New camshaft kits from COMP Cams® modifies L92 cam phasers provide significant gains in upper-rpm power without hurting bottom-end & mid-range performance. Rather than find ways around the recent advances in GM engine technology, engineers at COMP Cams® have found a way to work with the innovation to produce a powerful line of cams for the newer L92 engines. This new series of XFI™ SPR (Valve Springs & Phaser Modifications Required) Camshafts features four unique cam grinds that each provide substantial gains in both torque and horsepower.

The 2007 and newer GM L92 engines utilize Variable Valve Timing (VVT) technology, which changes the timing of the valves while the engine is in operation. VVT is controlled via cam phasers, which are computer controlled cam gears that automatically optimize camshaft timing based on the current engine rpm. While this technology provides tremendous efficiency benefits, it presents a challenge when designing performance camshafts. This is due to the wide range of valve timing movement which causes piston-to-valve clearance.

As a result, the COMP Cams® engineers have developed a Cam Phaser Limiter Kit (Part #5456) that restricts the range of cam timing movement from 50 degrees to 20 degrees. While still utilizing the efficiency benefits of the VVT technology, this modification provides the necessary valve clearance for larger, more serious performance camshafts with tighter lobe separations. The resulting increases in upper-rpm horsepower (70+ hp) from a simple camshaft swap are some of the largest ever seen by valve train experts at COMP Cams®, and these gains occur without any sacrifice to bottom-end or mid-range performance.

Comp Cams Single Bolt, Hydraulic Roller w/ Variable Valve Timing, 210/224 .556/.568 114 LSA - Excellent responsiveness and low end torque with good power gains.

Comp Cams Single Bolt, Hydraulic Roller w/ Variable Valve Timing. 214/228 .559/.571 114 LSA - Substantial power and torque gains across the board.

Comp Cams Single Bolt, Hydraulic Roller w/ Variable valve Timing. 218/232 .563/.575 114 LSA - Extremely strong from 4500 past 6700 rpm with noticable idle

Comp Cams Single Bolt, Hydraulic Roller w/ Variabl Valve Timing, 222/236 .566/.578 114 LSA - Best choice for maximum power in aftermarket/CNC cylinder head application




Opinions? Im not sure what to think. How hard would these be to tune? Sounds complicated but if they work this could be great. No loss of low end, but the upper rpm benefits.

I know they're new but I cant find any info about anyone running them anywhere on the internet. I almost think its better off getting rid of the vvt and afm and just going with a tried and proven cam like many have already done. Thoughts?

 

I like the Stage 2 CAM, 214/228 .559/.571 114 LSA

Call EPS they can tune aftermarket VVT ... http://www.engpwrsys.com/

 

Better yet get an EPS custom grind and you'll get a hotter lobe design and make even more power

 

You ordered one right? Get it installed yet?

 

Yes i ordered an EPS 222/230+4 .600 VVT cam and Blah no not installed yet. I havent had much time this year to do anything work has been insane which I am very pleased about but considering the current situation I would have left my ride alone for this year and done the new engine swap over the winter. The weather has warmed up and theres all the nice rides bombing around and mines sitting in the shop in pieces.

I hope to get some time this coming week to stuff the parts in it and stab the engine back in but I've been saying that every week for two months now

Sooner or later I will get to it though I have full focus on the project and spend every spare moment thinking about it and perusing the message boards between meetings and such at work.

 

Can EPS tune the VVT cam along with the tranny without having to see them in person? If not who can?

 

This is the one I bought. I'm waiting for everything to show up before I install it.

 

Probably have to send the modules to geoff to do that...Blackbear and Wheatley, among others can do mail order tunes. Justin (blackbear) sells the AutoCal, so you can send tunes and logs via email, don't have to wait for modules or cables in the mail.