[Tim Corcoran]

Some interesting info regarding hyd roller lifters on the Butler website

https://butlerperformance.com/n-1349...formation.html

[JLMounce]

Thanks for sharing Tim. This is actually some really great information.

I've got about 30K on my set of Lunati lifters that are pre-update. Never had any durability issues, but they are extremely noisy. This spring I intend to change the lifters for piece of mind and this measuring information will come in handy. I'll be able to choose the lifter that best fits my cam and block.

[78w72]

Whats the benefit or using restricted pushrods they mention on aluminum heads? Is it just for drainback issues vs iron heads? I run 72cc O-port E-heads with an OF cam & comp 857(s) lifters and pushrods provided by SD performance, he never mentioned restricted push rods for this combo. Are they really needed for Alum heads?

[steve25]

Mainly yes, but I am kinda surprised that Butler does not also recommend the use of full roller rockers with the restricted push rods.

I would not trust for example running the half rollers rockers like the comp cams ones with restricted push rods, I mean at times they have screwed up on folks even with non restricted oiling!

[Formulajones]

Originally Posted by 78w72

Whats the benefit or using restricted pushrods they mention on aluminum heads? Is it just for drainback issues vs iron heads? I run 72cc O-port E-heads with an OF cam & comp 857(s) lifters and pushrods provided by SD performance, he never mentioned restricted push rods for this combo. Are they really needed for Alum heads?

Nope,
Never used restricted in aluminum head builds here and never an issue

[napster]

Having the comp Evolution lifters installed on my '70 T/A. Mechanic had to order new push rods since the new lifters are longer than to old ones. Having them changed to remove the noise from the old lifters.

[srmmmm]

Very interesting. I now understand why the pushrods originally purchased with the Comp lifters and roller rockers didn't work with the Johnson hy-lifts we wound up using.

It might be helpful to see a weight comparison of the units as well.

[grivera]

Sounds like the Evolution lifters are a possible solution to HR lifter issues

[78w72]

Originally Posted by Formulajones

Nope,
Never used restricted in aluminum head builds here and never an issue

Kinda what I was thinking... never had any issues related to drain back on my 2012 made E-heads, I know they have less drainback than factory heads and that when ported they usually open up the drain back holes more, but for the ~7 years with this engine & lots of miles & drag strip runs, ive never noticed any issues with drainback or too much oil to the top end.

[rolling money pits]

Originally Posted by grivera

Sounds like the Evolution lifters are a possible solution to HR lifter issues

Shurkey or toms has them as well, not in use afaik.

I’m eagerly awaiting feedback on them….

[Formulajones]

Originally Posted by 78w72

Kinda what I was thinking... never had any issues related to drain back on my 2012 made E-heads, I know they have less drainback than factory heads and that when ported they usually open up the drain back holes more, but for the ~7 years with this engine & lots of miles & drag strip runs, ive never noticed any issues with drainback or too much oil to the top end.

Yeah, dad has one of the first sets of round ports from Edelbrock he bought in the 90's. Said to be the worst for drain back but I've never once seen an issue with it and they've been on 2 engines now.

[Formulajones]

Originally Posted by grivera

Sounds like the Evolution lifters are a possible solution to HR lifter issues

Although I've never had any hydraulic roller issues at all I do have a set of evolutions waiting for me to finish a 355 build.
Turns out I'm doing a 502 build first and comp doesn't make the necessary .300 taller lifter in an evolution that's needed for the gen6 block. So I'm going with a Howard's heavy duty .750 wheel for that one.

[Skip Fix]

My first run of E heads solid roller motor until I put sealer on the rocker studs(Eddy does not have that on their instruction) they sucked oil only when idling a long time-yes it was street driven. If I hit the brakes hard to make the first turn around at the track even with a Milodon road race pan oil would drop as a lot was sitting in the head. I even radiused the oil holes entrance! Lots of guys put drains form head to oil pan.

Small drain holes and the bottom rail none but small pushrod holes in the top by intake like factory heads. Interestingly the Chevy aluminum Fast Burns and the Blueprint Engine copies they use have large holes at the top compared to even the iron Vortec based head and with no guideplates or even pushrod slots like the iron heads really need a good self aligning roller tip rocker vs even the stamped steel rocker, but probably drain better!

[Skip Fix]

I have a new 455 build on the stand with the 857S lifters in it no restricted pushrods. I had gotten a set of retrofits from Mark at Luhn when I was building it that I think very LS bodies and the oil band was way off.

Buddy has a RAIV headed 455 at the machine shop he is using a cam designed by Lee and the new Comp lifters.

In Butlers picture of different height oil holes that first roller 455 was a 72 HO block (cast on Feb 29th1) that I was going to run SFT lifters and tapped the holes for restrictors -holes were bigger than the 1/4" restrictors Butler usually sold . After tapping some of the hole was above the SFT top on the base circle! FOund out preoiling it with the valley pan off!Why I had to go to taller roller lifters!

[Gach]

Originally Posted by grivera

Sounds like the Evolution lifters are a possible solution to HR lifter issues

Saw a couple YouTube videos on Evolution lifters, installed on Chevy motor, complainant was they are noisy, the did sound very loud.

[Gach]

That Information on Butler site opens that door, I’ll let you fill in the blanks, my brother is a big Butler guy but when he has a problem of course he calls me. I usually don’t get involved. He’s a mamaLuke. A little bit about his combination its a 462 ci with Butler E-heads, bragging on how its a 650 hp pump gas hydraulic roller motor. Well guess what that hydraulic roller wiped out I really didn’t want to get involved. It was a nightmare trying to get Butler to make good on it. All the usual questions posted once I assured Butler everything in that list check out ok. I mean I don’t blame Butler it’s a lot of mamalukes out there. They have to deal with. So eventually Butler made good on it and sent him a whole new set up. It turn out ok, but they are noisy as hell. It was a Bitch going though the whole motor again. Needless to say he’s not a happy camper. I do have to mention that I’m not the one who originally did the motor, but hey he’s my brother so you know how that goes.

I had issues with a 400 SBC and comp hydraulic roller I mean comp made good on it. But I wouldn’t put another hydraulic roller in. I know I know some guys are running them, had no issues. But you couldn’t give me A hydraulic roller set up.

[jhein]

I have the Johnson OPR (reduced travel) lifters. They are super quiet. I'm not using restricted pushrods and I've never seen a hint of decreased oil pressure. And (since i've been aware of this question for a while) I've watched my oil pressure as closely as I can and still not crash, and I drive fairly aggressively, both straight roads and curves. Other factors, I have a stock oil pan and windage tray from BOP. But regardless of how I think I may drive, it's still a street car, not a race car. So that may be different.

[grivera]

Originally Posted by Gach

Saw a couple YouTube videos on Evolution lifters, installed on Chevy motor, complainant was they are noisy, the did sound very loud.

First negative thing I’ve heard about them, will have to check out those videos

[Gach]

Here’s link. Evolution lifters removed and replaced with stock GM

https://youtu.be/fZQCKgfV-Kg?si=ttdACiyfiSm-U-Vz

[Gach]

Thats how my brothers are real noisy. He’s running 10-30 oil. He’s really thinking about going with a solid roller he can’t believe how my solid roller motor sounds.