What rockers should I run?

[Squeallhanson]

I have stage 3 zzp heads with an XP hot cam in a supercharged L36 block. What valve spring, pushrods and rockers should I run? Are stock rockers good for this build?

[GTPpower]

Stock rocker, stock pushrods, 130# springs, machined retainers, and viton valve seals.

[BillBoost37]

What he said ^^

[Squeallhanson]

Thank you guys. I believe that heads I got came with 130# springs. There is a cam should I still use stock pushrods?

[Squeallhanson]

I think zzp said longer ones

[BillBoost37]

Please look at your question.. I'm cornfused

[Squeallhanson]

Zzproformance wants longer pushrods with the cam I got.

[coolone]

If you want accuracy, buy the PR tool to measure length, then order them. But really with hydraulic lifters, you're not going to have an issue with PR's. StageIII heads and an XP cam? Hmmmmm... GenV, IC & 1.7 rockers on those heads were recorded (old) around 360whp, switch to an XPZ and go to 400+ (tuned of course)...

anyways, rockers will dictate lift, lift will dictate springs (barring shift points)... Then add double roller if high lift and you don't list your other mods that are in build? Intake, exhaust, etc., etc...

start by sharing your PLAN for the build and your expectations, maybe that'll let others help zero in on what you're looking for.

[Squeallhanson]

Hello guys, I'm Neal Hanson and have been working on my natural aspired 3800. I have some questions for you. So far what have done is had the block bored to 20000 thoudnds over and put in JE Forged pistons (flat top) and rings. H-Beam connecting rods. Crank ground and hardened. X-P Hot cam. Removed the balance shaft and filled the gullys Put on double timing chain set. New oil pump with machined cover. New timing cover. I have ZZP heads stage 3 with the multi layer metal head gasket to put on. What kind of rockers should I use? LS7 lifters. L36 supercharger kit. would the 33# injectors be right for this set up? ZZP Headers with egr delete. What size down pipe should i use? No cat but what would be good to use for exhaust after the down pipe? Should i run an inner cooler? What kind of spark plugs should i run? The super charger has the 3.8 pully can i go smaller and how much? What are your thoughts on this build any concerns? Any tips or suggestions?
Thanks again.

[coolone]

Safely Modding Your 3800 Powered Car!!

[SgtMarshal]

Hello guys, I'm Neal Hanson and have been working on my natural aspired 3800. I have some questions for you. So far what have done is had the block bored to 20000 thoudnds over and put in JE Forged pistons (flat top) and rings. H-Beam connecting rods. Crank ground and hardened. X-P Hot cam. Removed the balance shaft and filled the gullys Put on double timing chain set. New oil pump with machined cover. New timing cover. I have ZZP heads stage 3 with the multi layer metal head gasket to put on. What kind of rockers should I use? LS7 lifters. L36 supercharger kit. would the 33# injectors be right for this set up? ZZP Headers with egr delete. What size down pipe should i use? No cat but what would be good to use for exhaust after the down pipe? Should i run an inner cooler? What kind of spark plugs should i run? The super charger has the 3.8 pully can i go smaller and how much? What are your thoughts on this build any concerns? Any tips or suggestions?
Thanks again.

you are asking a lot of different questions here and need to learn some engine theory. a good place to start is by reading the safely modding your 3800.

http://www.grandprixforums.net/threa...00-Powered-Car!!

[blueguy]

These two got it.

[Squeallhanson]

I read over "safely modding your 3800 powered car.. it was vary helpfully thanks guys for the recommendation.. it answered a lot of my questions

[Squeallhanson]

I will let you know if I have more..

[Squeallhanson]

What brand of rockers should i get.? I know i have to use stock ratio.

[GTPpower]

Stock rockers!

[Squeallhanson]

So go right to gm?

[Scottydoggs]

use the rockers that came on your heads. aka stock rockers.

[Squeallhanson]

Even with 150,000 i should use them?

[Scottydoggs]

its what most use. the old stock rockers. so it should be ok.