[QUOTE=1MOSES1;4446718]What did you rebuild with? I'm thinking going Johnson. Everyone I've talked too recommended them

Went with the lifter gm uses in ZZ572
GMPP- 17120060 kit

Sonic - is that a tall body Crane lifter ? For some reason I have this in the back of my soft mellon.

After some research to refreshen, yes, those (GM# 17120060) are almost certain the long body Crane HR lifters for the Gen VI BBC's.

Question is are they good for 160#, are they a high rpm racing lifter, and where are the tie bars?

No tie bars, these are Gen VI tallbody (for high lift cams) dog bone lifters.

You are correct sir!

Can't help on the first two questions, but they don't use tie bars because they use the stock GM spider and retainers that come with the Gen VI blocks' roller setups. They are similar to the stock lifter, but they have a longer body so that the top edge of the lifter cannot drop below the retainer (dog bone) when it lands on the base circle of the cam. Higher lift cams typically have a smaller base circle, thus the need for the longer lifter body.

Great minds think alike - you just do it by not being long-winded. :)

I have an idea since I think the GENVI ZZ572 lifters are made by Crane and the 525EFI uses the same, does anyone have a used 525EFI lifter they can send me ? I'll buy a ZZ572 lifter, take them apart, and compare. Would love to know for sure.

Thought crane went out of business in 2009? How are they still making parts?

I haven't been able to find the valspring spec on the 572/620, but extrapolating based on the cam specs from Crane/Comps and other cam co's recommended valve spring for similar lift/duration cams, they have to be in the 160ish area closed. The 572 is also rated to 6000 rpm. I have confidence that we made the right choice for my application, I won't see 6000, maybe 53-5400.
After all one of the old "race" lifters decided to eat a cam and go oil pan diving after having never been over 5K rpm. Truth is it did me a favor since mains were down to copper and cranks were scored (sloppy set up)
I would have blown up this year anyway.

Let me see if I can get one from a parts guy I know at trade price.

I've had conversations with the owner of More Power Racing morepowerinc.com several times over the last 25 plus years and he continues to use cranes to this day in all his builds. Even when others seem to capture the market. He claims he's had 0 reasons to change. They do my machine work and dynoing.

They went under. Some stuff got sold off, but the company got bought by I believe S&S cycles. They dropped some products and changed some others.

Anyway, see here, they are alive and kicking: http://www.cranecams.com/

Marine Kinetics posted the spring info somwhere years back when some people where doing transplants into boats and some where breaking valves.

Same lifter used in the Merc 496's.

http://www.offshoreonly.com/forums/g...ring-load.html

Yes. Thanks for the link.

The GM# 17120060 is also AcDelco # HL121.

Well, this doesn't appear so as some of you guys pointed out this is same lifter as in 8.1's.

I just did more lifter digging for another gentleman and seemed to crack the OE dog bone lifter 'code' between GM / AcDelco / GM Performance and Merc (non blue motors).

Read thru 1st page as it took me a few posts and more time digging thru the part #'s to decipher everything.

http://www.offshoreonly.com/forums/d...i-lifters.html

Any fonal word on this story?

Okay, I have been on major lifter # searchinbg this morning.

The Crane lifters used in Merc 500EFI / 525EFI's where the Crane #16535-16 long body lifters for use in GEN VI dog bone lifter (stepnose cam) set-ups. As we know, these have been no longer available, thus why the 'soul searching.'

I just took a look at Crane's latest catalog: http://www.cranecams.com/uploads/cat...%20Catalog.pdf
and on page 122 which shows the larger HR's , shows to use Crane Lifter #26535-16 . The note letter next to the part # says "For use with standard GM alignment bars (dog bones) and having greater than stock lobe lift."

Reason was hard to find not using the current catalog is that Crane uses these as replacement hr lifters for the 8.1/496 engine and some suppliers list these as just that.
On Crane Catolog page #91 Crane states under the heading "2001–2008 8.1L (Vortec 8100) V8" that "Due to the relocated lifter oil galleries, different lifters are
required. We offer our steel billet bodied 26535-16 hydraulic roller lifters for use with the factory alignment bars to allow the use of higher than stock lift camshafts. "

Appears Crane consolidated part #'s by making these fit for GEN VI 454/502 etc with high lift cams and for the 8.1/496's.

Problem: very pricey ! But, the $$$ spread from retailers is huge.

So, with pretty good confidence, Merc #849947T01 lifters used in the Gen VI 500EFI,525EFI now uses Crane #26535-16 instead of the old Crane #16535-16.

I'm gonna try to organize all this damn lifter info I just dug up and post it up probabably on it's own thread so it can be referenced better.

ooops. Duplicate.

Here is an update. Engines were both torn down last week. The morels will be sent back for warranty claim then posted for sale.

For the new build I went with the scorpion scp4014 roller rockers and Johnson 2126bbr lifters. Both just came in today. They are going to the mechanic tonight and he will start setting up geometry over the weekend. Hopefully old push rods work. If not I will be overnighting new ones. Hoping to be on the water next weekend.

Welp the old push rods didn't work. So the ones I had in there will be for sale shortly. They are Manton 0.120 wall. I'll have to measure length. Ended up ordering new comp cam hi tech push rods 0.135 which I'm told is made by trend.

As an aside anyone use the scorpion scp4014 marine rockers. They are beefy as hell. Just want to make sure they fit under stock valve covers. I'm thinking they should. Merc now uses them in there new blue motors.

Thanks.

Interesting good luck

hopefully will work out..what a bunch of crap...anyway I used stock GM lifters on a 500hp(carbed) for 5 years no noise, no issues..

Yep, I'm another 3k out of pocket.

It seems like the harder you try to do things right the more things can go backwards. Best of luck!

My gf reminds me of that weekly.

"Why did you touch the damn thing. It was running fine to begin with".

"Because someone on the Internet has a faster boat!" Lol

Kinda like painting. Just paint it like a wheelbarrow and it turns out great. Take every step and precaution and go by the book amd something always goes wrong. Lol

Boat all back together now. Ran her yesterday, everything was perfect. No ticking and a smooth idle. I think this saga has come to a close. Thanks for all the suggestions and responses.

Just read this complete thread, SB had a lot of input ( as usual ) so whats the final final ??

Crane #26535-16 = 880 bucks...........

$735 various places.

I thought some people have used the $30 each GM Performance Parts GM# 17120060 lifters that came in the ZZ572/620 engine with large Crane Cams HR ?

BTW: I never looked to see if there is a Part# (and cheaper) for a package of 16 X # 17120060 lifters.

looks like the AC delco HL121 is the same ?

I was just looking at those too. The ZZ572/620 engine has a .632" lift cam and if the GMPP catalog is correct the springs are almost 200lbs seat pressure ???? I think that is what I am going to recommend to my customer I mentioned in the other thread I started this morning.