|
Budget build 360 with 425 HP How????
#58065
05/09/08 06:32 PM
05/09/08 06:32 PM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
I would like to build a 360 with about 425 HP for a 75 Dart Sport. How would you do it on a budget and what parts would you use and how much do you think it would be to build? It would be basically a street car with a trip to the track occassionally.
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: DaytonaTurbo]
#58068
05/09/08 08:35 PM
05/09/08 08:35 PM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
NOS 
|
|
|
Re: Budget build 360 with 425 HP How????
#58069
05/09/08 08:39 PM
05/09/08 08:39 PM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
BTW it's going to be a Magnum 360. My dad's car is over 425hp (360 Magnum) and it's not stroked.
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58070
05/09/08 09:58 PM
05/09/08 09:58 PM
|
Joined: Feb 2003
Posts: 12,675
Columbia, CT
moper
I Live Here
|
I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
|
Have a shop that does performance engine builds do it. There is no budget way to make 1.5hp/cu inch. But you can do it less expensive. If the engine is a running core, you can re-use the spider and lifters. Have the heads done for performance. I'd have to snoop into cam profiles, and I'd run the MP single plane intake, and probably get some good forged dished pistons and run a cam tht wouldnt keep enough vacuum for power brakes but would bleed off pressure. The only issue is, the power wont be there until mid range rpm. Not a ton of torque below 3000 rpm. 425hp will cost you at least $5K done right by someone for you.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: Evil Spirit]
#58074
05/10/08 11:05 AM
05/10/08 11:05 AM
|
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
Quote:
Quote:
BTW it's going to be a Magnum 360. My dad's car is over 425hp (360 Magnum) and it's not stroked.
The crate Mag 380hp 360 makes good power and all they change are the cam, springs, and intake. A production 360 with the same or similar cam/springs/intake, milled and slightly ported heads and you are probably at the 425hp mark that you are trying to do. 
 This is exactly what you need to do. For that amount of hp get the KB pistons #107 or the forged counterpart but hyper would be fine and budget oriented. Do some basic clean up of the ports, open the bowls, and pushrod pinch a little, get the valves back cut, and smooth the ports out a little. Un ported those heads can easyly make a 400 hp street 318 so get a little mo flow and cubes and 425 is not hard at all and don't really need to turn much over 6000, mabey 6500 tops.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: DaytonaTurbo]
#58075
05/10/08 01:59 PM
05/10/08 01:59 PM
|
Joined: Jul 2005
Posts: 1,044
minnesota
president61
super stock
|
super stock
Joined: Jul 2005
Posts: 1,044
minnesota
|
Quote:
Not gonna happen unless you go with a stroker setup, which IMO does not fit my definition of a 'budget build'. You can however get 375hp out of a streetable, stock stroke 360. I'm not saying the 425 can't be done, however you'd have to spin it to 7k and run a monster huge cam in it which would not be streetable.
I totally disagree. High Performance Mopar mag. did a build up several years ago and got 430hp from a mild 360. Pump gas, ported smog heads, Thermo carb, and stock crank. If you want I can look up the exact specs.
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: Jerry]
#58078
05/10/08 07:33 PM
05/10/08 07:33 PM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
Some great replies. Like I said I'm going to be getting a running 360 Magnum motor. My main thing will be figuring out what parts I'm going to go with and shop around for the best prices. I'll probably go with what my dads current setup is, but not go through the machine shop for parts. The Magnum motor that I'm looking to purchase is from a van and the price is $800. Which seems to be a little high, should I offer less?
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: 84Stepside]
#58081
05/10/08 08:52 PM
05/10/08 08:52 PM
|
Joined: Jul 2005
Posts: 1,044
minnesota
president61
super stock
|
super stock
Joined: Jul 2005
Posts: 1,044
minnesota
|
Quote:
i would be interested in the specs
I found the build up I was thinking of but its not the right one. I'll keep looking. Anyway this particular build up consisted of: 78 360 block and heads(home ported), 9:1 comp, Summit cam 441 lift, Performer RPM, 750 Holley, Hedman headers, and quality machine work. It moved a 1972 Challenger to Mid 12s. they didn't give any HP#s.
