twisted wedge, or afr 165s?

[steel1212]

I've pretty much come down to these 2. I can't get the 185s as my pistons won't allow for the big valves but the twisted wedges allows you to use the bigger valves.

If the wedges is it worth it to get the cnc port work done thats about another 500-600$?

Check below for my setup.

 

[iskwezm]

I personally have ported Edelbrock RPM 1.90's,but I would rather have the AFR's

 

[brianj5600]

I'd get the tw over the 165s.

 

[steel1212]

iskwezm, would you pick the 165s over the twisted wedges? I can't get the 185s because of valve clearance.

Also if I go with the twisted wedges would it benifit my setup to buck up and get the cnc ported and polished ones?

 

[Sicarius428]

I doubt you would see too much of a difference on the dyno between either one because they flow almost the same numbers out of the box. If you are gonna get head work done anyways, no point in getting the AFR's because the cost difference that payed for the cnc milled ports will be done away with. IMO. I am very pleased with my twisted wedges but you really can't go wrong with either one.
http://www.fordmuscle.com/archives/2003/02/afr/index2.shtml
Here are some results from a quick google search.
Kevin

 

[SitDown]

AFR's for sure

 

[06cobra]

AFRs are a beautiful piece of work, and you can have them CNC ported from FACTORY... nothing gets better then that!

I too have the Edelbrock RPM 1.9s polished, they are a nice piece. ( I always druel over the AFRs

I would buy the Edelbrock RPM again, over the TW.

 

[iskwezm]

iskwezm, would you pick the 165s over the twisted wedges? I can't get the 185s because of valve clearance.

Also if I go with the twisted wedges would it benifit my setup to buck up and get the cnc ported and polished ones?

The only reason I "dislike" my RPM's is they are supposed to be a "replacement bolt on" but the chambers drop compression too much.I have just seen a lot more build ups using the AFR's.Obviously the 185's would flow more,but if you cant use them thats it.The TW is the only head i know of that you can uses a 2.02 valve without flycutting the piston if im not mistaken.

Have you checked out the CNC heads from Ford Peformance Solutions (f-p-s.com) they have some pretty good flow numbers.

 

[Max Power]

The only reason I "dislike" my RPM's is they are supposed to be a "replacement bolt on" but the chambers drop compression too much.I have just seen a lot more build ups using the AFR's.Obviously the 185's would flow more,but if you cant use them thats it.The TW is the only head i know of that you can uses a 2.02 valve without flycutting the piston if im not mistaken.

Correct me if I am wrong, but don't Edelbrocks and AFRs both have a 60cc chamber?

 

[iskwezm]

Correct me if I am wrong, but don't Edelbrocks and AFRs both have a 60cc chamber?

true,but i think Edelbrock claims to be a "direct replacement".I dont beleive thats true when you go from a 54cc with high compression to 60 cc low compression.

 

[Bullitt]

i'm perfectly happy with my TW heads. make great power (325+ to the wheels on a fairly mild setup) and room to grow. the valve springs also handle higher RPM just fine with no float (on OEM Ford hydraulic roller lifters) to 6500+ RPM

remember, you'll have to get pushrods that fit with the TW geometry (i don't know if you need different pushrods with AFRs or not).

 

[hobbyhorse]

You may still have clearance issues with the tws with your present cam. The 2.02 's on the tws will clear most pistons, but this is with mild cams. Someone who has tried a similiar combo might want to chime in.

 

[skywalker]

This is not the best way to do it, but unless you're building an all out racer, it should do fine for you:
http://www.forcefedhighperformance.com/tech_Isky.htm

 

[steel1212]

Well acording to that fordmuscle article I can't even use the Twisted wedges with my 230 at .050 cam anyway so I guess that sends me back to my original choice the AFR 165s

Thanks guys

 

[Max Power]

true,but i think Edelbrock claims to be a "direct replacement".I dont beleive thats true when you go from a 54cc with high compression to 60 cc low compression.

Well, since small block windsors range from 54cc to 67cc, I don't think any manufacturer will make a "direct replacement". If that's the only reason you don't buy em, that's fine, but none of the other heads are either.

They do have the bolt holes in all the right places, with the proper size threads, and steel inserts, which is nice.

 

[coolblue65]

Well acording to that fordmuscle article I can't even use the Twisted wedges with my 230 at .050 cam anyway so I guess that sends me back to my original choice the AFR 165s

Thanks guys

Do you know the maximum lift of your cam?

maximum lift allowed by TF heads is .540" or .600" for the Track Heat versions

You would have to have a fairly radical cam for it to not work.

Also, Trickflow just started selling factory CNC ported heads, they are claiming 50 RWHP more on 347 motor then there regular heads.

 

[65ShelbyClone]

TFS heads are like what, a grand? Another $600 for porting puts you in box stock AFR 165 territory for price. IMO, you could get more cylinder head flow for the same money with Tricks and you'd need pistons either way.

Keep in mind I do not and have not owned either cylinder head, but I did stay at a Holiday Inn Express last night.

 

[65fastback2+2]

Ive heard due to the valve placement in the TFS that the heads and valves wear considerbly faster than normal valve placement...

 

[jerry S]

Do you know the maximum lift of your cam?

maximum lift allowed by TF heads is .540" or .600" for the Track Heat versions

You would have to have a fairly radical cam for it to not work.

Also, Trickflow just started selling factory CNC ported heads, they are claiming 50 RWHP more on 347 motor then there regular heads.

Before settling on my RPM Performers, my first set of heads was a pair of TF TWs. My cam lift is 538 intake and 534 exhaust and even though I was within spec for the amount of lift for the TF TW heads, three valve springs broke on the first dyno run. The heads went back to Summit and I got the performers. I had a strong preference for the AFRs but they were no where to be found at the time.

 

[Dark Knight]

I like my 165's, wouldnt trade them... you can get 'em for $1299 with free shipping, talk to brian adams at http://www.adperformance.com/
you can get the AFR's with a 58cc chamber too...

duration plays as big a part in P/V clearance as lift does..