jeremym

iTrader: (3)

225cc TFS or 240cc TFS for a stroker motor? It is a 6.0 iron with a 4.060 bore w/a 4inch stroke and the cam is a 244/248..612/615..112LSA. I will be running 11.75 comp. The 240cc will be av. in a couple of wks or so.(I think ). Brian at TEA has been helpful thru the last 2 wks about both heads. Let me know when the 240cc are ready. I dont think there are any flow num#'s yet. I know the 225cc are bad *** so that means the 240cc should be better.

1936FordPU

iTrader: (3)

Toss the cam out the window and grind another one with your new heads. Get some one who actually knows how to cam the Trick Flow head for your setup.

jeremym

iTrader: (3)

I was told my cam was fine. It is a good cam.

JakeFusion

iTrader: (7)

That's a good cam. A 4-degree split has been shown to work well with the TFS heads.

I'd wait and see what the 240s (or 235, whatever it ends up being) do on the 4.060" bore. If the flow increase is significant in the .400" and .500" lift areas, you'll see quite a bit more power with the same setup.

Beast96Z

iTrader: (21)

The bigger heads aren't going to do alot of good if your still using a FAST intake. However, I'd still get them and upgrade the intake when funds are avalible. The cam you have will be fine. It's a proven performer.

Chicago Crew UnderBoss

iTrader: (1)

I agree 100% with the above and with what JAKE FUSION also states!

JakeFusion

iTrader: (7)

It should be noted the FAST 90 knocks down flow by a percentage, not by a specific flow rate or to a theoretical limit.

It's not like a 360CFM head will only flow 290 with the FAST, nor will the FAST always knock down a head by 30 CFM.

Anyway, I think the FAST is sufficient upto about 600rwhp. A couple of years ago before aftermarket heads were all the rage, ported LS6s and FAST 90s were doing 580+ rwhp in 418-427s without much problem. Going to 441-447 easily pushed them to 600rwhp. Those tuners were/are ECS, Cartek, Vette Doctors, and A&A.

jeremym

iTrader: (3)

Thanks guys. I do have a unported FAST 90/90 and Kooks 1 7/8 w/ 3inch true duels. I will see what the 240cc ( or 235cc) do. My goal is to have 550+rwhp street car on pump gas.

WizeAss

iTrader: (5)

too bad the shop that originally set up your combo does not get the concept that 12.6:1 or more compression is not streetable in Texas heat...... 93 octane used to be good.... but after the ethanol switch I am sure it is not what it used to be. It is going to be nice for you to be able to pull up to the pump.... put 92 or 93 in it... the drag Dan's *** with him on the sauce.

Get that baby around 11.4:1 or so and you will be able to run some more timing and will likely have a easier car to tune and much more driveability.

Good luck bro!
btw, get that fast ported...... those heads need to breathe!

That cam is proven on cathedral port 408 setups... I wouldnt put too much worry in it. Now if you where going with a L92 head or something with those huge *** intake valves... then I would be more inclined to question the cam selection.

Beast96Z

iTrader: (21)

True, but it should be noted that the higher you go, the less percentage of flow you will recieve. Theoretically, adding in large amounts of port volume and not providing adequate intake flow could start to knock down low to mid range power. It shouldn't be a problem in this instance, but, you know........

jeremym

iTrader: (3)

Should I stick to 11:75 comp or should I go with 11:5 comp.? Or what?

Beast96Z

iTrader: (21)

If you have a good quality 93 octane station in your area, there's no reason why you shouldn't go with as much as possiblle. I built mine at 11:85:1 with about 8.5 DCR. Should be fine on 93 and a good tune.

1936FordPU

iTrader: (3)

12:1 with a competent tuner who knows what to do to keep piston rattle down can make it work. Unfortunately, who you are using has never had that experience. Ive seen motors make 800+hp NA on pump gas with 12.5:1 compression. I will say it again, the cam and tune are probably the two most potent features and this being successful. Plugs, combustion chamber and others also play a nice role as well. How many of these people saying the cam is fine have made a 12.5:1 motor live on pump gas? Ill be waiting for answers....

Beast96Z

iTrader: (21)

If we were talking about a 12:5 motor here, this might make more sense. With the compression in question, the 244 duration cam will be enough to keep the DCR reasonable and be easier for a "less expierienced" tuner to work with. While it may not be optimal for getting every last HP, the cam in question has proven itself in multiple combinations. I've also seen many "custom" cams fall way short of numbers this cam has put up. As we've already gone over, a good tuner, the compression in question, and this cam will put up good numbers. How much is left on the table from a custom cam may not even be worth the price of said cam. Not trying to be argumentive here, but sometimes cams that are already proven are hard to beat.

1936FordPU

iTrader: (3)

It will put up mediocre numbers, middle of the road and likely less than stellar.


Im not sure who you have used to get custom spec'd cams from but the guys we use here make power and have the tuning knowledge behind it. Check out my roomate, V6 Bird's post on that 372 ci ls1 if you have any doubts. No one has made that kind of power in a FULL effort NA motor and this was done with a full blown nitrous setup.

brad8266

iTrader: (23)

11.9 here on 93 with a half *** tune(still waiting to really give it a good tune). Runs fine, no knock. Get that quench area tight in order to combat detonation.

1936FordPU

iTrader: (3)

Thats a piece to the puzzle, Brad. Still more to go though.

Beast96Z

iTrader: (21)

Seeings how less than a year ago, you were asking for tips on selecting proper cam events, I can only take this with a grain of salt. The combo Mike posted up was impressive to say the least. If you he can consistantly repeat that in that CI range, then he should be breaking records with 400+ setups. I guess we'll see how that turns out. Until then, it'll take more than one motor to skew my way of thinking. Don't take this as a bash, but more or less my unbiased thoughts. I've had small dealings with Mike in the past and he seems to be a good guy. I hope his buisness does good and he can continue to push the envelope.

Chicago Crew UnderBoss

iTrader: (1)

I totally agee and as long the dynamic compression is manageable like 8.3 to. 8.6, one can run 93 octane all day long with a good tune and make max power between 11:7 to 11:9 to 1 compression!

jeremym

iTrader: (3)

What comp. should I run with a N/A motor? It will be a street car but I want the most power. 11.75 to 11.9 I want 550+++rwhp