:
Best value hyd roller lifter? ls7?
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
I stayed with the stock GM lifters in the recent cam and heads swap I did.
A guy on another Forum just did a cam swap and ended up with much lower oil pressure using CompCams lifters. He's still trying to figure out what caused it, but all he changed was the cam, lifters and pushrods. I suspect the lifters.
A couple of guys recently posted that their Pro Mag RRs self destructed. Posts are complete with photos. One had the roller tip come off and the other had the trunnion break and the roller bearings fell inside the engine. Just for your info.
Jake
West Point ROCKS!
A guy on another Forum just did a cam swap and ended up with much lower oil pressure using CompCams lifters. He's still trying to figure out what caused it, but all he changed was the cam, lifters and pushrods. I suspect the lifters.
A couple of guys recently posted that their Pro Mag RRs self destructed. Posts are complete with photos. One had the roller tip come off and the other had the trunnion break and the roller bearings fell inside the engine. Just for your info.
Jake
West Point ROCKS!
Race Director
Joined: Nov 2003
Posts: 12,220
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
GM part# 12499225 is the one I've seem posted most often. They are about $75-$100 less than other replacement hydraulic roller lifters for our cars. IIRC, they are for LSx and L98 cars. They may have a different height but it won't matter if you're measuring for new push-rods anyway.
Jake, I'd like to see/hear where the posts are about failed ProMag RR's. I've not heard of that and I'm planning on purchasing them this week. It's my understanding that they are about the strongest roller rocker out there. What rpms where they being run? Was valve trane geometry correct? etc... etc...
gp
Jake, I'd like to see/hear where the posts are about failed ProMag RR's. I've not heard of that and I'm planning on purchasing them this week. It's my understanding that they are about the strongest roller rocker out there. What rpms where they being run? Was valve trane geometry correct? etc... etc...
gp
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
LS7 lifters .About $130 / set online.
Supposed to be good for 7000 rpm
The 2nd Gen LT1 lifters (GM #17120735) are running about $40 each
Last edited by rodj; Jul 28, 2009 at 03:58 AM.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 195
From: folsom california
replaced cam in my 96 lt4 with an lt4 "hot cam"; used gm "second generation lifters" pn 17120735 factory installed in late model 350 HO engines; got entire kit including new lifters , lifter guides, and lifter retainer (aka spider) in kit pn 12371042, from the dealer, for $297.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
GM Direct , SDPC ,Pace and Summit still list them ; whether they are on the shelf is a different story.
Summit price $51 ea
As mentioned above you can buy the whole roller conversion kit from Pace , Summit , Jegs (GM # 12371042 ) w/ lifters / dogbones / spider for $220
Summit price $51 ea
As mentioned above you can buy the whole roller conversion kit from Pace , Summit , Jegs (GM # 12371042 ) w/ lifters / dogbones / spider for $220
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Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
That is interesting. Judging by the internet, I thought I was the only person in the entire world who had a set of Comps Stainless Rockers go to crap in short order.
To the OP-
As for the best hyd roller lifters for the money... I'd recommend you do what Jake did. If the 16 lifters in your current engine are not damaged, I'd re use them. Nothing is gonna be a better deal than free.
If you feel like you have to buy new, the GM LS7 lifters are pretty good and less than $150.00 from anyone.
To the rest of you throwing around the "GOOD TO 7000RPM" comments... What X lifter will turn (RPM wise), on X cam lobe, with X valve springs, X weight retainers/locks, X brand rocker arm that is X ratio, and X diam/length/weight pushrods all on top of it.... may or may NOT be 7000RPM.
Will
Last edited by rklessdriver; Jul 29, 2009 at 01:55 PM.
Team Owner
Joined: Oct 2004
Posts: 81,241
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From: altered state
St. Jude Donor '05
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Installed a set of these: http://www.summitracing.com/parts/NAL-12371042/ for $220 on my '89 build. No problems so far.
Team Owner
Joined: Oct 2006
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17
NCM Member '09
Race Director
Joined: Nov 2003
Posts: 12,220
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Wow... In a mere 10 posts, 3 Comp products were slammed: Pro Mags, Stainless rockers, and lifters. What's the world coming to?