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58082
05/10/08 09:19 PM
05/10/08 09:19 PM
|
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
If you pretty much want to keep what you have then pull the heads off dissasemble the short block and have .070 taken off the deck to get the pistons at zero deck. Use a .039 felpro head gasket. Doing this will give a little more compression and quench, both of witch will help hp and tq. Put in a nice roller cam about like the crate motors and a airgap intake. You would only have to buy a gasket set and about $100 machine work and 400 hp is very easy, it would probably make about 415. A little port touch up and a back cut of the valves should give the 425hp.
$800 is a little high around here but not much. $800 will get a late production low miles 360 mag motor here.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: president61]
#58083
05/11/08 01:42 AM
05/11/08 01:42 AM
|
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
|
Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
|
Quote:
Quote:
Not gonna happen unless you go with a stroker setup, which IMO does not fit my definition of a 'budget build'. You can however get 375hp out of a streetable, stock stroke 360. I'm not saying the 425 can't be done, however you'd have to spin it to 7k and run a monster huge cam in it which would not be streetable.
I totally disagree. High Performance Mopar mag. did a build up several years ago and got 430hp from a mild 360. Pump gas, ported smog heads, Thermo carb, and stock crank. If you want I can look up the exact specs.
Again, I doubt that build fits the OP's "budget build" requirement. The headwork needed to get there(or the $ for the aftermarket magnum r/t heads the crate engines run, or other aftermarket heads) plus machine work, plus all required parts, and you total up the $ spent at the end and that does not fit my definition of a budget build, maybe yours, but not mine. 
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: DaytonaTurbo]
#58084
05/11/08 03:50 AM
05/11/08 03:50 AM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
After the complete motor is bought. My budget would be in the 2000 dollar range to build it up.
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58085
05/11/08 10:28 AM
05/11/08 10:28 AM
|
Joined: Jul 2003
Posts: 4,761
Holland MI Ottawa
2boltmain
master
|
master
Joined: Jul 2003
Posts: 4,761
Holland MI Ottawa
|
"Ported heads" may sound simple but really they are not part of a tight budget. ANYTIME a professional goes into a set of heads to increase flow/velocity it is $$$$$. In fact it is so expensive that it very quickly approaches and matches the price of a set of Eddies. If the price of a set of Eddies is not in the budget than I doubt any type of porting is. That said the goal must be realistic for the budget.
Keep old mopars alive.
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58086
05/11/08 11:26 AM
05/11/08 11:26 AM
|
Joined: Jan 2005
Posts: 3,699
Newport, Mi
Evil Spirit
master
|
master
Joined: Jan 2005
Posts: 3,699
Newport, Mi
|
Quote:
After the complete motor is bought. My budget would be in the 2000 dollar range to build it up.
Ya probably need to decide is the $2k budget for the motors hard parts, or does that include carb, headers, ignition, fuel lines and fittings, etc. That can easily add a grand or more to the tab. Following prices are approximate. My approach is if I had a sound 360 Mag core, as in didn't need rebuilt, AND a $2k ENGINE BUDGET, first I'd price a HV oil pump, pump drive, timing chain, and a premium gasket set ($350). New oil pan/pick up to fit chassis? If so, add for it ($200) Next - intake ($300). Cam/springs/rockers/pushrods next ($700). Once I know what I would spend on these items, I could see how much cylinder head work I could afford, which along with cam selection, is where the power is made. At that point, I'd pull the heads and check for cracks, etc. With some shopping around (e-bag/swap meets, etc.) you can probably buy cheaper than the prices that I said. Any good head or machine shop should be able to do a valve job, mill, a little port swabbing, and assemble in the $600 range; again, PRICE. At this time you can make informed choices on where to spend your money.
Free advice and worth every penny...
Factory trained Slinky rewinder.........
