them cheap off any 88-98 dodge with a 239, 318 or 360. they are super cheap and easy to fix if it does need work. only thing that ever has issue with time is the contacts in the solenoid. they also make removing the starter in the future so much nicer


__________________

81 dodge d150 custom long box 318 670CFM Holley Street Avenger Carb
89 RamCharger 4x4 318/727/3.21 on 33's
93 ramcharger 318 FI 2wd
crazzywolfie is online now   Reply With Quote
Old 08-21-2016, 06:34 PM   #3 (permalink)
 
Dead Reckon's Avatar
Junior Member
 
Join Date: Aug 2016
Age: 27
Posts: 19

Ram Year: 1984
Engine: 318 LA
Default
I've decided I'm gonna give a Edlebrock carburetor a try, 500CFM. You mentioned headers, I can get a new ministarter for a 94+ Dodge Ram 318 for around $100 new, or 80 rebuilt. What headers fit the best for $250 or less? Gotta keep the budget down 'cause I gotta have an exhaust shop make a crossover and X pipe. It's just a thought, nothing decided yet on the headers, if I don't get them I'll get a new walker Y pipe to delete the pre-cat on the drivers side.

Not gonna cam it, don't want to risk it, the heads didn't look too great when I go tthe valve cover gaskets done the other day. Lots and lots and lots of flaky buildup. The head bolts where buried in it.

Sorry for the delay, and thanks for the input, probably selling my Buick tomorrow, so I can get my truck on the road and maybe pick me up another gun at the Hillsville Fleamarket / Gun show this labor day weekend. Fun times!
Dead Reckon is offline   Reply With Quote
Old 08-21-2016, 09:08 PM   #4 (permalink)
 
crazzywolfie's Avatar
Senior Member
 
Join Date: Apr 2013
Location: under the truck
Posts: 13,427

Ram Year: 81 93
Engine: 5.2
Default
at least your not over carburating the engine like most people do. you could try contacting an auto recycle and you might be able to get a mini starter cheaper from them. i don't know which header will fit perfectly. i think most usually require a bit of beating to make them fit. the big thing is to compare the flange thickness. i think the cheaper they are the thinner it is and the more likely you are to be battling with exhaust leaks in the future.

without a cam you won't get the most out of the other upgrades. i am pretty sure summit even sells a rv/towing cam/lifter kit for cheap.


__________________

81 dodge d150 custom long box 318 670CFM Holley Street Avenger Carb
89 RamCharger 4x4 318/727/3.21 on 33's
93 ramcharger 318 FI 2wd
crazzywolfie is online now   Reply With Quote
Old 12-22-2016, 09:24 AM   #5 (permalink)
Junior Member
 
Join Date: Sep 2016
Posts: 8

Ram Year: 2013
Engine: 5.7 Hemi
Default
If the heads are not looking great... you could get more power by going with the magnum head conversion, they have higher ratio rockers and are better flowing. You could pull off a set in a junkyard, but be warned, most of them are probably going to be cracked. They tend to get hot spots, so it may be hard to find a good set of magnum heads. Or you can play it safe and get some new aftermarket ones. Just make sure you get oil thru lifters/pushrods and such, takes a few changes to convert.
84lamb250 is offline   Reply With Quote
Old 12-30-2016, 12:03 AM   #6 (permalink)
 
Sniper X's Avatar
Senior Member
 
Join Date: Dec 2016
Age: 49
Posts: 113

Ram Year: 1991
Engine: 318
Default
Yes and RV cams are not for power, they are for mileage only. A while back a guy talked my buddy into putting one in the 440 in his ramcharger for better mileage, it only got about 2mpg better than the 440 Magnum cam, and lost what felt like half the power.


__________________
Resistance is not futile, it is voltage divided by current.
Sniper X is offline   Reply With Quote
Old 12-30-2016, 12:10 AM   #7 (permalink)
 
crazzywolfie's Avatar
Senior Member
 
Join Date: Apr 2013
Location: under the truck
Posts: 13,427

Ram Year: 81 93
Engine: 5.2
Default
well you can either have good mileage or lots of power. it is hard to get both especially with something like a 440. from what i have been told RV cams usually wake up a stock 318 pretty good

personally i wouldn't recommend putting magnum heads on an LA block. do a complete engine swap if you want the better flowing heads. don't do half a job. then you don't have to dick around with mix matching of parts especially if you have stuff fail on you.


