Great answer. Thanks for sharing. Tony is definitely the Man for sure.

 

Brian Tooley designed the TFS 245 head. Ive seen that head on alot of combos and hauled the mail better than your mailman.

 

Yes I know that trickflow 245cc head is great.
However I didn't know Tooley designed it.
I thought he was just a big fan of it.
He designed it years ago from what I have read?
I was seriously considering the trickflow head but after speaking with Tony, the AFR is the way to go. It is a superior design.
I think this is the case.
Tony designed this head.
Tooley designed the other.
We are lucky.

 

No longer available.
Seller kept it.

 

Doesn't seem like a fair apples to apples comparison though. How does his "mamofied" AFR head stack up against the Tooley designed TFS 245 head, not against his "mamofied" version of a TFS head?

 

It would be good to see Tooleys tweaked version of the trickflow 245cc and mamos tweaked version of the afr 245cc.
Same engine and combination with just a head swap.

 

I posted earlier today in my COOKBOOK what a set of Tooley tweaked TFS 245s can do. 9s in the quarter on motor with a 6 speed is moving the hell out.

Anyway Tony heads do good as well. Ive seen two 41Xci motors here on board and both made 660hp/580tq on the engine dyno. Impressive for sure. Thats roughly 1.6 hp per cube which is good as it gets on pump gas with a hydraulic roller. The 403ci AFR 230 headed WS6 in my thread rund 10.6s at 130 mph which is fast as well.

Goodluck on your project

 

Yes they are good times.
The question still remains though, which head is more efficient?

 

Well **** lets take a look shall we. To hell with flow numbers because all flow benchs are different like dynos. Besides that...

AFR head ... 15 degrees
TFS head..... 13.5 degrees

AFR intake valve 2.16
TFS intake valve 2.10

Brian Tooley personally told me in person that if a head can flow a certain CFM vs another head with a smaller valve head will be more efficient. He went on to explain why but thats been 3 years ago and i cant remember everything. I was kinda in shocked just getting to meet him in person and how himble and respectful this guy was to me. Thats something i will never forget tho cause i once thought a Bigger valve must makes more horsepower and he quickly told me thats not the case. He also told me he have seen some motors perform better at the track with less lift on the cam. Something to think about for sure.

 

Rule of thumb for cold lash iron block with aluminium heads .006 and cold aluminium block and heads .010....
You can check lash when hot to see where its at.....

 

Have you seen his interviews with the tuning school on youtube?
He explains all about lift, head cylinder design etc. It is very interesting. And yes he mentioned the trickflow 245 head on a 427. He got to 180mph in the 1/4 mile if my memory serves me correctly.
That is so cool how you met him in person.
I would have so many questions to ask.
Your answer still does not determine which head is more efficient.
Tony says the trickflows need more port volume to flow the same as the afr castings.
My guess is the V2 of the AFR might be the best there is at this time.
Bigger valves would make more hp on larger engines and bores.
There would have to be a formula for a given valve size and it's relation to flow and hp potential on certain engine sizes.
Or maybe this is something that can only be determined engine by engine?

 

So if it's a .006 cold on iron will this expand to .010 hot?
This solid roller I'm going to run is rated .010-.014 range hot but states you can go tighter on iron blocks.
What are your lash settings again from crow?

 

Its .006 tighter so if your lash is recommended to be .014 hot you set up cold at .008...
My crow cam hot lash is .016 hot, i set mine cold at .008 and hot its .015

 

I set my lash cold at .002 and after a warm up on the dyno, we checked and they were .006 hot. I left them there. Possibly going 0 cold and let them run at .004 hot for ease of adjusting in an fbody. No fighting a feela guage in cramped area

 

So that means i should set my cold lash at .007 cold so i have .013 hot lash.
I would want to run the least hot lash possible to have more effective duration.
maybe .006 is a good compromise

 

I was reading a very interesting article on the AFR 245cc vs Trickflow 245cc heads.
Both of these were actually tested and made for a 4.155 inch bore size.
Both AFR and Trickflow designed this head on that particular bore size.
I know it fits on smaller bores also but I am more confident that this size bore is where you would yield best results.
I'm so glad Tony told me to go the 434 as I was going to stick to a 427.
I am a fan of having everything matched.

 

Did some more research on this AFR head and after finding conflicting results, I contacted Tony for the answer.
The question was what bore size does a 245cc head work best with.
Here is the answer from the man himself:

The AFR 245 head is designed (optimally) for anything running a 4.125 or larger bore but they even work OK on bores as small as the OEM LS3 bore (4.065)

Bottom line....the larger the bore....the more room around the valves (less shrouding) and the better the head breathes (naturally producing even better results).

4.065 is the absolute minimum recommended bore size.

I am betting the same applies to the trickflow 245 head also.

 

Where is this article where a AFR head is better than a TFS head? i done searched high and low and just cant seem to find it no where.

Anyway the Trick Flow 245 heads have a better valve angle than that of the box AFR 245 heads. Also what's recommended is not always what can be done. Same things said about the Ls7 head and a small bore 4.100 recommended.... They work on a bore of 4.060 as is. Same thing goes for the TFS 245's and a 4.030 bore...

 

I never said the AFR were better.
I assume they would be as they were updated.
Upon looking at the flow numbers the tfs heads do seem a little better.
It has an 8cc smaller exhaust port and yet flows a little more.
Intake valve is slightly smaller and flows almost the same as the AFR.
Valve angle I'm not too sure on but you might be right.
I hope I'm right to assume that Tony's reworked AFR will be superior to the trickflow in every way.

 

When i hear 427ci in the same sentence as TFS 245s i automatically think about this bad MF below.