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Re: Magnum Engine in 68 A body
[Re: 440PURSUIT]
#999739
05/25/11 05:08 PM
05/25/11 05:08 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I think the balance is diff so flex plate/tc and you need a LA timing cover and the Hughes' front cam adapter to run a mech fuel pump (it's dirt cheap). Prob more but this'll get you started
live every 24 hour block of time like it's your last day on earth
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Re: Magnum Engine in 68 A body
[Re: 440PURSUIT]
#999740
05/25/11 05:09 PM
05/25/11 05:09 PM
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Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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Quote:
What mounts/exhaust/major concern to replace an LA 318? I know that the Carbureted intake can be expensive.
Tech article available?
THanks
Same rules apply for 5.2/5.9 mounts as 318/360
a 5.2 will slip in the same spot as a 318 with no to little issues, I have a 5.9 in my Duster.
Intakes can be tricky but there is lots of options out there.
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Re: Magnum Engine in 68 A body
[Re: gdonovan]
#999741
05/25/11 09:14 PM
05/25/11 09:14 PM
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Joined: Jul 2003
Posts: 6,167
Maryland
GO_Fish
master
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master
Joined: Jul 2003
Posts: 6,167
Maryland
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if you are handy, and have access to both Magnum and LA heads, its not that hard to make your own jig and cross drill the magnum heads to accept any LA intake.
Scott B.
"I'm a self-made man... I started with nothing, and I still have most of it!"
68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph
69 340 GTS stock 14.18@ 95.60 mph
01 5.9L Ram 1500 Quad Cab 4x4
01 3.5L 300M 16.23@ 86.97 mph
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Re: Magnum Engine in 68 A body
[Re: RapidRobert]
#999742
05/25/11 09:19 PM
05/25/11 09:19 PM
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Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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Quote:
I think the balance is diff so flex plate/tc and you need a LA timing cover and the Hughes' front cam adapter to run a mech fuel pump (it's dirt cheap). Prob more but this'll get you started
5.2 and 318 the same as far as balance, 360 and 5.9 are different.
See this thread for 360/5.9 info-
https://board.moparts.org/ubbthreads/show...t=1#Post6068818
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Re: Magnum Engine in 68 A body
[Re: gdonovan]
#999743
05/25/11 09:28 PM
05/25/11 09:28 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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yup, 5.2L magnums are internal/zero balance. the 5.9s are external, and a different balance factor than the LA360s.
there's a cheaper carb intake out there, it's not a name brand, but it's a copy of an Eddy RPM airgap, 4bbl carb intake (no bosses drilled for injectors) and comes with a dual bolt pattern for both LA and Magnum style heads. not well marketed, being non-name brand, but I saw a few on Ebay.
**Photobucket sucks**
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Re: Magnum Engine in 68 A body
[Re: Jim_Lusk]
#999747
05/26/11 02:23 AM
05/26/11 02:23 AM
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Joined: Feb 2003
Posts: 1,665
Milwaukee, WI
Prince_Valiant
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,665
Milwaukee, WI
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Quote:
In my opinion, there's not enough to gain unless you keep the fuel injection and computer management. Otherwise, simple hop-up stuff to the 318 you already have will suffice.
Better heads and roller cam...will perform as well or better than a simple hopped-up LA engine while the magnum is mostly stock.
I ran a stock 360 magnum (aside from intake), with stock 1979 manifolds and ran 15.1 @ 91 mph in the little red truck. Using a hughes roller cam (mild one at that) and headers and it felt like a completely different truck...low 14's probable. A similarly hopped up LA probably would have been only a little quicker than the stock-ish magnum was...
1979 Dodge Lil' Red Express - 360 rwhp, 13.2 @ 103mph
1968 Coronet: 318, 2.76, 15.2 @ 92mph! (SOLD)
1976 Valiant: 360, 3.90, 12.90 @ 106 (SOLD)
1989 Shelby CSX #500/500
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Re: Magnum Engine in 68 A body
[Re: Prince_Valiant]
#999748
05/26/11 03:07 AM
05/26/11 03:07 AM
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Joined: Mar 2003
Posts: 18,677
Fresno, CA
Jim_Lusk
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 18,677
Fresno, CA
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Quote:
Quote:
In my opinion, there's not enough to gain unless you keep the fuel injection and computer management. Otherwise, simple hop-up stuff to the 318 you already have will suffice.
Better heads and roller cam...will perform as well or better than a simple hopped-up LA engine while the magnum is mostly stock.
