Hydraulic vs Mechanical Roller
Drifting
Joined: Dec 2004
Posts: 1,321
Likes: 0
From: Edgewater (20 miles south of Daytona) Florida
Timely INFO
Just got my latest issue of Popular Hot Rodding, and they have a HUGH article in the September Volume 45,No.9 issue about comparing solids, hydralics, flat tappet, springs, etc and hugh figures of results from test on Comp Cams' Spintron. This is the latest info and updated results on all the subject, including Rhodes lifters, GM and aftermarket beehive springs, ramp speeds, side thrust loads, everything. Very, very good stuff.
Their website: www.popularhotrodding.com
You can probably find the article on it if you don't want to buy the mag, but trust me, you want to keep this info : bigears
SORRY! Just checked their website, and that article is NOT posted as of now. Probably will wait until after the magazine has been on the rack for a while. Just go out and buy one, or borrow one from a friend.
Their website: www.popularhotrodding.com
You can probably find the article on it if you don't want to buy the mag, but trust me, you want to keep this info : bigears
SORRY! Just checked their website, and that article is NOT posted as of now. Probably will wait until after the magazine has been on the rack for a while. Just go out and buy one, or borrow one from a friend.
Last edited by Glenn"Mr.Blue"Smith; Jul 25, 2005 at 01:43 PM. Reason: Error in info
Thread Starter
Burning Brakes
Joined: Feb 2003
Posts: 1,218
Likes: 0
From: Rolla Mo
A new question after reading the article....
AWESOME READING!!!!
I just picked up a copy today at my local parts store! So hydraulic with the Beehive spring sounds like the way to go! Good thing as that is what I asked to have installed on my new heads! This opens up a new question for me though..........
Are all hydraulic roller lifters basically the same? i.e. is there a significant difference between stock and aftermarket lifters?
I just picked up a copy today at my local parts store! So hydraulic with the Beehive spring sounds like the way to go! Good thing as that is what I asked to have installed on my new heads! This opens up a new question for me though..........
Are all hydraulic roller lifters basically the same? i.e. is there a significant difference between stock and aftermarket lifters?
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
I run a hydraulic roller in my LT4 engine. It works great to ~7000 rpm after I solved some valvetrain issues. The main one being a switch to the 26918 CC Beehive springs. I also run a Hydrarev Rev Kit, but am unsure how much that helps.
I also have used OEM lifters and Comp Cams Pro Magnum lifters...but can't say if I detected any difference...they were in different combinations so...some have had the CC lifters fail, but why no one is really sure-possibly poor valvetrain adjustment...mine have worked flawlessly for last 15,000 miles at 775 rpm idle, 1100 rpm cruise, as well as 4000-7000 for 20 minutes on a road course-this is true for the beehives as well.
Vizard is quite a supporter of these springs...I like them.
By the way, my camshaft is a GM part...'847' .575/.595 lift and 296/304 duration for intake and exhaust respectively.
I also have used OEM lifters and Comp Cams Pro Magnum lifters...but can't say if I detected any difference...they were in different combinations so...some have had the CC lifters fail, but why no one is really sure-possibly poor valvetrain adjustment...mine have worked flawlessly for last 15,000 miles at 775 rpm idle, 1100 rpm cruise, as well as 4000-7000 for 20 minutes on a road course-this is true for the beehives as well.
Vizard is quite a supporter of these springs...I like them.
By the way, my camshaft is a GM part...'847' .575/.595 lift and 296/304 duration for intake and exhaust respectively.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
The torque "curve" on my sub 5000RPM dyno pull has me sold on a solid roller cam. Before anyone asks, the I had already blown my oringinal SuperT10 the first day I put the new 406ci in and was not even going to dyno the car that day with a replacement Super T10 but I decided to do one pull anyway.
THe torque only chages about 40 ft/lbs from 2000-5000RPM you can't get that in a small block with any other type of cam. I will a use solid roller cam in any future motor I build, I have 10,000 street cruising miles on my motor now without a problem. I love the cam !
THe torque only chages about 40 ft/lbs from 2000-5000RPM you can't get that in a small block with any other type of cam. I will a use solid roller cam in any future motor I build, I have 10,000 street cruising miles on my motor now without a problem. I love the cam !
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Originally Posted by MotorHead
The torque "curve" on my sub 5000RPM dyno pull has me sold on a solid roller cam. Before anyone asks, the I had already blown my oringinal SuperT10 the first day I put the new 406ci in and was not even going to dyno the car that day with a replacement Super T10 but I decided to do one pull anyway.
THe torque only chages about 40 ft/lbs from 2000-5000RPM you can't get that in a small block with any other type of cam. I will a use solid roller cam in any future motor I build, I have 10,000 street cruising miles on my motor now without a problem. I love the cam !
THe torque only chages about 40 ft/lbs from 2000-5000RPM you can't get that in a small block with any other type of cam. I will a use solid roller cam in any future motor I build, I have 10,000 street cruising miles on my motor now without a problem. I love the cam !
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Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I used the Comp Cams "818" lifters, the trick is not to let it idle too long, I blip the gas at a stop light all the time, people in family wagons think I want to race them 
There are better lifters, I don't have any opinion because I have only used the Comp lifters and I will pull the intake in a month or so an see how they are holding up after about 10,000 miles. Rumour has it that Comp had added holes for direct oiling of these lifters but I don't know about that for sure
There are better lifters, I don't have any opinion because I have only used the Comp lifters and I will pull the intake in a month or so an see how they are holding up after about 10,000 miles. Rumour has it that Comp had added holes for direct oiling of these lifters but I don't know about that for sure
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I used the Comp Cams "818" lifters, the trick is not to let it idle too long, I blip the gas at a stop light all the time, people in family wagons think I want to race them
There are better lifters, I don't have any opinion because I have only used the Comp lifters and I will pull the intake in a month or so an see how they are holding up after about 10,000 miles. Rumour has it that Comp had added holes for direct oiling of these lifters but I don't know about that for sure
Edit, I just looked at their website and it says * Now with pressurized oiling
There are better lifters, I don't have any opinion because I have only used the Comp lifters and I will pull the intake in a month or so an see how they are holding up after about 10,000 miles. Rumour has it that Comp had added holes for direct oiling of these lifters but I don't know about that for sure
Edit, I just looked at their website and it says * Now with pressurized oiling