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58088
05/11/08 12:55 PM
05/11/08 12:55 PM
|
Joined: Mar 2006
Posts: 1,611
Pataskala, Ohio
GTX70sixpack
top fuel
|
top fuel
Joined: Mar 2006
Posts: 1,611
Pataskala, Ohio
|
Quote:
Some great replies. Like I said I'm going to be getting a running 360 Magnum motor. My main thing will be figuring out what parts I'm going to go with and shop around for the best prices. I'll probably go with what my dads current setup is, but not go through the machine shop for parts. The Magnum motor that I'm looking to purchase is from a van and the price is $800. Which seems to be a little high, should I offer less?
Very high, we just bought a 94 1 ton van in good condition for 500 bucks, the diff is very noisey, 360 motor and OD trans are great.
On the 360, new pistons are a must, compression needs to come up, big cams make it even worse. My son just built a 360 and didn't buy pistons because he's building another short block with a stroker kit. Car is only good for high 13's in it's current state, more compression would have been a big plus.
65 Belvedere II Station Wagon
69 Coronet R/T convertible
70 GTX
70'cuda
99 Dodge Diesel dually 4X4
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: GTX70sixpack]
#58089
05/11/08 08:54 PM
05/11/08 08:54 PM
|
Joined: Mar 2005
Posts: 2,172
Ohio
theclutcher
top fuel
|
top fuel
Joined: Mar 2005
Posts: 2,172
Ohio
|
low compression shortblock about 8.5 to 1 mill heads to get 9 to 1.
factory heads can make 250 air at .500 lift pretty easy.
that and a .500 lift cam and its pretty much there.
add a nice intake, carb, headers and speedway 87 be happy with simple.
Last edited by theclutcher; 05/11/08 08:57 PM.
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58090
05/11/08 09:09 PM
05/11/08 09:09 PM
|
Joined: Mar 2003
Posts: 4,923
Tri-Cities, Washington
VITC_GTX
master
|
master
Joined: Mar 2003
Posts: 4,923
Tri-Cities, Washington
|
Quick and dirty on my 360:
'97 5.9 Magnum complete from a truck, 87K miles
Scott Brown cam 226/238 @ .050, .520"
Three angle valve job, machined down valve guides to accomodate higher lift
MP valve spring and retainers
Crane roller rockers
Eddy Air-Gap intake
Eddy 650 AVS
1 5/8" Hooker headers
Put this in my Demon and on my 7th run I hit 12.76 @ 105.5. Remember this was not only the cars 7th run but my 7th run as a driver. The shortblock is 100% untouched. I used the original pistons, rods, crank, bearing, rings, even the oil pump. I never even took it apart to inspect it. The cylinder walls still had crosshatch in them. I paid $700 for the complete motor from a local JY, I paid less than $2000 for the balance of the motor. Seems pretty close to what you're looking for.
Compared to the old MP 380 horse Magnum I have a larger lift cam and roller rockers but it uses a 750 cfm carb and 1 3/4" headers. I still believe that I have 400 horse. With the larger carb and headers I bet I would be close to 425.
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: HotRodDave]
#58092
05/11/08 11:05 PM
05/11/08 11:05 PM
|
Joined: Mar 2003
Posts: 4,923
Tri-Cities, Washington
VITC_GTX
master
|
master
Joined: Mar 2003
Posts: 4,923
Tri-Cities, Washington
|
Quote:
VITC i like your combo  I bet with just a .070 mill on the block to get those pistons zero deck and some very mild touch up you would get a nice extr load of TQ down low then add the 750 carb and you would probably have 450 hp. That is a real nice cam spec for a stock long block
I am really happy with it and it was my first engine build! On my next one I think I will do more like you suggested...maybe a stroker 
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: Streetwize]
#58093
05/12/08 09:49 PM
05/12/08 09:49 PM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
Would you recommend a set of Magnum RT's or Eddies? Would the RT's need additional porting to come up to the Eddies?
