Mercier

iTrader: (15)

I just got a Jeg's catalog in today..they are advertising a rocker for LS for about $374 in 1.7 or 1.8. Anybody know anything about these?

JakeFusion

iTrader: (7)

Not to knock Jegs, as I have run a lot of their stuff over the years, but I'd steer clear of LS rocker arms from them. They might be made by Harland or Scorpion for that price, but if it's anyone else, who is it? Building a decent aluminum bodied rocker for a low price has been a bit of a unicorn for years...

Mercier

iTrader: (15)

Only $30 cheaper than Scorpion or HS.. Kinda expected Jeg's to offer more of a price differentiator unless they were to "leak" that they are actually re-badged versions of a known-good design.

http://www.jegs.com/i/JEGS+Performan...20150/10002/-1



Think I am going to get the trunion kit and try my luck there. Maybe by the time I start seeing valve wear I'll have recovered from the build $$ wise and get valves and some RRs.

dr_whigham

iTrader: (49)

I'd personally run the Scorpions, based in Florida, and enjoy the lifetime warranty.

JakeFusion

iTrader: (7)

I saw someone on here... maybe Erik @ HKE saying he had seen like 4 returns on YTs over the years but in the 10 Scorpions he used, like 6 were returned broken. He said they were super light, which probably contributed to them exploding. I believe that was pre-redesign.

99Bluz28

iTrader: (35)

IMO, stock rockers and trunion upgrade get my vote!

dr_whigham

iTrader: (49)

Exactly. Before the redesign. I don't remember... Maybe 2010 or so they were THE WORST for breaking, right at the PR cup.

I haven't seen a new revision break yet. I do however like knowing if it DOES, I literally have a direct phone number to the president of the company. Again, American made.

But yes, I'd go stock trunion upgraded first, unless I just couldn't for whatever reason.

Always2Slow

iTrader: (8)

Everyone knows stock rockers upgraded can be viable on many builds, but there are other options that tend to have a better wipe pattern on valves if the proper care is taken.

Paul Bell

iTrader: (9)

I was gonna use the stock rockers with the BTR trunnion upgrade kit until I saw the ".638" on my cam card. Honestly, if it was no more than like .580, I woulda stayed stock.

Having said this, the Crower rockers are a serious piece of manufacturing artwork and I'm certain it's a better rocker then any other at any lift.

4WOFURY

iTrader: (2)

Without spending $1k, it's looking like trunion upgrade is the way to go. Car has been running stock rockers with stock trunions for 35k and 6.5 years as is, with countless track passes. Just felt like it was time to put something a little nicer in there, but can't justify $1k for it heh.

Thanks for the input everyone.

Sales@Tick

iTrader: (3)

I love those Crower rockers. I use the stainless and the aluminum often in high RPM race applications and hot street/strip applications where it's needed.

TurboBuick6

iTrader: (2)

I run stock rockers with .650 lift. 145 seat and 410 open. over 10,000 miles on the setup and its a DD that I will drive over 300 miles one way to events. My pedistals have been milled to change the geometry by Dennis Wheet at AFD.

99Bluz28

iTrader: (35)

IMO, you have to pick your poison ( poor wipe pattern, nose heavy, poor/questionable durability, or high cost) !. Can you guess what most will pick, like I did?

I'm very aware of getting a better wipe pattern with roller rockers, but I've tried on more than one occasion with YT 6645 non-adj. rockers and found out the hard way I 'd prefer to sacrifice a better wipe pattern for rockers I feel I can trust not to break!
I looked hard for a good RR option, and considered the Comp Cams Ultra Pro Magnum until I realized they were only offered in a 1.8 RR, and I couldn't find any info that would have me believe the nose weight was as least no more than with the stock rockers.

Always2Slow

iTrader: (8)

It's going to be more, but if you setup a valvetrain properly and run quality lifters with more spring pressure you can have the best of both worlds. In an all out racing application you could run the stockers and not care about durability. Majority of builds on here seem like street strip builds that people want to drive to the track make some passes and drive home. I would think in that instance durability would matter the most to me. The 1.8RR isn't as bad as people make it. Comp offers plenty of stable lobes you could run with them to keep the valve train in control. With all the advancements in technology I don't see any reason besides cost to not run a roller rocker. Even to get the most out of the stockers your going to want light valves, quality springs, and high end lifters with stiff pushrods. With the listed parts you can rev a roller rocker pretty high. There is power in having nice tight guides with a great wipe pattern. Your valve job will thank you as well. Now if you go all out and get the crower setup its even better because of the lower RR ratio, which you can have the lobe do more of the lifting for more stability.

HioSSilver

iTrader: (8)

I run Harland Sharp roller rockers on my junk. I have used 1.7's and 1.8's on the same engine. I noticed that the engine seems to run smoother at high rpm(6300+) with them.

BAD2000TA

iTrader: (6)

Surprised no one has mentioned the set-up I used: stock rockers with an upgraded trunion by CHE Precision. I've had no problems. Seems more popular on the Corvette forum, for some reason.

dr_whigham

iTrader: (49)

Wow, the price though...

CarlostheBarbarian

I run them too. Great set up.

Jontall

The CHE Precision upgrade is over $500.

CarlostheBarbarian

$420 if you send yours in...but your not gonna find any failures. Not saying the Comp set up is bad, i know their issues are fairly rare but the CHE's were worth a couple hundred bucks to bulletproof my valvetrain IMO(HCI).