I ran a stock 360 magnum (aside from intake), with stock 1979 manifolds and ran 15.1 @ 91 mph in the little red truck. Using a hughes roller cam (mild one at that) and headers and it felt like a completely different truck...low 14's probable. A similarly hopped up LA probably would have been only a little quicker than the stock-ish magnum was...
I don't think 15.1 is that much better than stock for an LRT, but I could be mistaken. I'd throw an LA 360 in place of a 318 before I'd go for the same cubes in a swap. I've done a 318 Magnum swap, but it was all the way with the injection and overdrive auto AND it didn't cost me anything. I'd do that again if given the chance, but not without the injection.
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Re: Magnum Engine in 68 A body
[Re: Jim_Lusk]
#999750
05/26/11 08:50 AM
05/26/11 08:50 AM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
In my opinion, there's not enough to gain unless you keep the fuel injection and computer management. Otherwise, simple hop-up stuff to the 318 you already have will suffice.
nah the roller set-up and much better heads make it a no-brainer. Even w/ a small 4bbl it should run much better than a stockish 69 318.
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Re: Magnum Engine in 68 A body
[Re: Jim_Lusk]
#999753
05/26/11 10:35 AM
05/26/11 10:35 AM
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Joined: Feb 2003
Posts: 1,665
Milwaukee, WI
Prince_Valiant
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,665
Milwaukee, WI
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Quote:
Quote:
Quote:
In my opinion, there's not enough to gain unless you keep the fuel injection and computer management. Otherwise, simple hop-up stuff to the 318 you already have will suffice.
Better heads and roller cam...will perform as well or better than a simple hopped-up LA engine while the magnum is mostly stock.
I ran a stock 360 magnum (aside from intake), with stock 1979 manifolds and ran 15.1 @ 91 mph in the little red truck. Using a hughes roller cam (mild one at that) and headers and it felt like a completely different truck...low 14's probable. A similarly hopped up LA probably would have been only a little quicker than the stock-ish magnum was...
I don't think 15.1 is that much better than stock for an LRT, but I could be mistaken. I'd throw an LA 360 in place of a 318 before I'd go for the same cubes in a swap. I've done a 318 Magnum swap, but it was all the way with the injection and overdrive auto AND it didn't cost me anything. I'd do that again if given the chance, but not without the injection.
Well, the "stock" engine in an LRT though isn't quite what we consider "stock bread n' butter" LA engine per se.
Don't forget that the stock 360's used a hotter cam of which approximated a "340 cam" (~212-218 @ .050) to get to the 225 net HP. While the cam in the magnum was indeed the stock roller cam that is sub 190 @ .050 in size....the cam I upgraded to was not even as large at .050 than the stock cam typically found in the e58 engine in lrt's...
But for the record, most of the stock lrt's I've seen for 79's were typically in the mid 15's....but in effect, the stock e58 represents you're typical mildly hopped up 360 w/o headers...I think an e58 w/ headers would have been a close match, but mine w/ the same headers and equivalent sized cam at .050, it'd be no contest.
1979 Dodge Lil' Red Express - 360 rwhp, 13.2 @ 103mph
1968 Coronet: 318, 2.76, 15.2 @ 92mph! (SOLD)
1976 Valiant: 360, 3.90, 12.90 @ 106 (SOLD)
1989 Shelby CSX #500/500
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Re: Magnum Engine in 68 A body
[Re: Prince_Valiant]
#999754
05/26/11 12:14 PM
05/26/11 12:14 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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magnum 5.9L, stock cam, heads, pistons, carb intake, headers, and they make what...300 hp? that's the combo for the 300hp crate motors, right?
bump the compression with either flat top pistons or shave the heads, add a cam, and you have the recipie for the 385hp crate motors.
so...a 385hp small block for the cost of a junkyard 5.9L magnum out of a wrecked 01 Durango, and a cam swap. I built mine for $1000. $500 for the motor and head shave job, and the roller cam, springs, retainers.
**Photobucket sucks**
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Re: Magnum Engine in 68 A body
[Re: Prince_Valiant]
#999755
05/26/11 06:05 PM
05/26/11 06:05 PM
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Joined: Aug 2007
Posts: 1,819
Middle of A Field
OrangeProwler
top fuel
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top fuel
Joined: Aug 2007
Posts: 1,819
Middle of A Field
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Quote:
Quote:
Quote:
Quote:
In my opinion, there's not enough to gain unless you keep the fuel injection and computer management. Otherwise, simple hop-up stuff to the 318 you already have will suffice.
Better heads and roller cam...will perform as well or better than a simple hopped-up LA engine while the magnum is mostly stock.
