Mopar 360 380hp crate...whos running them ?

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go-fish said:
Are these 380 HP’s still available?
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I believe 2004 was the last year offered by Mopar Performance. I have seen some online offered for 10k which is ridiculous. I dont know if its greed, stupidity or both. No one in their right mind will fork that over.

Might find one stored in a barn or removed from a running car to be replaced
 
273 said:
Ya find a running 5.9l Magnum and add a cam similar to crate engine, something like 230/235 108 .500
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This is how you get it done. Comp cams has a very similar Hyd. roller cam like the crate engine. DODGE COMP Cams 20-812-9 COMP Cams Xtreme Energy Retrofit Camshafts | Summit Racing The single plane intake is the hard thing to find. IMO, your better off with a Edelbrock RPM-AG. Then just do what MoPar said to do. 750 carb and 1-3/4 tube headers. Just up grade your valve springs.

The cool thing about the engine was it always dyno’d over 400hp easy. With stock heads no less.
 
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I'm actually detuning mine, bought a crosswind airgap and a Comp Cams 20-604-9 264/274 .512/.512 112 050 inch lift 210 int./220 exh 900-5200rpm.
I'm ok with if it goes down from 400hp+ to 360-380hp got the same lift. Looking for more off idle power it's mainly just a driver not a race car.
 
I had a brown 72 Duster 360 ,380 hp. auto 355's 275 goodyears . fastest was 13.40.

Also has a 1971 white 360 380hp duster 4 spd. 391's. The car was here for work
we took the car out on 946 and raced our 70 340 Duster 4spd 391's to see for our self the difference. The all original 340 Duster pulled a car on the 360 every gear and once we got it into 4th it just kept pulling away. That was with the AC on in the 340 Duster

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Oldmanmopar said:
I had a brown 72 Duster 360 ,380 hp. auto 355's 275 goodyears . fastest was 13.40.

Also has a 1971 white 360 380hp duster 4 spd. 391's. The car was here for work
we took the car out on 946 and raced our 70 340 Duster 4spd 391's to see for our self the difference. The all original 340 Duster pulled a car on the 360 every gear and once we got it into 4th it just kept pulling away. That was with the AC on in the 340 Duster

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Something was wrong on your 380hp cars...my 76 duster was so strong on the street compared to 340 , its not even funny , 340 as around 320-325hp and the 380 crate is 400+ and almost 100 ft pd torque more.
 
ValerianMagnum said:
Something was wrong on your 380hp cars...my 76 duster was so strong on the street compared to 340 , its not even funny , 340 as around 320-325hp and the 380 crate is 400+ and almost 100 ft pd torque more.
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The 360 in the white Duster had headers,Edelbrock Carb.,electronic, and sounded like it would pull a house down. The only difference ws tire size. it had 345' the 340 had bias old L60s.

The red duster had Manifolds, Factory carb, and a factory Dual point,and AC which I had turned on. Idled smooth no big roller Hyd. cam . I am only telling you what That motor in that car ran like against this 340 car. Gear for gear the 340 pulled on the 360. At the track where they hooked up may have been a different story.

The brown Duster with white stripes had a 360 - 380 hp 355's ,auto, headers, 3500 stall, Holley 750, electronic, when it hooked up the fastest time was 1340 with 275 goodyear eagles, All these cars had full exhaust.

The motor from the Duster is for sale I am taking it to Carlisle on a run stand. 340 all original still has the points I bought it with in the 80's.
I might have changed the plugs I don't remember. In case you didn't see the thread here it is. I took the AC off I am keeping. The exhaust pipes and the manifolds do not have gaskets so you hear exhaust leaks.


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273 said:
I'm actually detuning mine, bought a crosswind airgap and a Comp Cams 20-604-9 264/274 .512/.512 112 050 inch lift 210 int./220 exh 900-5200rpm.
I'm ok with if it goes down from 400hp+ to 360-380hp got the same lift. Looking for more off idle power it's mainly just a driver not a race car.
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Yes.

They pulled peak HP that looked good in an advertisement and reeled buyers in.

they didn’t make a great no-brainer street motor for cars without gear and converter.

the 300/320 HP was a better combo.
 
The 360
with KB107s and 63cc heads falls together with the Scr around 10.7.
With iron heads on the street,
you will have to run a fairly late Ica to keep it out of detonation.
But with alloys, you can run a stump-puller cam of about 223@.050. Even if it only makes 335 hp, it will go 12.9 on street tires with 3.55s and an A833, at 3650 pounds........... Ok well mine did; with 60fts solidly in the 2.2s
Oh and it will get fantastic fuel-mileage.
Part of the secret is that with alloy heads, you can actually give the engine the low-rpm timing it wants, so it takes off like an iron-headed BB, hence the 2.2 60fts. Mine, they say, never stops spinning street tires in the EighthMile.
The thing is, with those alloy heads, 10.7 is nothing to them, producing pressure in the very hi 170s.
For a while, I ran that 223 cam at 11.3Scr with pressure close to 200 on my gauge.... and it did it on 87E10 all day long.... at 32* Power-Timing, delayed to 3400rpm.
I won't tell you that this combo got 32mpg with a 1.97Final Drive, and a dedicated hi-way carb, cuz nobody believes it. So you didn't hear that from me, lol.
As a street-combo, that was the best , most fun, most versatile, most satisfying, I ever had.

