vmapper

iTrader: (8)

Which head would you choose and why?

Engine: 347ci
Forged
~9.7:1 Static Comp.
stock rockers
Procharged
Dur @ .050 232 int 240 exh
Lift .595 int .608 exh
Lobe Sep 115.0

243 head pluses - sodium filled valves / A.I. 226cc cnc porting / light valvetrain / serious numbers / upgraded springs to Extreme Patriots.

230cc AFR head - larger heavier valves, shrouding of small 3.905 bore. - AFR! that says it all 3/4" deck.


Same Price for either, which one would you get?
Which will perform better on the street?

Thanks

_GTO_

At the same price I wouldn't buy a stock cast heads , go for AFR it will even benefit you in future mods.

garygnu

get the AFR ,they match up great to a fast intake.

senicalj4579

iTrader: (41)

If its out of those choices I say AFR.
But if you wanna put another choice in the group I say go with TEA stage 2.

moeZ28

iTrader: (7)

Ai................

01_SuperSlow

iTrader: (7)

For your setup, I would choose AFR because the thicker deck helps with boosted applications.

01ssreda4

iTrader: (96)

Aftermarket casting over stock casting in this instance.

vmapper

iTrader: (8)

So no one thinks roller rockers are a must for the AFR heads?
If so, that changes the cost structure. And putting the A.I. head in favor as it has powdered metal guides, not bronze like the AFR.

pharmd

iTrader: (4)

Why not look at AI's TFS 230's? Then you get the thicker deck, and alot more flow? how much boost are you running?

djfury05

iTrader: (30)

AFR since your boost or look into the AI TFS as posted above

My6speedZ

iTrader: (18)

AFR or Trickflow as cast

Don't really NEED the biggest baddest heads on the market on a boost application, although, the lower your boost number means a more efficient motor. If you want an aftermarket casting because of the thick deck then I would look into the cheapest aftermarket head you can find; In that case the As cast Tricflow 220's will do you find.

The only thing with a set of Trickflows of AFRs is you will have to call AFR or TEA and let them know you want to use the stock rockers so they can put in different guides, or just run roller rockers.

pharmd

iTrader: (4)

True, but I would add that since we really don't know how much compression he is planning to run, we can't say with 100% certainty what is optimal. If he is running 8-10 lbs he could probably benefit from a head that is more of a premium piece (for example the AI TFS), if he plans on running 16+lbs efficiently of the port and chamber are less critical and a more budget solution could be pursued if price is an issue. If price isn't an issue, just go with the best head from the beginning because it will perform awesome either way, and when you want to do a different build if you need to you can sell them for a pretty penny (as Im sure they will hold value better than a budget head).

Just my 2 cents

vmapper

iTrader: (8)

D1-SC
with 8.25 custom crank pulley
3.4" head unit pulley
6600 rpm.

as mentioned, boost value is somewhat irrelevant.

As for why Im not looking at AI TFS 230? Becuase they are more money than the AI worked 243 or the AFR deal which has been presently passed to me. And are the AI TFS 230 meant for 4" bore?

vmapper

iTrader: (8)

Im actually leaning towards the AI 243 (thats what is on the car 243)...
The 230cc AFR though, works out to be same price if I sell the 243 for 400.
I don't believe thicker deck is that critical than many think, there are plenty of big power FI guys on here using stock castings that are not 3/4" thick decks. If your tune is crap, you will lift the head regardless / push water.

Actually, my biggest concern is the Bronze guides in the AFR... using stock rockers. (not being FI with deck thickness) - having to buy roller rockers... and then I get into the delema of Yellas and scorpions breaking and Jezel being the proper buy, which throws the budgeting of this out the window in a serious way.
with this cam, is this a problem for premature wear?

vmapper

iTrader: (8)

As stated on their site:
Our 230cc CNC'd head based on TFS' aftermarket castings is designed for 4.000" and larger bore LSx application

I am not using an LS2, but an LS1 / 6 bottom

96capricemgr

iTrader: (1)

I think it sounds like you have a better grasp of things than those offering opinions. Things like the "thicker deck" are marketing points and based on the huge power guys are getting out of stock longblocks not a particularly valid concern.

BlueBird346

iTrader: (13)

If price is equal, Id go with the AFRs.

Sales@Tick

iTrader: (3)

Deck thickness plays a much more integral part than most think. At the power level and cylinder pressure you will be seeing though it is not that big of a deal.

Tune really isn't the main cause, but timing is as a more advanced timing number will create more cylinder pressure than a lower number. Cylinder pressure is what lifts the heads and causes them to become unstable and move around on the deck.

I'd look into the AI 243's they make great power and for what you're looking to do an aftermarket head really isn't all that needed.

That isn't to say that an aftermarket head isn't ever needed or should be overlooked. It depends entirely on the situation and what the end user is looking to do.

I do prefer the TFS heads over any other and I think the as cast 220's or TEA 215's or 225's would work just as well as the AFR's.

I just spoke with Ron on Friday at AI. Very good and very nice people over there.

pharmd

iTrader: (4)

Gotcha, must have over looked that. I ran AI's 243's on my TBSS both with LS2 and 418 LS3 with very good results...several stock SB NA ls2's have gone or been very close to 500rwhp...I think its a solid option and will make very good power for you...additionally I will echo what Tick said, those guys at AI are great to deal with and absolutely know what they are doing!

gollum

iTrader: (1)

Wouldin' the new Promaxx small bore LS3 heads be a better option. They state their as cast square ports will out flow most all ported cathedral heads. Bolt on a cheap LS3 intake and rock.
https://ls1tech.com/forums/generatio...ls3-heads.html