ZZ632 Roller Lifters

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HDBD
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ZZ632 Roller Lifters

Post by HDBD »

Wondering what lifters GM used for this engine.
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Alaskaracer
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Re: ZZ632 Roller Lifters

Post by Alaskaracer »

I'd be willing to be Johnson lifters.
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HDBD
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Re: ZZ632 Roller Lifters

Post by HDBD »

I am curious what is the part number. Well over .700 lift and 6600 rpm with heavy valves etc.
bob460
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Re: ZZ632 Roller Lifters

Post by bob460 »

HDBD wrote: Fri Dec 02, 2022 11:00 am I am curious what is the part number. Well over .700 lift and 6600 rpm with heavy valves etc.
It's got titanium valves and beehive valve spring .780 lift.....well designed crate engine.
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Re: ZZ632 Roller Lifters

Post by rebelyell »

bob460 wrote: Fri Dec 02, 2022 6:21 pm
HDBD wrote: Fri Dec 02, 2022 11:00 am I am curious what is the part number. Well over .700 lift and 6600 rpm with heavy valves etc.
It's got titanium valves and beehive valve spring .780 lift.....well designed crate engine.
Do ya know what type of retention system for ZZ632 roller lifters? --- OE production-type BBC/sbc dogbones & spider? --- Or linkbars? --- Or keyways? etc etc ?
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Re: ZZ632 Roller Lifters

Post by bob460 »

rebelyell wrote: Sat Dec 03, 2022 6:17 pm
bob460 wrote: Fri Dec 02, 2022 6:21 pm It's got titanium valves and beehive valve spring .780 lift.....well designed crate engine.
Do ya know what type of retention system for ZZ632 roller lifters? --- OE production-type BBC/sbc dogbones & spider? --- Or linkbars? --- Or keyways? etc etc ?
Linkbars i would think, have emailed a few that sell the crate engines asking for more details, but no reply............It sucks when you get no reply back from companies. I've sent about 20 emails, and the only one that responded was PSI valve springs, and answered my question within 2 days.
rebelyell
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Re: ZZ632 Roller Lifters

Post by rebelyell »

bob460 wrote: Sun Dec 04, 2022 6:47 pm
rebelyell wrote: Sat Dec 03, 2022 6:17 pm
Do ya know what type of retention system for ZZ632 roller lifters? --- OE production-type BBC/sbc dogbones & spider? --- Or linkbars? --- Or keyways? etc etc ?
Linkbars i would think, have emailed a few that sell the crate engines asking for more details, but no reply............It sucks when you get no reply back from companies. I've sent about 20 emails, and the only one that responded was PSI valve springs, and answered my question within 2 days.
I agree with your sentiments.
I found an article on ZZ632 with pics --- seems lifter retention is via what appears to be typical OE BBC dogbones.
https://www.chevyhardcore.com/tech-stor ... C600%20rpm.

lifter part number --- seems it's in the linked ZZ632 crate deluxe specs --- it's in there --- reads 19432401---whatever that is
https://www.chevrolet.com/content/dam/c ... rZZ632.pdf
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