I ran a stock 360 magnum (aside from intake), with stock 1979 manifolds and ran 15.1 @ 91 mph in the little red truck. Using a hughes roller cam (mild one at that) and headers and it felt like a completely different truck...low 14's probable. A similarly hopped up LA probably would have been only a little quicker than the stock-ish magnum was...
I don't think 15.1 is that much better than stock for an LRT, but I could be mistaken. I'd throw an LA 360 in place of a 318 before I'd go for the same cubes in a swap. I've done a 318 Magnum swap, but it was all the way with the injection and overdrive auto AND it didn't cost me anything. I'd do that again if given the chance, but not without the injection.
Well, the "stock" engine in an LRT though isn't quite what we consider "stock bread n' butter" LA engine per se.
Don't forget that the stock 360's used a hotter cam of which approximated a "340 cam" (~212-218 @ .050) to get to the 225 net HP. While the cam in the magnum was indeed the stock roller cam that is sub 190 @ .050 in size....the cam I upgraded to was not even as large at .050 than the stock cam typically found in the e58 engine in lrt's...
But for the record, most of the stock lrt's I've seen for 79's were typically in the mid 15's....but in effect, the stock e58 represents you're typical mildly hopped up 360 w/o headers...I think an e58 w/ headers would have been a close match, but mine w/ the same headers and equivalent sized cam at .050, it'd be no contest.
A stock LRT will run 15.8 to 15.9 in the 1/4 mile.
Sometimes a little slower. I've seen a couple in the 16.0 range.
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Questions? Help!
[Re: 440PURSUIT]
#999756
05/27/11 07:18 PM
05/27/11 07:18 PM
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Joined: Dec 2004
Posts: 1,548
DC, MD Suburbs
440PURSUIT
OP
pro stock
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OP
pro stock
Joined: Dec 2004
Posts: 1,548
DC, MD Suburbs
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OK. Bought a fresh rebuilt 5.2 Magnum Longblock from a 95 Truck. Got it for $400. Its going in a 68 B'Cuda Notch.
Is this engine Internal or external balance?
What Torque Converter to use?
I plan to Carburate. I saw the $165 Intake on Ebay.
Should I change cam? Its has the fuel injection cam so may have short duration on intake?
Thoughts?
Thanks
Last edited by 440PURSUIT; 05/27/11 07:19 PM.
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Re: Questions? Help!
[Re: 440PURSUIT]
#999757
05/31/11 01:20 PM
05/31/11 01:20 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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5.2 is internally balanced.
the $165 intake is a professional products crosswind. OK mani, I'd go for a eddie magnum air gap.
get the stock roller cam reground by bullet cams using their HR259/316 lobe for intake and exhaust, and use hughes #1110 springs with their retainers. you should be able to maintain the stock pushrods and rockers (at least I was able to)
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Questions? Help!
[Re: dogdays]
#999759
06/01/11 09:57 AM
06/01/11 09:57 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
I'm putting the stock 5.9 Magnum roller in my '87 318 to go in the 64DOG. It's bigger than the 318 roller, about like the 360 stock cam. But I'm running 3.23s and 32.5" tall rears so torque is important.
My question is what water pump to use on the 87 block to make the radiator hoses line up on the 64 318Poly radiator?
Thanks,
R.
say bye bye to your engine in short order...as far as I remember, OEM magnum cams don't have the oil holes in the #2 & #4 cam journals to oil the top end of an LA motor.
for $150, have bullet cams regrind your LA roller with their HR259/316 or HR258/320 lobe, and on the LA use comp #901's or hughes #1110 springs, eliminating exhaust rotators if you have them.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Questions? Help!
[Re: dogdays]
#999760
06/01/11 10:12 AM
06/01/11 10:12 AM
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Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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Quote:
I'm putting the stock 5.9 Magnum roller in my '87 318 to go in the 64DOG.
The 5.2 has a larger roller than the 5.9, but not enough to get real excited about.
No oiling provisions to the LA heads as somone else already pointed out with the OEM magnum cam, a lot of the aftermarket cams do though.
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Re: Questions? Help!
[Re: patrick]
#999762
06/01/11 02:14 PM
06/01/11 02:14 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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First things first, my camshaft which I think is a CS-1558, has the rocker oiling holes and a long snout for the fuel pump drive. I believe lift is right at 0.400 for both intake and exhaust. I have moved and most of my catalogs are still in boxes. This cam is listed for all roller 360s as well as 5.9 mags.
Second, the replacement lifters for roller 318, 360, 5.2 and 5.9 are all the same number. There is NO DIFFERENCE in roller lifters from 5.2 to 5.9.
