b0b

iTrader: (1)

I am going to finally get to do H/C this summer and I am torn between these two. I want lots of power/torque usable in the lower RPMs. The cam is probably going to be EPS 226/230 or 230/234, whichever one comes best recomended for me. I have tried searching threads on the debate between these two heads and not been able to come up with much. I really didnt want to make another "which head" thread but I really need to know.. So here goes. Other mods I am going to do at the same time are LS6 intake or possibly a FAST 90/90 if I can get a deal on one. Also adding a UD pulley, possibly some 1 7/8 headers, injectors for sure, and a LS6 valley. My sig has all of my current mods except a 225 pump which I now have. I have an S60 w/4.10 in the near future that will be done before the H/C. Price difference between these heads are right with each other once you factor in upgrades from AI and the cost of buying the castings first. The car is a weekend/nice weather car with a few trips to the track per year. Like I said, I want lots of usuable power down low, I dont want to have to spin it to 3.5 to 4k before it starts making power.. I do a lot of reading on here and wnat to get the best setup possible in mind before I start dumping money into parts. Lets have some insight here guys. Thanks

senicalj4579

iTrader: (41)

I thought the stage 3 was for a larger bore?

I just sent 243s to AI and I feel I made the right choice over the PRC.

I asked them to spec me out a cam that would make more power than the 226 on their page. So lets see what I get. So its either the 226 or the one they spec for me.

b0b

iTrader: (1)

You're right, I guess I meant to say the 2.5's. brain fart

SWEET98SS

iTrader: (8)

I sent them my 853's for the 219 HCR porting and also a cam. I chose them as I wanted something that was specd for what I wanted, I didnt really feel that with anyone else, they just agreed with what I chose. My car drives pretty darn close to stock now, dyno numbers tomorrow. Should be well over 400 to the wheels.

mac62989

iTrader: (1)

I know the PRC are a great head for the money but when I have enough money set aside, AI will be getting my business. Theres a lot of AI 243 results in the dyno section if you want a ballpark of what you could make with the heads.

02*C5

iTrader: (1)

Have a set of AI 226 and they are worth every penny. They they are going on my new forged 6L and I am forward to making somewhere in the realm of 650+ rwhp through a 4L60E.

b0b

iTrader: (1)

I am also considering their HCR 241 deal as you can get to within about 10whp of the 226 243's according to what Ive read. It just seems like a good idea since you get to avoid P2V issues.. :/

mac62989

iTrader: (1)

Your worried about P2V with which heads?

b0b

iTrader: (1)

the AI 243s, 226cc

mac62989

iTrader: (1)

Ok I was gonna say the HCR 241s are listed as having stock like P2V room. Youll save money going with 241s..

SWEET98SS

iTrader: (8)

Just posted my results, with better heads, intake and tb, should be 450

432 rwhp, 392 rwtq.

https://ls1tech.com/forums/dynamomet...o-results.html

mac62989

iTrader: (1)

^Lol key type there. Better headers, intake, TB. Heads are good!

beanhead

iTrader: (1)

If you don't already have a set of 243's it's pretty hard to beat PRC for the price. AI does great work so really its a personal preference. I would go with the 243's over the 241's but that is also dependent on your overall goal. The 243 is just a better head to start with and offers more potential for the future. just my 2 pennies

01ssreda4

iTrader: (96)

I chose A.I.

https://ls1tech.com/forums/generatio...-cnc-work.html

b0b

iTrader: (1)

There are just too many threads with impressive results from AI. Now I just need to figure out if its worth buying a $500 set of 243s to send to them or just use my 241s that I already have

BrntWS6

iTrader: (7)

Can't go wrong with either....i'd just pick the lowest price. I had good results with my PRC package with 2.5 LS6 heads.

mac62989

iTrader: (1)

For a 10hp difference I dont think you can go wrong with the 241s. The money you save can go towards other/better supporting mods..

Camaro99SS

iTrader: (4)

I went through the same decision process, and after talking with Phil at AI, he said there would be ~8-10hp difference between the HCR 241's and 226cc 243's with my stock shortblock setup. Between the extra $150 for the machine work on HCR 241's/853's and ~$500 needed to buy 243 heads, it all boils down to whether or not 8-10hp is worth $350 extra.

You could also get some 317's for less and get the same results as ported 243's(with welded chambers like the HCR 241's).

Jason

b0b

iTrader: (1)

I think I will probably stick with 241s unless I run across a hell of a deal on 243/799s. For a few reasons, I can stash the extra pennies for something else, and Ill also be able to appear to have stock heads to those who know to look at the casting number lol

senicalj4579

iTrader: (41)

If your going with stock casting heads then I say get the best. Thats what my way of thinking was when I made my choice with the AI 243/799. Let me bring to your attention that cncing will cost MORE on the 241s so forget the idea that will will be saving alot more. ALSO...once you get 243s installed you can then sell your 241s for 100-150. So the cost is not much more for 243s