340 lifter bores bushed or not ?? Solid Roller cam

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Who has the bigger wheels?
Not for having to bush lifter bores (all 820 wheels I researched had a higher oil band) and figure out oil hole sizing. And they double price tag. Bullet recommended the 750 wheel for my cam. Sure in a perfect world 815-820 would have been better and more reliable but it just wasn't practical. But what do I know...
 
Who has the bigger wheels?



You can get an .815 wheel in a .904 body and that’s about it. So when you look at it the other way, the .750 is about as big a wheel as you can get in the junk .842 lifter body.

Which is why the VAST majority of cheap lifters have the .750 wheel...because they use that wheel because it’s the one they buy the most.

Jesel makes lifters in .937, and IIRC 1.060 or something and probably more, and they don’t do it just because.

They do it because the bigger the body, the bigger the wheel, the bigger the wheel, the bigger the axle (or bushing) and all that bigger makes the lifter that much more durable. And on top of all that, the bigger wheel has a slower feet per minute than a smaller wheel. Again, durability.
 
Bullet is not too swift. JMO. You should be running a solid body lifter, like the Crane Pro Series.

They are worth every penny. I don’t let cam grinders pick my springs or lifters.
Bullet, not my fav.
Who said wheel size made power? You just made that up. The bigger wheel is a durability issue.
Are you?
To argue that is beyond ignorant.
You just made that up. I said '.750 solid roller vs a solid flat tappet' I have no durability issues, otherwise we would be discussing them. You keep bringing that up but dont have any dog in this...meanwhile me and many others have been running them for years!
 
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Thanks, I get that, but that was good to write up for everyone. I’m just looking for who makes the lifter with a bigger wheel. I thought it would be a good thing to list here.

You can get an .815 wheel in a .904 body and that’s about it. So when you look at it the other way, the .750 is about as big a wheel as you can get in the junk .842 lifter body.

Which is why the VAST majority of cheap lifters have the .750 wheel...because they use that wheel because it’s the one they buy the most.

Jesel makes lifters in .937, and IIRC 1.060 or something and probably more, and they don’t do it just because.

They do it because the bigger the body, the bigger the wheel, the bigger the wheel, the bigger the axle (or bushing) and all that bigger makes the lifter that much more durable. And on top of all that, the bigger wheel has a slower feet per minute than a smaller wheel. Again, durability.
 
That's odd the 4723 are the entry level solid roller Morel. From what they offer today anyways
There was a 53 version. Looks like the retro fit hyd..but they're solid. Herbert sold them for years...then the part number changed.
I have the package they came in. I'll have to see the exact number, not that it matters now.
 
Bullet, not my fav.

You just made that up. I said '.750 solid roller vs a solid flat tappet' I have no durability issues, otherwise we would be discussing them. You keep bringing that up but dont have any dog in this...meanwhile me and many others have been running them for years!


Always better to be lucky than good. And when you don’t run your **** hard, everything works.
 
Always better to be lucky than good. And when you don’t run your **** hard, everything works.
How hard are you running it compared to the next guy! Lol
Pretty sure when anyone commits to a solid roller they are going to be running it hard.
 
How hard are you running it compared to the next guy! Lol
Pretty sure when anyone commits to a solid roller they are going to be running it hard.


You would think so, but not many do.

The lobes out there today are so aggressive that the small wheel just can’t keep up. The other factor is the cam core and base circle size.

The chrysler has a bigger cam core and base circle (it should anyway) so for the same lift, the chrysler lobe will be bigger. IOW’s, to travel the same distance in lift, the wheel has to cover more feet per minute. That ups the wheel speed a bunch for the same lift and RPM as a chevy core.

That means the wheel speed will reach critical on the Chrylser before it does on the chevy. And wheel speed is a parts killer.
 
The lobes on my cam are not real aggressive because I drive it a quiet a bit on the street. Had it been a race only deal we would've used a more aggressive lobe.
 
The lobes on my cam are not real aggressive because I drive it a quiet a bit on the street. Had it been a race only deal we would've used a more aggressive lobe.
Just for ***** and grins what are your cam spec's?
 
You would think so, but not many do.

The lobes out there today are so aggressive that the small wheel just can’t keep up. The other factor is the cam core and base circle size.

The chrysler has a bigger cam core and base circle (it should anyway) so for the same lift, the chrysler lobe will be bigger. IOW’s, to travel the same distance in lift, the wheel has to cover more feet per minute. That ups the wheel speed a bunch for the same lift and RPM as a chevy core.

That means the wheel speed will reach critical on the Chrylser before it does on the chevy. And wheel speed is a parts killer.
Now that makes sense. Id like to put together some stuff on wheel speeds. I'd hate to do all this work and overspin a lifter to grenade it.
 
solid vs roller depends on the duration
Jones inverse flank roller comes out on top more often than flat flank roller
 
Now that makes sense. Id like to put together some stuff on wheel speeds. I'd hate to do all this work and overspin a lifter to grenade it.

For ever inch of circumference of your cam lobe a .750" roller will roll .15" more than a .800" roller will to cover that 1". Each turn of the .750" roller is covers 2.36" the .800" wheel will cover 2.51" for each rotation.
 
For ever inch of circumference of your cam lobe a .750" roller will roll .15" more than a .800" roller will to cover that 1". Each turn of the .750" roller is covers 2.36" the .800" wheel will cover 2.51" for each rotation.


That’s assuming the same sized base circle correct?

What do the numbers look like when you compare a SBC sized base circle to the same lobe with a SBM sized base circle??

TIA
YR
 
That’s assuming the same sized base circle correct?

What do the numbers look like when you compare a SBC sized base circle to the same lobe with a SBM sized base circle??

TIA
YR

No, that's for every inch of circumference of the lobe. If the lobe was 3" circumference a .800" roller would turn about 1.2 turns, a .750" roller will turn about 1.27 turns in one full lobe revolution.

Using the 3" circumference at 6000 rpms (cam at 3000) the .750" roller should be turning 3810 rpms and the .800" roller should be turning 3600 rpm's.

If my math is correct.
 
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Now that makes sense. Id like to put together some stuff on wheel speeds. I'd hate to do all this work and overspin a lifter to grenade it.
Base circle is a key factor.
Does one blindly slap together a parts list of what they deam is "the ****"...meanwhile none of it was meant to tango on the same dance floor..I'm saying if the grinder/manufacturer is worth their weight in tit , they will put together a package that will accomplish the goal and not send it to bits. You run a small wheel for a small wheel cam. Pressure likewise..so whoever you got the cam from..ought to know what you need and be able to reccomend/ sell it to you. There was a guy who had comp or cranes good solid rollers and one took a **** on the street.im of the mindset to run what you need and anything can happen at wot..
 
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