jsteele90

iTrader: (13)

im thinking of buying a set of used 241 heads that i can get real cheap. what upgrades can i do to them for a little more bolt on power over my stock 241 heads. maybe a port and polish,valve job,milled, etc. maybe a valve upgrade? any options?

ss.slp.ls1

iTrader: (36)

You could send them out to be P&P, milled, and have the valves worked...the whole nine. But if you are going to do that, you could probably just order some ready to bolt on P&P 5.3's or P&P LS6 heads.

BS@PMS

I have a set of 241's. Only 38,000mi on them in great shape with stock valves and springs. $150

camarojunky74

iTrader: (14)

i have a set with less than 30k miles i will sale for 100, pm me and ill send pics, hell id be willing to meet you at cms to do the exchange so you dont have to drive to farr, i can meet anyday this week except thurs,

djsanchez2

iTrader: (14)

Send them to patriot. They charge $600 to CNC your stockers, and will even toss on a Dual spring kit w/ Ti retainers for another $250.

SUCK MY SS

iTrader: (14)

if you decide to take your heads to a hand porter, make sure the person is credible, or you are just wasting your money...theres a lot you can do with stock casting heads to make good power....so dont let people fool you into needing an aftermarket casting...for an NA, or street boosted engine stock castings will work fine...

redracer1

iTrader: (2)

Let me know what you come up with at the meet on Sun. I'm think'n about do'n the same thing or LS6 cnc then a good match'n cam.

ss.slp.ls1

iTrader: (36)

243's are one of the best stock castings for P&P'ing for power.

redracer1

iTrader: (2)

Thanks for that, my only problem is I was hoping to keep it #'s matching heads.

jsteele90

iTrader: (13)

same here.

redracer1

iTrader: (2)

Thats the tough part 243's cnc is the way to go. Try'n to keep it emissions legal also.

Ryne @ CMS

iTrader: (10)

smog guys are not going to know the casting #'s

djsanchez2

iTrader: (14)

AFR's and Edelbrock heads are emissions legal


Most companies use stock cast heads to port anyways, so it's all pretty much dependant on the CNC program they are running for flow characteristics/limits if you are staying w/ the stock valve size.

And yes like Ryne said, as long as it passes the sniffer it doesn't matter what heads you have on it, most people will never know anyways.

redracer1

iTrader: (2)

Correct,but being an LE I'm trying to keep a #'s matching car.

180ls1

iTrader: (4)

a good ported set of 241's should be able to pull 300+cfm. It seems like a lot of people put a lot of emphasis on the casting number instead of how they flow. Plus if you want to sell a numbers matching car i would want to sell it bone stock anyways not modded out. You can always just put the stock castings back on there if you ever wanted to sell.

jsteele90

iTrader: (13)

know any good machine shops around here?

carbonfiberbird

iTrader: (4)

is it expensive/worth it to build up stock heads? The reason I ask is cuz no one seems to do it.

james562

iTrader: (35)

Strictly Performance does a damn good job with their ported stock casting heads 241's, 853s, 806s are all the same once ported...

I believe they flow 305-310 cfm on the intake. I can't recall the exhaust flow # off the top of my head.

there # is 818 342 5693 or 818 262 7409 if you wannna give them a call and price it out

jsteele90

iTrader: (13)

thanks you

crazy camaro

iTrader: (5)

i just had a set of 241's ported here in fresno the guy went as extreme as he could on them without getting the walls too thin raised the roof on the intakes the whole **** and they flowed 295 int. and 238 exh. tested without a pipe their not bad but much easier to see 300 cfm out of 243 heads its worth the extra 250 -300 dollars for usedd castings imo