Slash8915

iTrader: (21)

I found these on craigslist, and I'm kind of interested. Will these work well with the cam I'm going to get in my sig?

http://houston.craigslist.org/pts/1796871050.html

SSPerformance

iTrader: (76)

need flow numbers to tell

Slash8915

iTrader: (21)

The guy says the chambers are the same size as 243's and flow 25cfm better than stock 243's.

5.3LJimmy

iTrader: (10)

It"s hard to say by just looking at pictures. Some flow numbers would be nice or even some decent shots of the ports. My guess is at that price that the port work is not exactly top notch as it would cost much more than the asking price for porting, milling, and a valve job.

Blue_GTO1199

iTrader: (1)

he said 290 cfm

SSPerformance

iTrader: (76)

ur taking a gamble with out flow numbers.... someone can do more harm then good porting them .... i whould NOT buy them with out flow numbers

Slash8915

iTrader: (21)

Ok, so I found out the guy that did the work used to work for a shop around here called "Pavlock Performance". They used to be a sponsor on here I think. He said he will put them on a flow bench tomorrow, but he said they flowed 285-290 cfm.

09camaro383

iTrader: (2)

Buy 243 and have them ported!! they will always out flow 853 but i think you are convincing yourself of buying it so buy it if you cant afford 243's

chevysten

iTrader: (5)

I know who your talking about.The guy knows what he's doing.I would get them.Just my personal experiance.Mike

orangeapeel

iTrader: (18)

If the same CNC program is run on them then it ends up being pretty much the same heads with the difference in CC unless you mill to appropriate.

09camaro383

iTrader: (2)

you CANT run the same CNC program!! different design on exhaust ports!! 243 have D shape exhaust port and I wouldn't think someone will want to change it??

orangeapeel

iTrader: (18)

I meant in theory. oval port vs d port isnt going to make that much difference.

09camaro383

iTrader: (2)

come on orangeapeel!! D shape improved a lot exhaust flow and one of the reason why 243 became so popular!!

orangeapeel

iTrader: (18)

Does it just flatten out the flow more on exit? Seriously, I just thought it was another cosmetic identifier between an LS6 and an LS1 head. Does it really make them that much better? I am not arguing for the sake of arguing. I would go pick up a set of ported LS6 heads in a hearbeat if money permitted.

09camaro383

iTrader: (2)

Many people and myself cant afford AFR, Trick Flow or Dart heads and bought ls6 heads!! There's a lot of proven FACTS ls6 heads are superior than ls1 and i know you know is true!! also is not just another cosmetic identifier like you said "are you drunk" and if it didn't make them that much better why everyone swapping them!!

orangeapeel

iTrader: (18)

Not everyone is swapping to them though. Drunk would be nice. Unfortunately just too tired to be posting. I know they are superior to the LS1 head, but not a lot of people come out and say why. It is just a "uhhh, get a small loan and get AFR heads, their better." Or whatever the manuf. But, I really didnt think that the D port was "SUPERIOR" to the performance of the head. I figured it was like the different style of casting. If it is better, then apparently I was not aware of it being that big of a deal.

09camaro383

iTrader: (2)

I wish i could get a loan many that couldn't afford aftermarket heads and doing cam swap bought ls6 heads and I think that drag times and dyno numbers have proven to be superior to Ls1!! Like i said to Slash8915 is you cant afford ported 243 heads I will buy the 853 heads!! it seems a good deal and you can only buy what you can afford

thunderstruck507

iTrader: (18)

that looks like a good deal, willing to bet someone might have dropped them off for the work and not come to pay for them or something of the sort

be careful posting deals to ask about them or someone else is likely to snag them

fccs

iTrader: (26)

I would pick them up for the price. I got cnc ported 806 heads and they are doing much better then stock. Although Katech ported mine, so I know the sponsor is good.

Slash8915

iTrader: (21)

ok, flow numbers are...

.100 66
.200 148
.300 204
.400 240
.500 271
.600 280

For the heads, install, new LS7 lifters, head gaskets, head bolts, ect he's charging me $900out the door. i'm having it done as we speak..