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What rockers should I run?

S

Squeallhanson

New member
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?
 




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+ :D (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.
 
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.
 
Squeallhanson said:
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.
Click to expand...

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/threads/17482-Safely-Modding-Your-3800-Powered-Car!!
 


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
 


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