LS1 1.8 rollers power and price

[vx300kw]

Hey guys. I was wondering what power gains i would get out of my LS1 after fitting 1.8 roller rockers? My cars got VCM suite tune, K&N intake, 3.7 diff gears, tri y's dual 2 1/2, and 2800 converter. it makes 308kw at the engine at the moment. thanks for the help guys.

[TappetHead]

I'm assuming you still have the standard camshaft. If so the average power gain is about 10%.
Cheers.
Mark.

[vx300kw]

Yes thats correct the internals are stock. 10% on what i've got sounds good. Would i be correct in saying that they would cost around the $800 mark. And would i need a re tune of the car to suit the new rockers? thanks again for the help

[MICKY.D]

Hey vx300kw,
The YT 6646 1.8:1 Ultralite bolt ons are $863.35 inc gst.
Ecu does not require tuning after fitment of these.

Cheer's
Micky.D

[vx300kw]

Thanks Micky.D thats been a great help.

[rathy1406]

Wouldn't it be better to get a touch up on a tune to get the most benefit out of the rockers once installed?

[TappetHead]

Wouldn't it be better to get a touch up on a tune to get the most benefit out of the rockers once installed?

For sure.
Good gains in power, economy, and drivability can be had with the right tune.

[Typho0n]

is it worth doing with a larger cam??

[Farlig]

as long as the overall lift doesn't compromise anything.

[danja]

Generally, how is the power gain distributed?

Would you expect to get any low-end power out of rockers, or just at the top?

If you have any dyno graphs that would be great!

[TappetHead]

The improvement in generally throughout the rev range and is noticable on take off.
Trying to find dyno sheets, it's been ages since we did the original development.

[NVE_069]

I'd pay that for that sorta gain. on top of what i have