1nasty86

iTrader: (63)

Ok, ill have some money to drop on some nice heads here around christmas. I already have a set of 799 heads and a set of ls3 valves. I had planned on sending them to t.e.a. And having them do a stage 2 port on them and cut the ls3 valve down to 2.05, would a as cast 220 ls2 head "touched up" with the cut down ls3 valves make the same or more power? If I did go 220's id have the powdered guides installed. Thanks

Paul57

I have a feeling that you would be money ahead by selling the 2.05 valves and buying the correct size. What is the port size of the TEA's??

ss454327

iTrader: (10)

I would send the 799 heads to AI. I would take them any day over a set of stock TFS 220s.

Paul57

I would tend to believe that a shop that specializes in LSx motors would have an advantage to one that does not??

ss454327

iTrader: (10)

You're saying TEA is better than AI? I've seen work from both and they both are top notch and perform really well. AI has figured out how to get the most power from the 243/799 with the stock valves and that's a plus. Buying the TFS 220 heads and having the LS3 valves installed in the TFS heads (TFS valves are heavy) would be much more costly than having the 799s ported by AI.

1nasty86

iTrader: (63)

I have ported tea 317's heads on my ls2 now and i want to squeeze alittle more out of it. The chamber design on the 799 is better than the 317 head and I should pick up some nice torque. Im 80% sure im still going the 799 route but I wanted some other opinions

ss454327

iTrader: (10)

That's actually a pretty big bump in compression. Should give you quite a bit.

1nasty86

iTrader: (63)

The 317's are shaved .040 giving me a 64cc chamber.. But limits me on cam size with the 2.08 valve. I had planned on milling the 799's to get me 11.5ish compression. Pat g stated that im fine with the 230/238 cam I have now, but may look into a bigger one.

Paul57

You are only gaining about .5 in compression if you have a flat-top motor now (11:1). It is hardly worth the effort if that is the only place you really gain. You would better off just saving up and getting a set of AFR's.

1nasty86

iTrader: (63)

I was told id gain hardly any horsepower.. Maybe 5-10 but id gain 15-20 ftlbs of torque. To me that would be worth the hassle. With me selling my 317's id have roughly 700-800 dollars in the stage 2 799's

Paul57

Interesting...I knew you would only gain 5 horse but I did not realize .5 in compression was worth 15-20 ft lbs?? The nice thing about a compression gain is that it is a gain from idle to max rpm.
I still think you should hold out for a set of AFR's.

1nasty86

iTrader: (63)

Its not the bump in compression giving me the extra torque its the superior shave of the 243/799 chamber vs. the 317.. And I dont have 2500 to drop on a set of heads or id have went with a tfs 225.

lemkerailroad

I can get a set of ls6 243 heads ported with fully assembled units for $1400 from a company in detroit that i used to deal with before i moved to this lovely state

these are supposed to be stage 2 heads when they are done with 2.02/1.60

is this a fair price

lemkerailroad

i can also get these heads striped for less than 5 bills for the pair

would it be better to get them stripped then add parts or would it be best to get them assembled

A.R. Shale Targa

iTrader: (2)

I'd suggest selling both your ported 317s and the 799s to offset the cost of
the powdered-metal guide TFS 220s. They already have an enhanced 13.5
degree valve angle plus the "touched up" trick seems to be a great budget
alternative to full on CNC porting. I'm betting you have virtually maximized the
potential of a GM casting to this point.