Lets talk about rocker arms
I'm also running the Yella Terra Non Adj Shaft Mounted Roller Rockers. I bought them when I upgraded to the TR224 as a safety precaution as I didn't want needle bearings circulating inside my LS1. They fit perfect under the stock valvecover with no modifications needed. After install I noticed the valvetrain was much quieter than with the stock rockers and it did rev quicker. As to power gain? Well I couldn't feel any other than the quieter motor and faster reving engine.
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
What would cause the engine to "rev" quicker? If it added 5 RWHP (which would be just better than a 1% increase in the case of a 400 RWHP engine) do you think you could actually feel it rev quicker?
TECH Fanatic
Joined: Nov 2001
Posts: 1,248
Likes: 0
From: Kansas City, MO
The "butt-dyno" causes more problems that anything.
As you were stating Colonel, 1-2mph is well within standard variations. People tend to give credit to anything that they want to believe. If you spent $400 on a set of rocker arms, you really want to believe that it helped or changed something significantly.
As you were stating Colonel, 1-2mph is well within standard variations. People tend to give credit to anything that they want to believe. If you spent $400 on a set of rocker arms, you really want to believe that it helped or changed something significantly.
Colonel...I understand what your saying and maybe the better word to use would be the engine seemed to rev "smoother" than with the stock rockers. The addition of the YT's did noticeably quiet the sewing machine sound associated with Cammed LS1s so probably the feeling of the engine reving quicker came from that increased quietness. As to a power gain, I felt none but I now don't have to worry about the needle bearings circulating inside my engine. Thats well worth the price for me.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo TECH Fanatic
Joined: Nov 2001
Posts: 1,248
Likes: 0
From: Kansas City, MO
Originally Posted by PREDATOR-Z
Hmm, this is guetting similar to stock timming chain VS aftermarket.
I'll never argue with replacing a timing chain when you're already in the motor. Costs about $100 and it is a no-brainer.
