vader99

iTrader: (4)

Okay, so we all know that these are both very good heads.

Now, for my application with a smaller cam (tr 224 224 112+4), which one is going to give better low rpm response/torque for the street? My car will be a street car and I would rather not give up much bottomend torque if I don't have to.

Is the smaller-runnered afr 205 going to be significantly better on the bottomend/street than the larger-runnered tfs 215 or will it be not noticed? Is the larger cross sectional area of the tfs heads compensated for by their smaller valve angle to give similar low rpm response?

This is the only obstacle in my decision on picking heads, so any help would be appreciated.

Does anyone have first-hand driving experience with both types of heads?

Shawn @ VA Speed

iTrader: (3)

i would go with the 205's,you def dont need a big port,i love the trickflows but i think the 205 is better for what you want,plus you need roller rockers for the trickflows

Top Fuel

iTrader: (8)

maybe the TSP terminators might even be a better choice for you. have you looked into them?

vader99

iTrader: (4)

I thought about the terminators, but it is easier to find a needle in a hey stack than any real-world info about those heads. They seemed to have dropped off the face of the earth.

SSmokin99

iTrader: (7)

This is the same EXACT set up I'm looking to do.

vettenuts

iTrader: (4)

You are choosing between two excellent heads. I don't personally think you are going to see a huge difference between the two heads. What I would consider is customer service and other factors than the final hp you might achieve with either head. In all honesty, TFS hasn't had a major issue since they were introduced but they have also been on the market for less time than the AFR (LSx version). AFR ran into an issue with soft valves about a year or so ago. They put a public announcement out on this board and several others stating they would fix any head that ran into the problem, which they have since done. For an aftermarket company to state publicly they had an issue and were fixing it when you think about how long many companies warrantee performance products was a testiment to their customer support.

Another point to consider is AFR (Tony) is on this board every day answering questions and helping guys get the most from their setups. To me the answer would be based on several factors, with final dyno numbers only being one of them. I am removing my Darts in the spring, my AFR's arrive tomorrow so I guess you can figure out what I decided to do.

eamador11

i agree, AFR 205s already has proven they work exceptionally well with small cams.

mill them .024 and your car will move.

vader99

iTrader: (4)

Would milling them .024" be too much as far as DCR is concerned with my setup of 0.040" cometics and tr 224 224 567 567 112+4? Some say it will be fine and some say the DCR will be too high for regular pump gas.

vettenuts

iTrader: (4)

There is a calculator with all the LS1 specifications in it already, run the numbers and see how it comes out. I think it is in a sticky. I think 0.024 brings it down to a 62cc chamber, should be fine but verify with the calculator.

Tony Mamo @ AFR

iTrader: (13)

I give you a guarantee in writing our 6016 cam (224/228 .581 lift) is worth an easy 10 RWHP over the cam you have with no other changes and the exact same if not better street manners.

At $395 thats only $40 per pony.....I would strongly consider it. My "air dyno" may even be light at ten horses. Its going to carry the torque out the back significantly better....thats how the additional power will make itself available to you.

Tony

vader99

iTrader: (4)

Thanks Tony for your input.

I guess no one has direct hands-on experience with both of these heads on similar setups concerning bottomend power and torque. You'd think by now there would be some direct comparisons but I guess not.

AFR has great customers service and other intangibles - probably be wise to go with them just for that reason.

dshag

iTrader: (1)

I had similiar questions heres a great thread https://ls1tech.com/forums/generation-iii-internal-engine/732392-recipe-500-rwhp-heads-cam.html

eamador11

I will say its not too much because tuners have milled more than that and have installed the much bigger G5x-3 cam. but as always, have it double checked before starting it.

vader99

iTrader: (4)

Ya, but the g5x3 will have much less dcr with the same setup than a smaller tr 224 112 so milling with that cam is safer.

eamador11

I can vouch for this as I have this exact cam in my car with the 205s. Well designed combination hands down. Do it right the first time and go with this cam. Smooth as hell inside the car yet has a nice lope sound outside. Pulls hard as f@#k!!

vettenuts

iTrader: (4)

I have this cam as too, well actually it arrives today. This is a proven combination and a lot of guys have made good power with this setup.