Ok, Here goes, 1984 360 dodge ramcharger engine, Yes on a budget, yes i know of the simple up grades headers intake , carb,etc, i found that the hp rating is only 180, on this engine, i have read the 400 hp build up on the 318, something i would like to do, I can get 360 magum heads 250.00 each, intake 300.oo , comp cam 260 kit 300.oo something dollars , im looking at pretty much 1100.oo dollars right there, before i start building the lower end, can i get that hp out of the stock la heads for less money, or do i just need to dig deep and sell a few limbs to get the magnum stuff, what is the hp difference in using the magnum heads vs the la , how much lift can i go using the la heads and the stock rockers and will i be able to reach that 400hp goal using those stock , how much can i deck the heads and the block, i figure using the hyper. pistons on the rebuild , what compression ratios am i looking at, with the two set ups, it will be basically a dailly driver in my 81 cj7, i have taken all the drivetrain from the ramcharger and put in the jeep, any advice would be greatly app. Thanks  

First of all, I think the Magnum heads are worth it.  With very minor port-work, 45 minutes at most, makes a huge gain.  In addition to that, the cylinder head has a nice quench area.  Professional products makes a nice air gap intake for only $160-$180.  I like about 9.5 to 1 compression just for driveability and durability on a street car.  I kind of like the XE 262H Comp Cam with that Magnum head and all of that done, this motor should make a legitimate 360-380 hp.
Also, if you can afford it, it would be nice to deck the block too, to insure that you're within .005 of zero deck. Good luck.  Thanks.  

COOL, thanks for the reply, I called professional products and that referred me to napa with a part #, for the intake, its about thirty dollars cheaper then the one in summit, (THANKS), I think i read somewhere about using sb chevy roller rockers on the magnum heads and machine work required or is it just the simple bolt on,
Thanks again for all you help,
Have a blessed day,
Joe  

The SB chevy roller rockers can be used for Magnum heads. A standard Magnum rocker ratio is 1.6, which is good, and you can get the studs with a 3/8 shaft. By the sounds of what you're planning, you should be fine, so just get 1.6 SB Chevy rocker arms for a 3/8 stud, and the studs.  

cool ,thanks for the replies, if you know of any other tricks PLEASE let me know,
Joe  

the correct guide plates and studs are olds stuff comp cams has it.  

Where you located? I've a set of heads, new springs locks and retainers, "BROKE IN" and ready to run.
also have a alum. intake and carb, see parts for sale, 318-360. Will sell the heads for $275.00 for both.

765-692-0276 Connersville, In        Jeremiah  

From what I have read in this mag and other mags magnum heads do not bolt up, and are not compatible with your LA series block. Do not buy Magnum series heads with rollers, they will not work with older LA series blocks. Find some older 914 360 four barrel heads, have them rebuilt,  or just buy some Edlebrock aluminum heads for double the price of the rebuild and
get twice the perfomance.  You can pick up HP buy putting in thinner head gaskets.  

This is a great build no matter how its done.  
My personal ride is a 67 Satellite with a home built  
74 360.
1. J-heads ported and polished with 2.02/1.60 Valves.
2. 340 510 lift valve springs.
3. 1.5 proform aluminum roller rockers.
4. Mopar performance solid cam advanced 4 degrees,  
   241 duration at .050 528 lift
   with .020 adjustment, 508 final lift.
5. 750 double pump with 50 *** pumps.
6. professional products rpm style intake.
7. hypernumatic pistons low comp.
8. .040 machined from heads with thin gaskets for a
   comp. of 9.5/1
9. Eagle I beam rods, stock crank with new balancer
   and B&M flex plate.
10. H.D. oil pump with black spring, 70 lbs hot.
11. Moroso deep pan, run 6 litres 20w/50 race oil.
12. Headman ceramic headers, excellent fit and torque.
13. 727 with shift kit and 3500 stall converter.
14. M/T dot drag slicks.
15. 4.30 gear posi with 489 case.

Performance 12.89 et, 106.7mph. This in a 3600 lb B body street car. The MPH suggests 400 plus HP.
Still fine tuning, and expect some 12.70's this yr.  

Factory  Magnum heads only barely out flow 1.88 1.60 LA heads and cost way more to run than LA also when you turn the wick up with magnum pedestal rockers they fail or need girdles to delay there inevitable failure not to mention you have to run oil through push rods/AMC lifters.
Hey how about headers, oops you just cost your self twice as much for headers now. Oh you wanna run 2.02 intake valves?=18.95 ea. unless you wanna put chevy parts in your Mopar, oh but that's more machine work=$, there go's cheap.
Not to mention there is no power advantage beyond the closed chamber.modified/not

BTW good combo drmopar I run the same cam in my 340 it likes 10.5 comp.  

I agree with your comments regarding the L.A. heads vs. the Magnums, that is why I searched out a pair of J heads and warmed them over.
They have the best power vs. cost factor, in fact a friend switched from Iron LA heads that were warmed over to Edelbrocks. He picked up nothing E.T. wise.
This was in an 11.5 second car, go figure.  

Dr. Mopar  

Ok ,WOW, i just got some heads and then i check on here and now i have doubt in my head that the magum heads wont fit on a la style engine, NOW WHAT!!!,  I READ where they put them on a la 318, so is there something else i need to know about putting the magum heads on, besides correct push rods and getting the roller rockers and stud ,PLEASE HELP, Thank you  

If magnums are what you got then this is what you will need to run them.....
Heads bolt right on but to get them oiled you'll need oil through push rods w/AMC lifters, magnum intake manifold, magnum headers, magnum pedestal rockers.
BTW do your self a favor and port out all the finned swirl port crap out.  

In order to run Magnum heads on your LA block, you will need to make some changes.

1st: The heads will physically bolt on the block, no problem there.

2nd: LA style heads oil the valvetrain through the rocker shaft, Magnum heads oil through the push rods. You will need AMC lifters, and pushrods with oiling provisions.

3rd: Since the Magnum heads do not use shaft mount rockers, you will need to get stud mounted rockers.

4th: The intake attaching bolts on LA style heads are angled, and the Magnum style heads have the bolts going straight down. So, if you are changing to Magnum heads, you need to change the intake as well.

5th: I recently replaced an LA-headed small block with a Magnum-headed small block, and the headers used with the LA heads bolted up and worked fine on the Magnums.  

As far as the intake goes the Professional Products RPM style intake is the best. It has a dual bolt pattern for both the LA heads and the Magnum Heads.
The Professional product appears to be a copy of the Edelbrock RPM intake at a fraction of the cost.