TubbyZ28 returns?

[SSlowBoat]

Well this one decides to piss me off. 2 lifters will NOT pump up or pass oil thru pushrod. #7 intake and #2 intake. all others are fine. I took those 2 out and cleaned them, soaked them overnight, put them back in different holes, and they still did not pump up .

the sucky thing is, there are limited options for new hydraulic roller stock style lifters now. the "drop in" morel 7717 do NOT work. the oil band is too tall and they cut oil flow completely off at partial lift.

ended up gambling and buying BTR Delphi LS7 lifters. allegedly they are the same as the gmpp lifters which cost nearly triple. they will be here tomorrow

had 60psi of oil pressure with 10w30 in it priming.

7.150 pushrods in. maybe a hair long but I like the pattern on them more than a 7.100 or 7.050 with these rockers.

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[Z28pr0jekt]

Well this one decides to piss me off. 2 lifters will NOT pump up or pass oil thru pushrod. #7 intake and #2 intake. all others are fine. I took those 2 out and cleaned them, soaked them overnight, put them back in different holes, and they still did not pump up .

the sucky thing is, there are limited options for new hydraulic roller stock style lifters now. the "drop in" morel 7717 do NOT work. the oil band is too tall and they cut oil flow completely off at partial lift.

ended up gambling and buying BTR Delphi LS7 lifters. allegedly they are the same as the gmpp lifters which cost nearly triple. they will be here tomorrow

had 60psi of oil pressure with 10w30 in it priming.

7.150 pushrods in. maybe a hair long but I like the pattern on them more than a 7.100 or 7.050 with these rockers.

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Idk the compatibility but I just went and looked and I have the OEM LS7 lifters and pushrods out of my 32K mile 08 C6 Z06 only removed because I did a heads cam setup with new components. Let me know.

[SSlowBoat]

Idk the compatibility but I just went and looked and I have the OEM LS7 lifters and pushrods out of my 32K mile 08 C6 Z06 only removed because I did a heads cam setup with new components. Let me know.

they would work, I appreciate it. the btr ls7's should be here today.

Basically whoever was making lifters that were getting rebranded stopped. morel is like the only "drop in" anymore, but they are not machined the same. I have the pic somewhere.

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[JOATMON]

That's weird, Black Cloud. (That's a nickname that was given to an electrician I used to work with that always had something go wrong with nearly everything he touched).
It's odd that Catmaigne and now you, have discovered that the lifter oil bands are not always in the correct position to work properly in a conventional SBC even though they physically fit dimensionally. I remembered I have a set of used Comp dogbone style lifters that I would give to you if you need them. But it sounds like your new ones are coming today. It also reminded me that I need to check them in the box and make sure they are not getting rusty.
Good luck with the new ones.
Nolan

[SSlowBoat]

That's weird, Black Cloud. (That's a nickname that was given to an electrician I used to work with that always had something go wrong with nearly everything he touched).
It's odd that Catmaigne and now you, have discovered that the lifter oil bands are not always in the correct position to work properly in a conventional SBC even though they physically fit dimensionally. I remembered I have a set of used Comp dogbone style lifters that I would give to you if you need them. But it sounds like your new ones are coming today. It also reminded me that I need to check them in the box and make sure they are not getting rusty.
Good luck with the new ones.
Nolan

thanks Nolan. yea we aren't the only ones having the issue. quite a few popping up on fb groups with the morel issue that mike posted.

i don't want to pull the heads, hence why i didn't buy link bar lifters LOL

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[shownomercy]

Anything is possible with some dremel work.

[SSlowBoat]

Anything is possible with some dremel work.

or gen 1 solid short lifters

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[JOATMON]

https://www.ltxtech.com/forums/showt...overhaul/page2
In the photos here you can clearly see that I dropped in Howards tie-bar lifters with the heads on. They are AFR heads, I don't know if stock heads offer less clearance? Post #17 shows the #1 cyl set dropped in.
FWIW
Nolan

[SSlowBoat]

https://www.ltxtech.com/forums/showt...overhaul/page2
In the photos here you can clearly see that I dropped in Howards tie-bar lifters with the heads on. They are AFR heads, I don't know if stock heads offer less clearance?
FWIW
Nolan

do you have a part number? based on the link bar to lifter block boss, those are gen 1 retro rollers and are not normal lt1 +0.300 link bar lifters.

i know my crower solid rollers are the short ones, and if they were the correct lt1 height, they could not be removed with heads on

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[JOATMON]

Yep, They are Gen 1 retrofit lifters part #91160.
Lifter Series:
 Maximum Effort Retro-Fit
Make:
 Chevy
Engine:
 265-400
Lifter Type:
 Hydraulic Roller
Lifter Body Diameter:
 .842
Lifter Body Height:
 +.300
Lifter Intake Offset:
 Center
Lifter Exhaust Offset:
 Center
Lifter Wheel Diameter:
 .700
Lifter Seat Height:
 2.618
Lifter Weight:
 268g
Lifter Crossbar Direction:
 Vertical
Quantity:
 1 Pair
Country Of Origin:
United States