tbyrne

The SLP 1.8 rockers are now available and can be ordered in four configurations -

SLP Rocker Arm Package, LS1/LS6 rockers only

SLP Rocker Arm Package, LS1/LS6 rockers with LS6 Springs, Keepers

SLP Rocker Arm Package, LS1/LS6 rockers with SLP Springs, Chrome Moly Retainers, Keepers

SLP Rocker Arm Package, LS1/LS6 rockers with SLP Springs, Titanium Retainers, Keepers

SLP's exclusive design is based on the stock rocker and is built by the OEM manufacturer using the same high quality materials and processes. Versus the stock 1.7:1 ratio rocker, SLP's 1.85:1 ratio rocker will result in horsepower and torque gains by increasing lift by approximately 10% and forcing the valves to accelerate faster during opening and closing. SLP's rocker was designed as a bolt-on replacement for stock. No valve cover or cylinder head modifications are necessary and stock pushrods can be re-used. Depending on model application, optional SLP valve springs may be required.

Pricing for each kit is listed on our website and you can apply our current 10% discount to the pricing.

Have a good day,
Tom

Mike TexaSS

10%more power = 34.5 HP all from rockers is this true. And would these be good for some Ls6 heads with 2.02 1.60 valves??

kh24

It said it increases lift by 10% not HP :cheers:

4THTOY

Tom
What kind of HP/TQ increase should we expect on a stock LS1?
Thanks
Ira

tbyrne

You should see about 10-15hp from this mod and they will work well with the LS6 heads.

Tom
www.tbyrnemotorsports.com

dads01dream

Tom,

Is this kind of mod something for the "weekend mechanic"? Any special tools required?

Thx!

tbyrne

The rockers aren't bad but changing the springs becomes a little more work. A little more room and easier than doing them on an LT1 car though :)

Tom

vetterdstr

I replaced my rockers with the 1.8 Crane Units. I did pickup some HP off of them too. I also picked up Valve Float above 5600 RPM. As a result I had to have the valve springs upgraded. You can see the diff between the before and after dyno sheet. :eek:


Given these new SLP units are 1.85's I can almost bet money on it that you will need a spring upgrade with the install on an LS1 engine.

vetterdstr

Face

What did you dyno before the rockers?

vetterdstr

When the rockers were installed... I also had the TPIS Long tubes, & LS6 intake installed. I dont have a dyno for the rockers only. :(

vetterdstr :cheers:

Closer_2001

I got Valve-Float on my stock cammed 2001 LS1 at 5100-5600 RPM. Went to LS6 springs. Gone. The stock springs are marginal at best.

I wrote a document with pictures on swapping valvesprings. Shoot me an email if anyone woudl like a copy.

bparker

I am very interested in these new rocker arms, and would like to know if I would need to change to a new spring - from the stock Yellow 2002 LS6 (Z06) Springs ...

Please let me know,

BP

tbyrne

Here is some info that might help -

SLP 1.85 Rocker Arm compatibility with stock camshafts, springs and retainers

Y-body - equipped with stock camshaft springs and retainers -
1997 - yes
1998 - yes
1999 - yes
2000 - no
2001 LS1 - yes
2001 LS6 - no
2002 LS1 - yes
2002 LS6 - yes

NOTE: If not compatible then SLP springs and retainers must be used (either SLP 2002 LS6 valve springs or SLP 1.250 valve springs).

LS1 valve spring
install 1.800" / 75 lbs
max lift 0.525" / 230 lbs

2001 LS6 valve spring
install 1.800" / 90 lbs
max lift 0.540" / 250 lbs

2002 LS6 valve spring
install 1.800" / 90 lbs
max lift 0.600" / 300 lbs

SLP valve spring
install 1.800" / 90 lbs
max lift 0.610" / 320 lbs

Tom
www.tbyrnemotorsports.com


[Modified by tbyrne, 10:01 PM 5/26/2002]

bparker

Thanks Tom, I just sent you an email..

Best,

bparker

Tom, I have called both your sales and tech line only to be prompted to leave a voice mail.. :mad

I would like to speak with you about these rocker arms, so give me a shout when you get time for the tele.. 972.467.1460

Brent

bparker

Called again - had to leave a message.. waiting on you now - cause "Tag Your It!"

:D

yelloz06

Why the compatability with the 2001 LS6 Z06 but not the 2002 LS6 Z06?
Is it because of the higher lift cam?
Also I noticed that these, like the stock lifters have the small / narrow end that contacts the valve, is there any benefit to the style that are much wider / stout at the roller portion (or will this type require other modifications)?
Thanks for helping a valvetrain challenged individual

Thanks :crazy:

:cheers:


[Modified by yelloz06, 2:01 AM 5/29/2002]

bparker

To answer your question yes - as the 2001 Z Springs are Blue and the 2002 Z springs are yellow - :lol: - and yes I have been told that the Yellows handle a higher lift - up t0 .600 :eek: But I wouldnt use them for a .600 lift cam - maybe .590 max...

BP