01CaMMMaro

iTrader: (25)

Hi, I have an 02 with the crappy 853 heads and im wanting to go 243 Z06 heads. Is it possible to put these on and run fine with the stock camshaft? It is my daily so im not looking for a cam as of now.

JohnS Z28

iTrader: (1)

yes theyll work. later on you should send em to get ported and do the cam then too.

01CaMMMaro

iTrader: (25)

Oh I will. Once I graduate and have a daily driver, this thing will be a beast.

baalic

iTrader: (8)

Actually cam isnt even needed, but a tune would be most beneficial. I bet you see 20rwhp with a tune over your 853's.

BigMilan312

iTrader: (1)

Do it, it can only benefit now and later down the road

gregrob

iTrader: (8)

You sure about that?

CajunZ28

should be 241s......my 2002 had them. now the shelf does, waiting on a new home or build

baalic

iTrader: (8)

243's are still superior. Even if he doesnt know how to find the cast # lol.

01CaMMMaro

iTrader: (25)

they are the 853's, i checked the casting numbers. I bought the engine from a guy and planted it in my V6 car, I looked at the intake to make sure it was a LS6 but didnt even look at the head casting numbers because I had plans of swapping them out anyways.

need2speed94

Get the 243's, get them CNC'd... then pickup a cam and new valvetrain components!

2000TransAmWS6

iTrader: (12)

I think that running 243s with your stock cam and getting it tuned is a good idea.
It will be more fun to drive, and if you can keep your foot out of the gas you'll probably get better gas mileage too (that always nice on a DD!)

01CaMMMaro

iTrader: (25)

Awesome, thanks for the info guys. I will most likely be doing if I come across a low mileage set. Probably keep them unported for now.

Anything I should know about getting a pair of used heads? Anything need to be done to them? Will my 853 rocker arms work on 243s or should I buy some different/better rocker arms?

This will be my first head swap but im very mechanically inclined, did all the mods myself in my sig. Any estimate on how long this will take me?

baalic

iTrader: (8)

I would upgrade everything i could with the heads off. Peace of mind.

baxsom

iTrader: (6)

if you get 02-04 243 heads, they will have the hollow/sodium filled valves and you will need a different length pushrods. 243 heads from an 01 z06 will not require different rods. also look at 799 heads. they are physically the exact same as the 01 243 heads. they just came on the LS2s and are usually cheaper. the stock rocker arms will work great but looking into the comp cams trunion upgrade. if they are used heads you should at least take them to a shop to make sure that they are perfectly flat and then replace the valve seals. since you are taking the heads off anyway, might want to consider replacing the lifters and trays as well.

01CaMMMaro

iTrader: (25)

Ok great, could I just use the rods off of my current heads? Not sure to figure out which length I'll need.

98MNBZ28

iTrader: (21)

Sorry to thread hijack but didn't want to start a new thread being a lot of my questions been answered and i have a few more

I have a 99 and was looking at doing the same. Which year heads should i look for and what should i look into swapping once i get them?

01CaMMMaro

iTrader: (25)

98MNBZ28... New thread might help you out since our years are different ...

01CaMMMaro

iTrader: (25)

Had another question... Will my current 853 valve covers work on 243 or 799 heads. if not, which valve covers will work with the 02 coil packs?

garygnu

get a mail order tune from frost !

dr_whigham

iTrader: (49)

If they're center bolt valve covers, they will work. They are all interchangable.