Then I put a 230* cam in it (from the same manufacturer, dropped the Scr to 10.95, took away the double-overdrive, and went 93 in the Eighth, but the fuel mileage took a huge nosedive.
The Wallace calculator says that 93 in the 1/8th is 433hp at 3467 pounds.
I still miss the prior combo. To get the bottom-end of the 223* cam back, I had to install 4.10/4.30s. Eventually I found a Commando 4-speed with a 3.09 low (instead of the 2.66 of the standard A833 box). I installed that, and went back to the 3.55s. Now it ain't quite so bad.

What has this got to do with the 360/380hp ?
IDK except that the 288/292/108 cam in the crate engine, has overlap of 74*, and in at 104 has an Ica of 68*, which together with the 9.0Scr engine, is predicted to make just 135psi@500ft elevation.
Ok so unless you don't mind running a big TC, and gears;
it will take off like a sick smogger-teen. At 500 ft, the Wallace predicts an adjusted Effective Dcr of a meager 6.9
You could do so much better........
For a comparison, the 11.3 alloy-headed combo I built with the Hughes HE2430AL cam, is predicted to make 192psi, and the Altitude adjusted Effective Dcr was 9.0; and it ran on 87E10, as earlier described.
It went 12.9@106@3650pounds......... trapping in third gear, at ~7000rpm, which is probably why it only posted 335 hp; 7000 was way off the game of that cam. But it was a one-run deal. It didn't break so I drove the 3-hour trip back home.
 
AJ/FormS said:
The 360
with KB107s and 63cc heads falls together with the Scr around 10.7.
With iron heads on the street,
you will have to run a fairly late Ica to keep it out of detonation.
But with alloys, you can run a stump-puller cam of about 223@.050. Even if it only makes 335 hp, it will go 12.9 on street tires with 3.55s and an A833, at 3650 pounds........... Ok well mine did; with 60fts solidly in the 2.2s
Oh and it will get fantastic fuel-mileage.
Part of the secret is that with alloy heads, you can actually give the engine the low-rpm timing it wants, so it takes off like an iron-headed BB, hence the 2.2 60fts. Mine, they say, never stops spinning street tires in the EighthMile.
The thing is, with those alloy heads, 10.7 is nothing to them, producing pressure in the very hi 170s.
For a while, I ran that 223 cam at 11.3Scr with pressure close to 200 on my gauge.... and it did it on 87E10 all day long.... at 32* Power-Timing, delayed to 3400rpm.
I won't tell you that this combo got 32mpg with a 1.97Final Drive, and a dedicated hi-way carb, cuz nobody believes it. So you didn't hear that from me, lol.
As a street-combo, that was the best , most fun, most versatile, most satisfying, I ever had.

Then I put a 230* cam in it (from the same manufacturer, dropped the Scr to 10.95, took away the double-overdrive, and went 93 in the Eighth, but the fuel mileage took a huge nosedive.
The Wallace calculator says that 93 in the 1/8th is 433hp at 3467 pounds.
I still miss the prior combo. To get the bottom-end of the 223* cam back, I had to install 4.10/4.30s. Eventually I found a Commando 4-speed with a 3.09 low (instead of the 2.66 of the standard A833 box). I installed that, and went back to the 3.55s. Now it ain't quite so bad.

What has this got to do with the 360/380hp ?
IDK except that the 288/292/108 cam in the crate engine, has overlap of 74*, and in at 104 has an Ica of 68*, which together with the 9.0Scr engine, is predicted to make just 135psi@500ft elevation.
Ok so unless you don't mind running a big TC, and gears;
it will take off like a sick smogger-teen. At 500 ft, the Wallace predicts an adjusted Effective Dcr of a meager 6.9
You could do so much better........
For a comparison, the 11.3 alloy-headed combo I built with the Hughes HE2430AL cam, is predicted to make 192psi, and the Altitude adjusted Effective Dcr was 9.0; and it ran on 87E10, as earlier described.
It went 12.9@106@3650pounds......... trapping in third gear, at ~7000rpm, which is probably why it only posted 335 hp; 7000 was way off the game of that cam. But it was a one-run deal. It didn't break so I drove the 3-hour trip back home.
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It definitely needs gears and stall to be a good streeter, Mines a bit like a slug, the original owner bought the 380 crate engine but put 2.96 gears and a 2800 stall, under 2000 rpm it lugs got to drive 2nd intown under 40 mph, and to get any sense of it's power got to get up to 40 mph in 1st before hammering it and before you know it i'm going way too fast intown. Gears would make a difference and gonna do a swap to 3.55-4.10 not sure yet but I don't need the top end power anyways so dual plane and a milder cam will work better for me.
 
I currently own 2 of the D/Darts that Dodge built to compete in the D/Stock class in 1966. One was campaigned by Ted Spehar and Ralph Costa. It still has the original engine in it and the 5.30 gears that they used back then. It ran a best of 12.95 at 105.

My other D/Dart has the 360-380 Mopar Performance Magnum crate engine in it. It has 4.10 gears in it.

The seat of my pants dyno says the 380 hp crate engine is a lot faster than the 273-275 hp engine.

As a side note, the 1966 Dart GT's were under 3000 lbs.
 
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