20sickss00

iTrader: (19)

i just bought an ms3 cam kit, springs pushrods, ls6 ported oil pump, powerbond ud pulley, timing chain, etc. Now I am going to get ctsv lifters and want to know how 243 heads would work over the 241's. Can I get a stock set and throw them on? how much better will they flow with my setup? If I pull the heads to swap lifters, I don't want to put stock heads back on after I do all that work, I am on a budget so that is why I was thinking of picking up a set of good 243 heads, have them gone over and my springs installed, then set on the car. Is it worth the upgrade.

Fastdriver1992

iTrader: (1)

more air flow = more hp its worth the upgrade if your gonna take advantage on the amount of airflow with a bigger cam down the road. + your bumping up the compression from 10:1 TO 10.5:1 which will give u alittle more power

20sickss00

iTrader: (19)

I ordered cam kit with the 7.400 standard pushrod length, If I swap the heads, will that be changed or is that going to stay the same. And also can the stock ls1 rockers be used in the ls6 heads?

PREDATOR-Z

Unmilled with stock gasket, yes same as 241s. Unless they are original LS6 243s with hollow valves. Those have longer valves.

01ssreda4

iTrader: (96)

Definitely go with the 243s. That cam is going to want to breathe, and they flow more cfm then a 241 head. You will get a small bump in compression also.

fastsspr

iTrader: (49)

yes the guys says are rigth but if i was you port the heads well worth the investment you can find more HP.

NemeSS

iTrader: (127)

Bolt them as is. Will make significant difference

20sickss00

iTrader: (19)

or should i just save up and spend the extra cash and get the 5.3 heads from tsp. the reason i didnt get those now with the kit was because i picked up a wet kit which used up a good chunk of cash, should i just get the 5.3 heads with my tax return? see guys running ms3 with tsp 5.3 heads and putting down 440-450. I assume i would put down maybe 420 with the stock 243's

usafws6

iTrader: (10)

I put down 422 with stock 706s a torquer 2 and a fast intake/tb