Thanks
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: 2boltmain]
#58094
05/12/08 10:06 PM
05/12/08 10:06 PM
|
Joined: Jul 2005
Posts: 1,044
minnesota
president61
super stock
|
super stock
Joined: Jul 2005
Posts: 1,044
minnesota
|
Quote:
"Ported heads" may sound simple but really they are not part of a tight budget. ANYTIME a professional goes into a set of heads to increase flow/velocity it is $$$$$. In fact it is so expensive that it very quickly approaches and matches the price of a set of Eddies. If the price of a set of Eddies is not in the budget than I doubt any type of porting is. That said the goal must be realistic for the budget.
thats true. the heads in this build up were home ported. I don't know if the originator of this thread can do that himself. That would make all of the difference
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: president61]
#58095
05/12/08 10:55 PM
05/12/08 10:55 PM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
Which would flow better--- Eddies or Magnum R
T's? And how much would it effect HP?
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58098
05/14/08 09:08 AM
05/14/08 09:08 AM
|
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
|
Quote:
BTW it's going to be a Magnum 360. My dad's car is over 425hp (360 Magnum) and it's not stroked.
short block:
KB107's on stock rods that are resized w/arp bolts
stock crank. set them up at 0 deck, use a .039" compressed gasket.
heads:
if the heads are overall in decent shape (no cracks, don't need valves) have the heads gone through, with a 5 angle valve job w/a 75 degree throat cut, open the bowls to about 85-90% the diameter of the valves. do some basic blending of the valve job into the bowl, and smooth out the short turn. profile the valve guide bosses, and open up the pushrod pinch as much as you're comfortable. I'd get the guides cut down a skoash for more lift capability, find some 2.2L retainers and get the MP .6" lift springs.
if the heads need valves or guides, use some SBC 11/32 stem valves .1" longer than stock, ream the guides out to 11/32, and then the world is your oyster for retainers and springs.
if the heads are cracked, talk to http://www.cmengines.com/
for some enginequest 318B heads built up using SBC valves. they quoted me a good price ($850/pr assembled with springs capable of running a hydraulic roller w/.55" lift)
intake, I'd use a magnum air gap, or LD340/RPM/air gap if you get the heads redrilled with LA intake pattern.
cam, I'd talk to one of the many cam grinders to get a hydraulic roller cam ground with ~230-235@.050 intake, about 5 degrees more exhaust, and about .530-.550 lift with the magnum 1.6 rockers. I'd reuse the OEM roller lifters.
add some headers, and 425 should be a walk in the park. with the worked heads and ~10.8 compression they'll give with a 0 deck flat top short block, you might be able to get away with less cam and still make the power number.
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)
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: patrick]
#58099
05/14/08 10:50 PM
05/14/08 10:50 PM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
I have located a 360 motor from a running 99 Dodge with 109,000 miles. Would this be a better block to build from verses and older block? Are these the heads you would build from in an econo build? Does anyone know the price of a set of magnum RT"s?
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58100
05/15/08 08:22 AM
05/15/08 08:22 AM
|
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
|
block is the same for any mag 360, basically...I'd use those heads, too....the only difference between that truck motor and the 380HP crate motor is basically cam, intake, and valve springs.
unported stock magnum heads will support ~410-420hp or so, a little clean up/opening up in the pushrod pinch and bowl and a good valve job and they'll support 450-475 hp...
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)
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: patrick]
#58101
05/15/08 09:28 AM
05/15/08 09:28 AM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
Would you use the crank and rods if they check out good? What about the oil pump...change to a HV or go back with stock? I guess the oil pan would be different to go into a 75 Dart Sport, right? Any and all suggestions are welcomed, thanks for all the replies.
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58102
05/15/08 10:44 AM
05/15/08 10:44 AM
|
Joined: Jul 2005
Posts: 69
BC Canada
cudasam
member
|
member
Joined: Jul 2005
Posts: 69
BC Canada
|
crosswind 360 intake 240 @ .050 cam +- 750 double pumper tube headers drive it 
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: patrick]
#58104
05/15/08 12:33 PM
05/15/08 12:33 PM
|
Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
|
master
Joined: Jan 2003
Posts: 6,266
Renton Washington
|
Power is in the heads PERIOD! My car went from 13.80 to 12.80 going from 915 casting 2.02 heads to OOTB 63cc edelbrocks. No other changes were made.
