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This time it’s a new Hyd roller lifter.
As the industry moves away from flat tappets, you can’t have too many manufacturers making Olds/Pontiac Hyd roller lifters. Theses are made from both domestic and overseas parts so we’ll see how they do in a thorough test. I have another roller build in line or I may run them in my small block mule. Either way I’ll let you know the results.
Thanks.
Last edited by cutlassefi; Nov 19, 2022 at 05:34 AM.
This time it’s a new Hyd roller lifter.
As the industry moves away from flat tappets, you can’t have too many manufacturers making Olds/Pontiac Hyd roller lifters. Theses are made from both domestic and overseas parts so we’ll see how they do in a thorough test. I have another roller build in line or I may run them in my small block mule. Either way I’ll let you know the results.
Thanks.
Have these been approved by Vortecpro? I bet he's got something better,right? LOL
Have heard about reaming .921 blocks to .937 to use solid rollers of that diameter; any .937 hydraulic rollers out there that can be used in our '66 & '67 .921 blocks?
Have heard about reaming .921 blocks to .937 to use solid rollers of that diameter; any .937 hydraulic rollers out there that can be used in our '66 & '67 .921 blocks?
Have heard about reaming .921 blocks to .937 to use solid rollers of that diameter; any .937 hydraulic rollers out there that can be used in our '66 & '67 .921 blocks?
Hydraulic Cartage Technology is the new Edlebrock?Comp lifter with the removable cartage as seen in the first picture held in with a C-clip.
Right ok.
No this is from another manufacturer. I’ve already used a few sets of the new Comp lifter, seems to work fine.
However the solid cartridge won’t be out until next year. They’re still working on supply of the current Hyd version.
Somebody correct me if I'm wrong. The .921 lifters are ideal for flat tappet use because of the larger diameter and you can be more aggresive with the cam. With the hydraulic rollers it's not that advantageous.
Somebody correct me if I'm wrong. The .921 lifters are ideal for flat tappet use because of the larger diameter and you can be more aggresive with the cam. With the hydraulic rollers it's not that advantageous.
Hmmm kind of. Yes the .921 is the best of the flat tappet family. BUT there are lots of roller profiles that are just as aggressive or even more so.
Hmmm kind of. Yes the .921 is the best of the flat tappet family. BUT there are lots of roller profiles that are just as aggressive or even more so.
No roller , even with the biggest wheel available, can accelerate the lifter as fast as a big dia flat tappet…it’s just not possible. The side loading on the wheel would self destruct it.
the crossover point is somewhere around .175” to .200” tappet lift where it’s possible for a big wheel roller to take over .
the wheel diameter on a roller would have to be something like 4 feet in diameter to allow a roller lobe to smack the wheel with the same dynamics to accelerate the lifter like a big diameter flat tappet.
There are pros and cons to larger lifters. Obviously a smaller diameter lifter could be lighter, but you can also use a larger wheel with a larger diameter lifter which slows down the wheel speed as well and give a degree or two more effective duration.
I have two DX builds upcoming. We just reamed them to use the .937 solid roller offered by Isky, BAM, and others. We’ll see how it does but I expect good results.
This time it’s a new Hyd roller lifter.
As the industry moves away from flat tappets, you can’t have too many manufacturers making Olds/Pontiac Hyd roller lifters. Theses are made from both domestic and overseas parts so we’ll see how they do in a thorough test. I have another roller build in line or I may run them in my small block mule. Either way I’ll let you know the results.
Thanks.
I wonder why Olds didn’t take advantage of their .921” lifter?
No Olds cam needed that diameter..all could be used with .842”
I wish I knew why Olds did a lot of different things. I've never understood why they used 39* & 45* blocks. They used both during the same model year run some years. As far as the .921 lifter goes maybe they were planning on using some better cams but never did. According to some it's irrelevant but it sure helps a guy who wants to run a very aggresive cam.