__________________

81 dodge d150 custom long box 318 670CFM Holley Street Avenger Carb
89 RamCharger 4x4 318/727/3.21 on 33's
93 ramcharger 318 FI 2wd
crazzywolfie is online now   Reply With Quote
Old 12-30-2016, 02:36 AM   #8 (permalink)
 
Sniper X's Avatar
Senior Member
 
Join Date: Dec 2016
Age: 49
Posts: 113

Ram Year: 1991
Engine: 318
Default
I doubt anyone thinks they can do something impossible, buld big power on a no power motor. Unless the 318 was a performance 318 out of say a Plymouth or Dodge Stinger or Swinger or Dart GT, it is not going to make big power unless one spends a ton of money on it. The only way to do it right it a good set of aftermarket heads or super expensive 340 heads, and a quality cam and lifetrs, headers, carb, intake and so on and so on. IF you just want to make BETTER power than a tired ass old 318 has, that's easy. Have the stock heads rebuilt with a 3 angle valve job and new guides, possibly even shaved for a little more compression, get a set of hooker headers, Edlebrock intake, a medium street strip cam say about 280 degrees of duration. And possibly even bore the motor .30 over and buy a set of 10:1 pistons. You MAY see 300hp. Possibly even more.


__________________
Resistance is not futile, it is voltage divided by current.
Sniper X is offline   Reply With Quote
Old 12-30-2016, 11:25 PM   #9 (permalink)
 
CC12RamLove's Avatar
Senior Member
 
Join Date: Oct 2013
Location: Escondido CA
Posts: 306

Ram Year: 2012
Engine: 5.7 Hemi
Default
I grew up driving my dads b150 van with a 318. 360 intake manifold and a holly 4 brl and fuel pump and a beefed up cam and updated electric ignition. Decent gains. Finally we ripped it out. Full build. Block bored and balanced heads done with valve job, new cam carb and msd ignition system. Would rip the 305 tires off. Pops put some money into it but it was a solid engine.

Sent from my SM-N920P using Tapatalk


__________________
That Was Fun!
CC12RamLove is offline   Reply With Quote
Old 12-31-2016, 10:50 AM   #10 (permalink)
 
Jimmy68's Avatar
Senior Member
 
Join Date: Aug 2015
Location: Lethbridge Alberta Canada
Age: 48
Posts: 1,395

Ram Year: 2001
Engine: 5.2L Magnum
Default
This is such an easy job to do and it seems to be getting lost and confused in conversation.
Yes, it all costs money. But if your at the chain swap then put in a nice cam and lifters. Unless you just can't afford them.
4BBL is nice and a nice Edelbrock perfomer RPM manifold would be nice.
I happened to use a stock 4BBL manifold (hard to find now) and a wrecker 750 Q-jet off a 350. Nice and cheap. I had a 360. But a Q-jet off a 305 or 307 will fit the bill for you. Q-jet came stock as 500cfm/750cfm and 800cfm (hard to find, off some Big blocks).
Heddman headers are nice and fit well without modification in my old truck. Quality was good and price was $200 at the time.
Mini starter is like $60 at the wrecker.
All done your still looking at several hundred bucks by the time your done.


__________________
I've done more stupid sh#t as an adult than I ever did as a kid.
Trudeau & the NDP.
daylight savings. Leave the clocks alone.
NO TO BILL 6.
Jimmy68 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
NEW PRODUCT!! 2013-2015 Ram 1500 Truck Power Heated Puddle Light Signal Power - Foldi 1ATony 1A Auto 94 07-14-2016 03:20 PM
13-14 Ram 2500 POWER FLD Power Heated Memory Turn Signal Puddle Light Flip-Up Texture 1ATony 1A Auto 0 06-21-2016 02:54 PM
SAVE 5% Off in June 2002-2008 Dodge Ram 1500 Truck Power - Folding Power Heated Turn 1ATony 1A Auto 0 06-09-2015 12:39 PM
SAVE 5% Off in June 2013-2015 Ram 1500 Truck Power Heated Puddle Light Signal Power - 1ATony 1A Auto 0 06-09-2015 12:32 PM
2013-2015 Ram 1500 Truck Power Heated Puddle Light Signal Power - Folding Textured Up 1ATony 1A Auto 0 02-02-2015 04:54 PM

<




GM Truck Forum
Ford Raptor Forum
Chevy Tahoe Forum
Chevy Cobalt Forum
Chevy Camaro Forum
Toyota FJ Cruiser Forum
Ford Truck Forum
88-98 GM Truck Forum
73-87 Gm Truck Forum
Ford Expedition Forum
Chevy Equinox Forum
Chevy Cruze Forum
Jeep Liberty Forum
Jeep Forum
Dodge Ram SRT10 Forum
Chrysler 200 Forum
Scion xD Forum
Scion xB Forum
Dodge Challenger Forum
SRT Forum
Nissan Titan Forum
Buick Enclave Forum
Cadillac Forum
Cadillac XTS Forum