High torque 360 LA build camshaft recommendations
- Thread starter Brooks James
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MOPAROFFICIAL
Oogliboogli
The 273 heads would need a flow bench so you could Port them and make sure they flow in that 220 CFM range basically get them worked up to a stock 360 head but higher velocity.
It will shut off at 5,ooo rpm with most cams for the app...because of the heads small port volume to stroke.
It will do what you want....make big low end and not rev high.
Engle has a fast rate 204/216 .479 lift 112 or 114
Industrial engines are purposely de rated and detuned so they can be safely run at wot all the time. Has **** to do with torque production. I used to design applications with industrial engines. Example Ford 2.3's with 2500 rpm max engine speed. Wot all the time. 49 HP. Woohoo
It's hard to increase low rpm power say idle-3000 rpm, best way is displacement cause rpm is fixed, good exhaust cr freeing restriction on intake side and right cam can help but gains will be minimal, don't forget we're looking for part throttle gains.
As for cam recommendation I'd go custom, if not tightest lsa with the mildest duration and highest lift
As for cam recommendation I'd go custom, if not tightest lsa with the mildest duration and highest lift
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The rpm band he's probably mainly looking for increase in performance is idle-3000 rpm and 3000-5000 rpm might be secondary concern but doubt it. To me that's fixed since more rpm ain't an option.
It was CR compression ratio
I change my recommendation then
dirty white boy
50 yr old Juvenal delinquent
or a set of reman 302s...just say'in
I like the title of this post wanted:
High Torque Engine.
What you actually want is a Low End Torque Engine .
High Torque Engine.
What you actually want is a Low End Torque Engine .
MOPAROFFICIAL
Oogliboogli
Well the 413 I referenced with a smaller cam, smaller valves and runners in the heads, a dinky 450 holley, and less cubes made more torque than any 440 in factory trim. And it made peak torque at 2400 rpm.
As you point out, engines are designed for a particular purpose, and sometimes HP numbers just really do not matter.
Or said another way, exactly in the operating range the engine runs in most of the time-especially in a truck motor built to tow.
Higher torque at lower rpms. Give me a nice flat healthy torque curve from 2000 to 4000 rpm for a gas motor in a truck that actually works as one hauling heavy loads, towing, etc.
Looking for more low end power. This isn't rocket science. You can achieve this really only a few ways.
Biggest factor is gonna be displacement. Another is compression. You need both of these. Without these two things all the cam heads exhaust etc isn't getting you there.
If it were me, I'd go stroker, small (but not too small) cam, decent heads like magnum heads. Small ports aren't the solution here. You still need good head flow. I'd get a nice dual plane like a performer rpm, decent carb like a 750.
And, headers BOOST low end power over manifolds. Long tubes will increase low end torque.
TBH if you want low speed torque you're in the wrong forum here. Jump over to the big block forum
Biggest factor is gonna be displacement. Another is compression. You need both of these. Without these two things all the cam heads exhaust etc isn't getting you there.
If it were me, I'd go stroker, small (but not too small) cam, decent heads like magnum heads. Small ports aren't the solution here. You still need good head flow. I'd get a nice dual plane like a performer rpm, decent carb like a 750.
And, headers BOOST low end power over manifolds. Long tubes will increase low end torque.
TBH if you want low speed torque you're in the wrong forum here. Jump over to the big block forum
I'd be very interested to see the torque curve and compare side by side to a factory 440.
I went back through my saved stuff and turns out I was wrong about the 440 part. The chrysler dyno sheet I had was for a long ram 413 that made 495 lb feet, not the industrial motor. Sorry about that.
The 413 industrial motor does make 445 lb feet at only 2400 rpms though. I have searched high and low for a dyno graph for the industrial motors but have not found one yet.
495 wow
It seems that the sonoranic set up had 50 more ftlbs of tork
It seems that the sonoranic set up had 50 more ftlbs of tork
So chrysler engineers didnt design a purpose built engine? Nonsense. Part of that design of the 413 RV engine is the cam with less than 200 @.050 duration. Another part is the small runners in the heads and small valve sizes.
To say it has nothing to do with torque production is asinine. It is absolutely about torque production in the rpm range the engine is designed to function in.
As far as your ferd example goes who gives a rip. Take it to a Ford message board and whine about it there.
Stroker will certainly give a lot more torque. Powernation did an episode with a stroked 5.9 with the stock magnum heads and cam with an air gap, carb, and headers. It made 490 lb ft at 3000rpm, and 430 plus from 2k to 4k rpm. It is all about the intended purpose of the engine and the rpm range it will operate in.
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