StealthV8

iTrader: (1)

Anyone using these on a ls4? ZZP is claiming 18 whp gain on a 5.3L chevy 1500
http://www.zzperformance.com/grand_p...=953&catid=104

06 SS

The 1.85's wont clear without some machining, I imagine a 1.9 will need some as well. I would make damn sure they are compatible with the DoD lifters as well.

Nacho SS

iTrader: (4)

They won't clear...the highest we can go with the DoD lifters is 1.8 if I remember someone saying that on here.

StealthV8

iTrader: (1)

so you guys think lossing dod and swaping lifters is worth it? or should i just stick with the 1.8?

they seem to work with the dod on the g8 but i guess thats cause its a totally different engine?

neilownz

what wont clear?

Area47

harlan sharp 1.8 rockers from summit. not the copied and failed version that zzp does.

La06GXP

I have the Harland Sharp 1.8 rockers and they work just fine with DOD. I have had them on my car since about 40,000 and have had no problems. (I'm at 99,500 miles). I would recommend that if you do the rockers to also install stiffer springs and stronger push rods. At first I had only installed the rockers and I did have valve float. I have the Comp Camps Hi-Tech push rods and 918 springs. Here is a thread showing one of the first people to do this: https://ls1tech.com/forums/ls4-front...tall-pics.html

07gxpgray

iTrader: (7)

according to zoomer they fit fine!

StealthV8

iTrader: (1)

ya and have installed them on a ls4
"2nd dyno - Installed ZZP rockers and the car gained 1 psi of boost and picked up 18 HP to the wheels! Dyno test was done on a '06 Monte SS 5.3 liter with a turbo kit installed."
http://www.zzperformance.com/grand_p...=953&catid=104

http://www.clubgp.com/newforum/tm.as...e=1&s=#4766578

Mels SS

iTrader: (1)

I want to get the rockers and I want to totaly get rid of the DOD. How can I do this?

fastLS4

Tune it out with HP or a custom tune.

Mels SS

iTrader: (1)

Yes but I won't to change the lifters and all

06 SS

You folks who claim there is no problem with them do know the OP is NOT talking about 1.8 ratio rockers, but 1.9, right? You all followed his link before commenting I assume.

LS4SPEED

iTrader: (3)

Mel I believe if you want to get rid of all the DOD parts, i.e. lifters and push rods. I think you should also replace your camshaft, to a non dod cam.

Brian396

iTrader: (3)

...x2

Bryan921SS

Also when getting ride of DOD/AFM you will use a different valley cover, which also opens up the intake mani options.

That would be the quickest route to swapping intakes to an LS1 or LS6 intake.

neilownz

still have to relocate the oil pressure sender if you want real intake manifold options.

Mels SS

iTrader: (1)

Yes I want to do all the above to remove the DOD

Mels SS

iTrader: (1)

So what all has to be done and please give all parts and #'s Because I really want to do this and then get the LS6 intake. also thanks alot guys.

07gxpgray

iTrader: (7)

Yes I know the OP is talking about the 1.9 rockers. I have been in contact with zzp about this....the monte is running the 1.9 with stock springs and everything is fine with the dod lifters as well. I am guess brcause these are modified stockers is why everything is working fine.