Re: Cam and roller Lifter suggestions
[Re: relax383]
#1499510
09/10/13 11:33 AM
09/10/13 11:33 AM
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Joined: Mar 2006
Posts: 9,910 Eighty Four, PA
B G Racing
master
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master
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
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Quote:
My 70 RR is almost finished. have a 440 engine topped with edelbrock heads and a six pack setup. I want to swap in a hyd roller cam. I want torque to be about 475-500. Any suggestions? Also what roller lifters do you guys recommend?
With all the issues we have seen with hyd.roller lifters we quit using them.
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Re: Cam and roller Lifter suggestions
[Re: relax383]
#1499512
09/10/13 02:58 PM
09/10/13 02:58 PM
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Joined: Oct 2007
Posts: 288 Birmingham, England
Mick70RR
enthusiast
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enthusiast
Joined: Oct 2007
Posts: 288
Birmingham, England
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Don't buy Comp hydraulic roller lifters. Mine lasted a few months. One by one they would collapse and rattle for a while then start working again. The last one to go just wouldn't pump back up. I pulled the lifters and took them apart. The metering plate under the pushrod cup had shattered on several lifters. A small piece of this plate would jam the valve open until it eventually worked it's way past the valve to the bottom of the lifter. The valve is another plate, unlike the lifters in the video Comp have on YouTube which show a ball valve. Comp Cams won't answer my emails.
1970 Road Runner
505 cid
MCH CNC ported Stealth heads
MP 528 camshaft
4 speed
GV overdrive
11.98 @ 117 on street treads
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Re: Cam and roller Lifter suggestions
[Re: Mick70RR]
#1499513
09/10/13 05:18 PM
09/10/13 05:18 PM
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Joined: Jan 2003
Posts: 5,486 SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,486
SoCal
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We use Morel and have Comp grind our cams with the lobes WE pick. The correct lobes/springs are a must for proper valvetrain control. Brian
Brian Hafliger
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Re: Cam and roller Lifter suggestions
[Re: 68 HEMI GTS]
#1499516
09/11/13 07:22 AM
09/11/13 07:22 AM
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Joined: May 2011
Posts: 101 NC
1967Valiant
member
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member
Joined: May 2011
Posts: 101
NC
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Ok let me start this way. If you are compentent, yes a hyd roller can go 7500 ask IMM. The problem with Moparts we have a bunch of people that think they know everything and I would not let them work on my lawn mower. That's the problem people listen to them and get bad info.
So take some time buy something else other than purple cams, spend some money and time yes a BBM will turn 7500 with hyd roller. Wait no it won't if you listen to most people and spend fours dollar on the valve train.
Sorry if a just butt hurt a lot of people, but truth is truth.
Last edited by 1967Valiant; 09/11/13 07:24 AM.
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Re: Cam and roller Lifter suggestions
[Re: 1967Valiant]
#1499517
09/11/13 09:59 AM
09/11/13 09:59 AM
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Joined: Jan 2003
Posts: 1,240 Saline, MI
efisixpack
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,240
Saline, MI
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Who makes hyd roller lifters out of tool steel? Last time I asked Morel they said they didn't. It was a year ago though. I'm running crane on a comp can with no issues. Unfortunately I do have other issues with the motor though, but not can/lifter related.
When I die I want to go like my Grandfather did, quietly in his sleep. Not screaming like the passengers in his car.
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Re: Cam and roller Lifter suggestions
[Re: 68 HEMI GTS]
#1499519
09/11/13 11:07 AM
09/11/13 11:07 AM
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Joined: Jan 2003
Posts: 10,016 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,016
Frostbitefalls MN (Rocky&Bullw...
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Quote:
Quote:
Sounds like you need to do some research on hyd roller lifters. Because you must buy junk. They make a tool steel hyd roller lifter that's good to 7500 with no float.
id like to see dyno proof of a big block mopar that can make power to 7500 with a HR.
There are BBC motors running over 7,000, sold for fast brackets making 1,000 hp with a juice roller. The Mopar camp is behind on what is available and what works, in a lot of cases. Take a look at what can be done to lighten the load in the valvetrain, and that would be worth a lot of rpm over what the average guy tries to throw together to run a juice cam.
Last edited by gregsdart; 09/11/13 11:16 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Cam and roller Lifter suggestions
[Re: 1967Valiant]
#1499524
09/11/13 01:52 PM
09/11/13 01:52 PM
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Joined: Dec 2009
Posts: 20,662 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,662
in a cattle trailer down by th...
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Hmm, so you're a paramedic and Bob is a what? I forget...
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Cam and roller Lifter suggestions
[Re: skrews]
#1499528
09/11/13 02:33 PM
09/11/13 02:33 PM
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Joined: Jan 2003
Posts: 9,888 Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,888
Weddington, N.C.
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Mine Have been good to 6800+, hit 7200 a few times and feels like it could go higher. But If I'm shooting for 7500 my thoughts are why wouldn't you go with a lighter Solid Roller? i learned a lot about HR's from the mid 90's tuning on the Pro 5.0 type set ups where you had to run HR by class rules. Bullet was on the front line of that market and were always putting out new grinds to try back then.
Careful attention to valvetrain geometry and a very stable shaft foundation (my heads run a W2 style billet blocks instead of as-cast pedestals) I think helps a bit. And the Bullet desined HR lobes combined with the early (pre Chapter 11) Crane Lifters have worked very well for me is all I can say. I'm running long 11/32" stem x 2.25" intake valves which I think are lighter than the 2.14" x 3/8" stem mopars (the only BBM I can compare to from expereince).
But if Bob is saying there are issues I have no doubt there have been issues.
Last edited by Streetwize; 09/11/13 02:39 PM.
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