#Yella terra rockers ls1 mod

I'm just not sure if I will go with a DOD cam or not. I will still do a cam swap in the future. These rockers do fit under the stock valve covers with no problems. Unfortunately, he never did back to back testing so he never knew what kind of gains the rockers alone gave him. It's in his sig.Yes, I remember seeing that. So if you're looking to gain 13rwhp without swapping cams, the Yella Terra 1.85 ratio rockers are an excellent way to boost the power of your L92/L76/L99/LS3 engine without opening up the motor.Р”Р‡WIW: G8-4-Speed went 13.06 with some 1.85 Rockers and HPTuners on stock RSAs. The Yella Terra rockers also require a longer 7.450' pushrod to keep the valvetrain as quiet as stock. We swapped some Comp 26918 beehive springs and the curve was beautiful. We ran into valve control issues at 5400 rpm with the stock springs. The heavy solid stemmed intake valves of the L92 heads did not like running the high ratio rockers with a stock valve spring.

#Yella terra rockers ls1 mod

While this is a very easy mod to install, it does require a couple of other items. This helps pump up the overall power under the curve. Interestingly, both the power and torque peaks with the high ratio rockers occurred at lower rpm, but carried the power better at higher rpm. 514/.516' cam.Р”Р‡or those who can't read the dyno chart, peak power increased from 342rwhp to 355rwhp (a gain of 13rwhp) and torque peak increased from 355rwtq to 362rwtq. This small but noticeable increase in lift will get the large intake valve further away from the cylinder wall plus into a position where it flows more air. The 1.85 rockers would effectively increase the lift at the valve from. All AFM motors are saddled with a very small 200/208. The test engine was a 2009.5 G8 GT with a 6.0L L76 engine with active fuel management (DOD).

But instead of a cam swap, I wanted to see how much power I would pick up just by swapping some higher ratio rocker arms to increase the lift at the valve. This has been proven time and time again. The Gen IV rectangular port GM heads really respond to lift.