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Re: building a 360 what to expect from this combo?
[Re: RapidRobert]
#1705161
11/30/14 09:24 PM
11/30/14 09:24 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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Quote:
Quote:
I would like to see 400+ hp
You will see that
I disagree.
Mid 300s at the wheels.
Mopar Muscle just ran this:
Quote:
he 422ci stroker combination in Steve Moyer's '71 Plymouth Duster is the top LA-Series small-block in our competition. With 343 wheel horsepower on tap, it is a stout street combo, based on a stock 340 block and a 4.00-inch stroke crank. The modest compression ratio of 9.5:1 generated by Diamond dished pistons ensures easy pump gas performance, the gasoline being fed via a Quick Fuel 750 carb perched upon an Edelbrock AirGap intake manifold. The cylinder heads are Indy T/A's, a variation of the Edelbrock casting with offset intake rocker arms for a larger port cross-section. Mopar Performance supplied the cam, featuring 272 degrees duration at .050-inch and .533-inch lift.
RPM: HP:
4,200 222
4,300 253
4,400 275
4,500 292
4,600 308
4,700 321
4,800 331
4,900 337
5,000 343
Max Power 343
That engine had similar displacement, similar heads, one step smaller cam, and an extra 60 cubic inches.
It didn't even come close to 400 hp at the wheels.
Will his engine make 400 hp at the crank? Sure! Will it be a fun street car? You bet. Will it make 400 rwhp? Not without nitrous.
If you're building to hit a specific hp number I think you're looking at things the wrong way.
Build the engine to run how you want it to run and let the numbers fall where they fall.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: building a 360 what to expect from this combo?
[Re: Supercuda]
#1705165
11/30/14 09:38 PM
11/30/14 09:38 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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Quote:
Kinda overkill for 400hp.
http://www.hotrod.com/how-to/engine/hrdp-0804-small-block-mopar-engine/
Read that again:
Quote:
Mopar Magnum 360
SuperFlow 901 engine dyno
Now, take out 20% for drivetrain loss.
448 crank hp?
OOPS!!! There went 90 hp.
It's down to 350 at the wheels.
Try this one on for size:
Quote:
A big-inch Gen II Hemi muscle motor in an iconic muscle car is a hard combination to beat. This 528-cube Hemi is wall-to-wall motor under the hood, with Indy cylinder heads providing the flow, and a Ray Barton single-plane manifold fed by a 950-cfm Demon carb delivering the atmosphere. The pump delivers a mild street-friendly compression ratio of 10:1—mild enough to fill at the corner station. The big Hemi exhales through TTI headers flowing into a 3-inch exhaust system featuring Flowmaster 40 mufflers.
RPM: HP:
5,000 337
5,100 363
5,200 376
5,300 383
5,400 392
5,500 401
5,600 406
5,700 404
5,800 404
5,900 405
Max Power 406
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: building a 360 what to expect from this combo?
[Re: goldmember]
#1705170
12/01/14 12:47 AM
12/01/14 12:47 AM
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Joined: Mar 2005
Posts: 3,142
Central NC
gch
master
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master
Joined: Mar 2005
Posts: 3,142
Central NC
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he 422ci stroker combination in Steve Moyer's '71 Plymouth Duster is the top LA-Series small-block in our competition. With 343 wheel horsepower on tap, it is a stout street combo, based on a stock 340 block and a 4.00-inch stroke crank. The modest compression ratio of 9.5:1 generated by Diamond dished pistons ensures easy pump gas performance, the gasoline being fed via a Quick Fuel 750 carb perched upon an Edelbrock AirGap intake manifold. The cylinder heads are Indy T/A's, a variation of the Edelbrock casting with offset intake rocker arms for a larger port cross-section. Mopar Performance supplied the cam, featuring 272 degrees duration at .050-inch and .533-inch lift.
RPM: HP:
4,200 222
4,300 253
4,400 275
4,500 292
4,600 308
4,700 321
4,800 331
4,900 337
5,000 343
Max Power 343
Is it just me or would that engine not make peak power higher than 5000rpm?Maybe the cam spec of 272* @ .050 should have been gross duration.
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Re: building a 360 what to expect from this combo?
[Re: gch]
#1705171
12/01/14 01:08 AM
12/01/14 01:08 AM
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Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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no the cam spec is correct.
that is one big hydraulic cam..
Part number is P4529317
*P4529317 320/320 272/272 104 108 .533/.533 P5249847 3800-6400
Last edited by 70AARcuda; 12/01/14 01:25 AM.
Tony
70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: building a 360 what to expect from this combo?
[Re: gch]
#1705172
12/01/14 01:56 AM
12/01/14 01:56 AM
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Joined: Sep 2004
Posts: 6,906
IL, Aurora
ademon
master
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master
Joined: Sep 2004
Posts: 6,906
IL, Aurora
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Quote:
he 422ci stroker combination in Steve Moyer's '71 Plymouth Duster is the top LA-Series small-block in our competition. With 343 wheel horsepower on tap, it is a stout street combo, based on a stock 340 block and a 4.00-inch stroke crank. The modest compression ratio of 9.5:1 generated by Diamond dished pistons ensures easy pump gas performance, the gasoline being fed via a Quick Fuel 750 carb perched upon an Edelbrock AirGap intake manifold. The cylinder heads are Indy T/A's, a variation of the Edelbrock casting with offset intake rocker arms for a larger port cross-section. Mopar Performance supplied the cam, featuring 272 degrees duration at .050-inch and .533-inch lift.
RPM: HP:
4,200 222
4,300 253
4,400 275
4,500 292
4,600 308
4,700 321
4,800 331
4,900 337
5,000 343
Max Power 343
Is it just me or would that engine not make peak power higher than 5000rpm?Maybe the cam spec of 272* @ .050 should have been gross duration.
Looks like to much cam and a out dated one at that for a anemic 9.5 cr. Plus the carb is small.
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Re: building a 360 what to expect from this combo?
[Re: moturbopar]
#1705176
12/01/14 05:31 PM
12/01/14 05:31 PM
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Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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Sounds like a nice motor to me, the only thing I would change is the EX lobe, use the same one as the intake, the magnum EQ flows real good on the exhaust and does not need the chevy cam.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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