Third, if you check your catalogs I believe you will find the 318 roller cams are clones of the ultra-wimpy flat-tappet 318 cam with about 0.370 lift on the intake. The 360 roller version is more like 0.398 on an LA and 0.424 on the Mag motor.
Fourth, the question of which water pump will work with the 87 LA and the 64Poly radiator is still out there. I haven't really studied this as it is easier to ask here.
Fifth, what headers have you used for a 318-powered 67 D100? They don't have to last more than 3 years.
Thanks,
R.
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Re: Questions? Help!
[Re: dogdays]
#999763
06/01/11 03:36 PM
06/01/11 03:36 PM
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Joined: Dec 2006
Posts: 3,533
Indiana
Fury Fan
master
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master
Joined: Dec 2006
Posts: 3,533
Indiana
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If you're talking about this intake: http://cgi.ebay.com/ebaymotors/MOPAR-340...=item5882e82ab0I recently got one from this seller. Be aware, it is NOT a Professional Products intake, it is a ProComp. Due to scheduling issues I haven't installed it yet, and I do have some apprehension about using it. The casting has a crude appearance and there is definitely some core shift in the ports (they cleaned the edges with a burr, presumably to make the ports match). It may just have cosmetic issues and work A-OK -- or it might not seal. I bought it specifically for teh LA/Mag bolting provisions and because I thought it was a Crosswind. Unless you are on a tight budget, or are willing to take a risk, or want both bolting provisions, I'd recommend getting an Eddy manifold. For a little more slightly-related reading: http://www.hotrodders.com/forum/procomp-single-plane-intakes-137169.html
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Re: Questions? Help!
[Re: patrick]
#999764
06/01/11 03:42 PM
06/01/11 03:42 PM
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Joined: Dec 2006
Posts: 3,533
Indiana
Fury Fan
master
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master
Joined: Dec 2006
Posts: 3,533
Indiana
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Quote:
5.2's have more lift, but less duration
Here's a related thread on the cams:
https://board.moparts.org/ubbthreads/show...&PHPSESSID=
I suspect the OEM goal was to give a similar-shaped torque curve between 5.2 and 5.9. The intake manifold was the same, so the cam was tweaked as needed. (obviously the 5.9's curve is higher)
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Re: Questions? Help!
[Re: dogdays]
#999766
06/02/11 11:09 AM
06/02/11 11:09 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
First things first, my camshaft which I think is a CS-1558, has the rocker oiling holes and a long snout for the fuel pump drive. I believe lift is right at 0.400 for both intake and exhaust. I have moved and most of my catalogs are still in boxes. This cam is listed for all roller 360s as well as 5.9 mags.
Second, the replacement lifters for roller 318, 360, 5.2 and 5.9 are all the same number. There is NO DIFFERENCE in roller lifters from 5.2 to 5.9.
Third, if you check your catalogs I believe you will find the 318 roller cams are clones of the ultra-wimpy flat-tappet 318 cam with about 0.370 lift on the intake. The 360 roller version is more like 0.398 on an LA and 0.424 on the Mag motor.
Fourth, the question of which water pump will work with the 87 LA and the 64Poly radiator is still out there. I haven't really studied this as it is easier to ask here.
Fifth, what headers have you used for a 318-powered 67 D100? They don't have to last more than 3 years.
Thanks,
R.
hmm..long snout, oil holes, and ~.4" lift at the valve? sounds like a stock 318 cam from an M body (they were .390" lift at the valve, .26" at the lobe IIRC)
you could have an '89-91 LA 360 roller cam, but AFAIK they were all short snout because they were all TBI.
all replacement roller lifters available now are magnum style. the original lifters in my '86's roller teen don't have oiling provisions.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Questions? Help!
[Re: Fury Fan]
#999767
06/02/11 11:12 AM
06/02/11 11:12 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
If you're talking about this intake:
http://cgi.ebay.com/ebaymotors/MOPAR-340...=item5882e82ab0
I recently got one from this seller. Be aware, it is NOT a Professional Products intake, it is a ProComp. Due to scheduling issues I haven't installed it yet, and I do have some apprehension about using it.
The casting has a crude appearance and there is definitely some core shift in the ports (they cleaned the edges with a burr, presumably to make the ports match). It may just have cosmetic issues and work A-OK -- or it might not seal.
I bought it specifically for teh LA/Mag bolting provisions and because I thought it was a Crosswind. Unless you are on a tight budget, or are willing to take a risk, or want both bolting provisions, I'd recommend getting an Eddy manifold.
For a little more slightly-related reading:
http://www.hotrodders.com/forum/procomp-single-plane-intakes-137169.html
a chinese knockoff company was copied and undercut by another chinese knockoff company? isn't anything sacred? 
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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