My motor is just a basic 9:1 340, with a decent set of heads on it.
IMO don't mess around with anything iron/factory unless you already have them. I sold my heads I took off for $300 so I basically have $1000 into my new heads, my car makes way more power, and I took weight off the nose of the car.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
|
|
|
Re: RPM 360 makes 420 HP .
[Re: Triple Threat]
#58105
05/15/08 12:40 PM
05/15/08 12:40 PM
|
Joined: Apr 2007
Posts: 1,261
ILL
mark7171
pro stock
|
pro stock
Joined: Apr 2007
Posts: 1,261
ILL
|
...and they say magnum heads flow real nice. good enough for a RPM cam, and ProProducts RPM Mag/LA crosswind intake.
a RPM 360 with magnum head will get you so close you couldn't tell the difference.
magnum heads $375 a pair rebuilt.
rocker/train stuff you need $180
intake $150
cam $150
---
$850 rpm package, with heads!!
Last edited by mark7171; 05/15/08 12:44 PM.
|
|
|
Re: RPM 360 makes 420 HP .
[Re: mark7171]
#58106
05/15/08 03:34 PM
05/15/08 03:34 PM
|
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
You would do good if you could get $150 for a bone stock magnum head. A cheap way to make gobs of power would be to have Ryan J or some one put a good port job on them plus a set of the mopar .600 lift springs. They would be cheaper than eddys and make more power. The only advantage would be the weight differance but the extra 50 hp from fully ported mags would easily handle the 50 lbs weight saveings from the untouched eddys. The only down side to going this rout is you will be at the limit with the mags but the eddys could get ported more down the road. Magnum heads are the shiznaz for budjet hp! If you only want 425hp then you can almost do it with no porting at all on them
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: Streetwize]
#58112
05/16/08 12:52 PM
05/16/08 12:52 PM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
Streetwize, Is this the type of motor you have you stage 3 manual?
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: twister360]
#58113
05/16/08 04:24 PM
05/16/08 04:24 PM
|
Joined: Jan 2003
Posts: 9,870
Weddington, N.C.
Streetwize
master
|
master
Joined: Jan 2003
Posts: 9,870
Weddington, N.C.
|
If you mean Quick77R/T's motor...yeah that's very close to what I'd call a Stage III level iron head street motor.
As Mark says machineing and block prep are key... and not just in getting the motor to 1 -1.2hp/cube, but to getting it to stay together.
One thing I mention in the manual is that the SB mopar has a better port cross section-to-cylinder volume ratio compared to our 440 big block....alos another nice feature is that the cam tunnel is raised in the block which minimizes crank/cam windage, allows more rod room for strokers and aluminum rods and an added benefit is it makes the pushrods proportionally shorter/stronger and lighter which makes for nice higher RPM (but not too high because the geometry could be better, lol) potential.
I'd go as far as to say that if you are looking to go say as quick as mid high 11's with a factory iron head, It's easier and cheaper to do with an A engine A body than it is with a B/RB engine, B/E body and in the case of the still plentiful 360, it makes for a torquey, very streetable combo.
Last edited by Streetwize; 05/16/08 04:58 PM.
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: Streetwize]
#58114
05/16/08 08:30 PM
05/16/08 08:30 PM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
But in the article they used a fresh crate motor and added eddies to get to the 448HP. What would I need to do if I buy the Ram truck motor with 109,000 miles to get close to those numbers without buying the eddies? Would I want to bore the block if the motor is in good running condition? I want a strong motor but one that will be here a long time as a serious street demon. I want to buy you manual, how do I do it? Thanks
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
Re: Budget build 360 with 425 HP How????
[Re: patrick]
#58116
05/22/08 08:28 AM
05/22/08 08:28 AM
|
Joined: Jul 2007
Posts: 406
Houma, Louisiana
twister360
OP
mopar
|
OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
|
How are rods resized? What are arp bolts?
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
|
|
|
|
|
