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#1
11-14-2010, 04:23 PM
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Best lifter alternative to pro-magnums
was running the comp 863 pro-magnum lifters.......found two with the push rod plunger retainers broken after 5yrs of service.......
really dont want to chance that the remaining ones are gonna hold.......whats the best alternative lifter????
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
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#2
11-14-2010, 04:40 PM
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Having had issues with Comp lifters out of the box several years ago I went to standard Crowers with no issues 6 years now running unknown springs but clearly intended for a solid no less. Back in the "old days" I never had issues with Crane Erson Crower Rhoades and first set of comps 3 lifters wouldnt fill with oil and pump in a jar let alone make it to my engine. Warranty set had issues as well and I sent them back for a refund. Yes that was near peak of hydraulic cam lifter failure period and may be corrected at this time but I'm leary of Comp lifters now.
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#3
11-14-2010, 05:29 PM
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Well,that's kinda why I go to solid cams/lifters for anything over appx. mid 230ish duration @ .050".
It's not that big hydraulics wont "work" at all. It's just that bigger hydraulic cams tend to see more time in a higher RPM range as that's where those cams are meant to run,and that sorta RPM range is exactly where problems with hydraulic lifters start becoming a far more common occurence. So,should I expect the combo to regularly see over say 5200 to 5500 RPM,I tend to go to a solid as SOP. I've seen more hydraulic lifters "spit their guts out" than I care to mention. AFAIK no brand/type of hydraulic lifter is completely immune to that phenomenon. Some may be a little better than others,,,but I dont like to take chances very much... Last set of hydraulic lifters I bought were Johnson/speed-pro,and those were purchased over 10 years ago for another combo and never used,so that was back before all the "lifter drama" happened. Those lifters were bought for a mild 9:1 455 with a crower #60210 cam,that engine combo was meant for strictly under 5200 RPM use as it's an all cast bottom end. I plan to go thru that engine someday down the road,and when I do it'll get forged rods & pistons,and a Crower #60311 solid cam. I'll probably put a little more gear,converter & tire in it then too,right now it has 2400-2600 converter and 3.23's with 235-60-15's,and I'd probably go to 2800-3000 converter & 3.42's with 275-60-15's. Anyhow,I digress. So my vote would be to go with a solid cam & lifters and forget about those issues. FWIW Bret P. |
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#4
11-15-2010, 09:20 AM
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Were the retainers steel wire, sheet steel, or C-rings?
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#5
11-15-2010, 10:40 AM
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Why not just run a set of Sealed Power std lifters. Valve springs create 90% of valve train issues.
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#6
11-15-2010, 11:15 AM
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Agree with SC and think you would be a whole bunch happier with a solid.
Solids are simple reliable and can be relatively quiet too. Still regret not putting a solid in my wifes car back when I did the cam. Not that I'm unhappy with the Crower 60916 hydraulic but I'm pretty certain I could do a solid that would out perform it EVERYWHERE. |
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#7
11-16-2010, 05:52 PM
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Forget about hydraulics, flat tappet hydraulics are best for the history books. Your engine will idle better and run stronger with a solid lifer cam so why bother with hydraulics.
Tim C
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Tim Corcoran |
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#8
11-16-2010, 10:05 PM
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dont even have to change the cam
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#9
11-16-2010, 11:02 PM
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went with the Rhoads vmax lifters.....
__________________
71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
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#10
11-17-2010, 11:02 AM
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From what I remember my old Pro Comps had a stamped steel one way clip-not a wire or snap ring.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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#11
11-17-2010, 01:34 PM
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Quote:
 They actually make the cam act like it is advanced increasing cylinder pressure, not sure where u are at now with your cam?
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,[email protected]@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, [email protected] [email protected] M/T 275/60 ET SS Drag Radial 2024(Pontiac 505) 1.25 60 ft, [email protected], [email protected].... 275/60 Radial Pro's |
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#12
11-17-2010, 10:47 PM
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the Rhodes make more noise than solid lifters but they may help your low end torque if you have a big cam
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Tim Corcoran |
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#13
11-17-2010, 11:37 PM
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Quote:
A PROPER choice of Solid cam WILL IMPROVE your low end torque and make more top end power and more often than not run quieter than Rhoades lifters!!!! The WRONG choice of any cam gets you poor results plain and simple. You cant expect a solid cam with only 269/277 advertised duration 240/248 at .050 cam lift 112 LSA 108 ICL, dont care how much lift, to out power a 60919 with RHOADES lifters either on a well sorted 455 combo. |
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#14
11-18-2010, 01:29 AM
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Quote:
 Yeah,I could make a comment or two on that deal,but I REALLY dont need the aggravation and ridicule that almost certainly would follow said comments.  Bret P. |
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#15
11-18-2010, 02:45 AM
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Quote:
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#16
11-18-2010, 05:20 PM
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The one time I ran Rhoads they were noisier than the solid roller I ran.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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#17
11-18-2010, 09:48 PM
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LOL yeah i couldn't handle the noise of Rhoads myself
I like just putting the right cam in the first place and if you want to tune with a camshaft go with a solid cam, its fun running lash loops to get down the track quicker, if any of you guys need help getting a Hydraulic cam to work OR any other cam/ valvetrain setup feel free to give me a shout! Derek
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D.S.R.E. Your NW Pontiac Street/Strip Engine Builder, Specializing in Cylinder Head,Intake Manifold,and Exhaust Manifold Porting services and Building the Most Efficient stock rebuilds to Hi HP Pump Gas and Race Combinations for Pontiac,Buicks,Olds,FE Fords,385 Series and HP Gen 3 and 4 LS engines! 2006 silvy Z71 4X4,383 LS 600+hp NA Shared Toy-66 Lemans 470cid by me 537hp 580tq-manifolds, 570hp 590tq-2"headers,custom cam,rpm intake, mild e-heads, Looks stock ;-} |
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#18
11-18-2010, 10:27 PM
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you guys ran the vmax or the original??........my intent was not to change my cam.....just looking for a good quality lifter.......if I can gain a little low end power and enhanced vacuum, all the better...
I was also inspired by Jim Hands recent post ......Judging from his performance, Hydraulic cams can still perform very well indeed.. I will report my observations.......
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
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#19
11-19-2010, 12:02 AM
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Not to hijack this post but are the comp 852 lifters junk i have a set still in the box from a year ago, they have the steel wire retainers ? thanks jess
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1978 ,t/a 3660# 455 2010 / 1/8 7.86 1/4 12.40 @ 109,19 http://www.youtube.com/watch?v=6PaHbLnszS0 http://www.youtube.com/watch?v=XMxhM...eature=related 12.01@109 http://www.youtube.com/watch?v=MC-dganA2jQ 100 shot 11.78. A,ll new head cam combo 96 ported bye Mike Chell!! Comp cam yes the 284 XE. Firsthand outing of the street 7.69 1/8 12.15 109.47 hot and humid.not hooking. 1.73 60. |
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#20
11-19-2010, 01:47 PM
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done with installation........lashed lifters to .015 (the vmax lifters lash like solids)........not obnoxious at all....
....idles better.....vacuum signal to carb much better... 4" more vacuum....pulls HARD on top end and has loads of torque on the bottom end..... two thumbs up for the Rhoads vmax lifters..
__________________
71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
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