340 lifter bores bushed or not ?? Solid Roller cam

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Arthur moore

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I’m running a solid roller cam in my old 340 with the passenger side only lifter bores bushed. I’m working on a new 340 & I’m gonna use the crane ultra pro solid roller lifters.
My question is should I have the new block lifter bores bushed or will these lifters work w out ?
Also I’ve never had a oiling issue in the old block w just the passenger side done & the new machine shop wants to bush both sides, is there a need to do both sides ?
 
depends on how bad your lifter bores are worn out
lifter bore angle and short is hard on lifter bores
 
do they make any drop in mech roller lifters for a 340 no work needed on the block ?
 
I think it’s the BAM lifters that do this easy enough. I forget these little in and outs.
 
rumblefish360 said:
I think it’s the BAM lifters that do this easy enough. I forget these little in and outs.
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thanks i want to convert my 340 to solid rollers but don't want to start pulling it out to be machined
 
I hope that works out well for you. Depending on your lift, you may want to look for a solid lifter body, the oil band can be raised up and out of the lifter bore causing a pressure drop in oil.
 
Morel 4723

Screenshot_20200729-100648.png
 
Nat said:
do they make any drop in mech roller lifters for a 340 no work needed on the block ?
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Yes, a few.
But I think people are particular or are sold on this or that...be it lifter wheel diameter or brand or the latest greatest.
I use Morel , the ones with the shallow oil band and feed holes to dump oil on the wheel/bearings, they drop in and cost 300 something. They are street rollers not meant for 550+lbs... I run them 220 seat and 475 open w/.575 roller. No failures so far.
The lifter bores need to be in good shape.
For instance if you've already rebuilt the block two or three times and you're at 40 or 60 over chances are the lifter bores are probably worn out first solid roller lifters without being bushed...and then there is the factory counter sink...too deep and you bleed off oil psi at or around max lift.
 
Have you figured out the Morels max lift?
 
rumblefish360 said:
Have you figured out the Morels max lift?
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No but I will in the next 3-4 months and report back for my block anyways. I have never heard of the Morel only good for under 550lb spring pressure. I think that might just be your personal preference.
 
yellow rose said:
I would spend the money and get something with a bigger wheel.

That .750 wheel is just too damn small.
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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...
 
mini said:
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...
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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.
 
yellow rose said:
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.
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Those cranes are fir gen expensive!
 
yellow rose said:
LOL. Yup. Pay once, cry once. I broke a bunch of the lesser lifters, but I was HARD on parts. I just don’t like taking chances.
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Honestly the amount I have put into this motor I would be better of (in some ways) to buy a complete r5p7 setup.
 
mini said:
No but I will in the next 3-4 months and report back for my block anyways. I have never heard of the Morel only good for under 550lb spring pressure. I think that might just be your personal preference.
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To be clear, there are different versions.
Mine are a different part number than yours.
Nit picking wheel size is tiresome.
Like saying how you upgraded to aluminum eddy/speed blaster heads from 1.88 smoggers ...and the guy next to ya says "oh you should have had them ported"...
If you think a .750 wheel roller doesnt make more power than a compariable solid flat ...you're smoking some bad ****.
 
MOPAROFFICIAL said:
To be clear, there are different versions.
Mine are a different part number than yours.
Nit picking wheel size is tiresome.
Like saying how you upgraded to aluminum eddy/speed blaster heads from 1.88 smoggers ...and the guy next to ya says "oh you should have had them ported"...
If you think a .750 wheel roller doesnt make more power than a compariable solid flat ...you're smoking some bad ****.
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Who said wheel size made power? You just made that up. The bigger wheel is a durability issue.

To argue that is beyond ignorant.
 
Do it right, do it once , bush the block and run any roller you want.
Why upgrade to a roller and use an old lifter bore.
 
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