Narek H
Well-Known Member
Looking for non hydraulic camshaft for my 64 4speed 273. Looking for something to add HP but keep it street with 800ish rpm starting.
Camshaft for 273
- Thread starter Narek H
- Start date
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4mulas
Fixem'up
The smallest one comp cams makes in a solid is suitable for your needs. I’ve used it. Close to the commando cam but slightly larger. You’ll have to look it up.
A lot of the guys use this one with good success.
iskycams.com
Racing Cam [301444] - $420.00 : ISKY Racing Cams, Do It Right
ISKY Racing Cams Racing Cam [301444] - Racing Cam Solid Valve Lift Int/Ext. 0.425 Valve Lash Hot Int/Ext. 0.015 ADV Duration Int/Ext. 260 0.050 Duration Int/Ext. 216 Lobe Center 108
Narek H
Well-Known Member
Thanks. But this some says rpm 2000-5000. 2K is alotA lot of the guys use this one with good success.
Racing Cam [301444] - $420.00 : ISKY Racing Cams, Do It Right
ISKY Racing Cams Racing Cam [301444] - Racing Cam Solid Valve Lift Int/Ext. 0.425 Valve Lash Hot Int/Ext. 0.015 ADV Duration Int/Ext. 260 0.050 Duration Int/Ext. 216 Lobe Center 108
It's mild.
Would be nice to have it kick in at lower rpm's. I remember my factory 273 Commando not kicking in until about 4500. But man was it fun when it did!!
I think that cam would be fine.
All cams are a compromise that moves power around
from one RPM range to another. At full throttle you
will seldom be below 2000 for very long unless you are
in way the wrong gear.
All cams are a compromise that moves power around
from one RPM range to another. At full throttle you
will seldom be below 2000 for very long unless you are
in way the wrong gear.
Ok. Then choose what you want.
Call Jim at Racer Brown 410 866 7660. Get a custom cam for exactly what you want.
800 rpm is just above idle, What do you have now? I have an Isky in mine now and it has a lot of low end power and revs quick. Honestly, what do you want? I have a small solid Jim ground for close to the original Commando cam. What is in and on top of your engine?
If anyone believes for a hot minute that stupid 2000 RPM minimum for the Isky E4, they deserve whatever dumb choice they make. My God, it's barely above stock.
THere are very few mild solid lifter cams available for the small block Mopar guys. If you just want a replacement for the stock cam Look at Egge or may be Kanter. The Isky E4 is quite close to stock specs and works well. I bet there are a hundred members here on the site that used it in their 273's and like the way they perform. Not racy at all. THe mildest Comp Cam available is a 270/.468 1800-5800 rpm. Don't confuse that with a stock cam or a Isky E4. 260/.425
4mulas
Fixem'up
Does ANYONE make a cam with a published 800 rpm starting range?
Stock torque converters are around 1400-1800 aren’t they?
Stock torque converters are around 1400-1800 aren’t they?
Yes sir. That's about right.
4mulas
Fixem'up
Seems to me like the one rusty recommends is a pretty good choice then….
All the solid lifter cams Summit lists for the small block, their most mild one starts at 1800. That's a misnomer though. It starts making power at 1800. That's not the minimum idle speed. DODGE COMP Cams 20-246-4 COMP Cams Magnum Solid Camshafts | Summit Racing
roccodart440
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Never go by advertised RPM ranges, ever. Mine is 3500-8500, makes peak power at 5,900...
If you don't understand basic camshaft tech, call and have a custom grind made for your specific needs / wants.
Looking at a 273 engine, i'd be picking my cam in an attempt to overcome it's limitations. The 273 has a cubic inch displacement that is as small or smaller than a 6 cylinder, is head limited and intake valve limited. It's iron headed, so it's more fuel sensitive as well.
So, hang the valves open longer, lift the valve only as far as needed and widen your LSA. The wider LSA will help with the octane requirement and also improve the idle you are saying you want.
If you don't understand basic camshaft tech, call and have a custom grind made for your specific needs / wants.
Looking at a 273 engine, i'd be picking my cam in an attempt to overcome it's limitations. The 273 has a cubic inch displacement that is as small or smaller than a 6 cylinder, is head limited and intake valve limited. It's iron headed, so it's more fuel sensitive as well.
So, hang the valves open longer, lift the valve only as far as needed and widen your LSA. The wider LSA will help with the octane requirement and also improve the idle you are saying you want.
Narek H
Well-Known Member
SO this is all on me not having enough knowledge on this.
It seems that everyone is referring to ISKY E4. I'd like to understand what the RPM range means? If Isky states 2000-5000 does it mean on a low idle my engines gonna be running cranky and shaky? and means engine runs smooth from 2000+ ?
My intention is to add a bit power (My engine is 273 NON commando, nut I am adding EGGE pistons) but I do not want to turn the car into a drag/racingengine where I can event enjoy slow speeds/cruises....
You're learning. I put a E4 in my 273. I mentioned how mild it was a couple times above and included a video of mine idling. I don't know what else we can do to tell you about it. Like I said in post 12, there aren't too many mild solid lifter cams available. The E 4 is quite close to the factory 4 barrel cam which was quite mild.
jeff alder
Well-Known Member
The commando 273 is a good all-around production camshaft. 66fs is spot on. Jim at Racer Brown can hook you up. It is good in town, on the highway or passing a SEMI
Narek H
Well-Known Member
Yeap I guess I miss understood the RPM range meaning. My intention is to add a bit power (My engine is 273 NON commando, but I am adding EGGE pistons) but I do not want to turn the car into a drag/racingengine where I can event enjoy slow speeds/cruises....
That's one of the most popular 273 grinds there is. Quite frankly, I would love to see one in a 360. It would be a total tire melter. Which Egge pistons are you going with? The Commando pistons would be a better match, but it will run fine either way.
Narek H
Well-Known Member
Pistons are egge L2222-8
That's the higher compression Commando pistons. That will be an excellent running little engine.
With stock heads and today's head gaskets you will end up with about 9 1/2:1 compression.
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