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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

cylinder head choices

  • Thread starter Thread starter BlackPearl955.0
  • Start date Start date Mar 22, 2008

BlackPearl955.0

New Member
Jun 8, 2007
126
1
0
Blashyrkh, Wisconsin
Mar 22, 2008
#1
  • Mar 22, 2008
  • #1
ok any opinions for a N/A 347?
combustion chamber size?
I want higher compression (any recomendations?)
setup plan
Boss 347 stroker
Titanium pistons (dished, flat, domed?)
custom grind cam
Victor 5.0 intake
75mm tb
28oz balance
A 100-200 shot of nitrous as well
Goals
450fwhp
420fwtq or more
(without the spray)

The options

AFR 185's
Nitrous exaust port (Y/N)?
What size chamber... 58cc, 61cc
sporting 2.020 intake and 1.600 exhaust valves.
69cc exhaust ports.
185cc have available as an option nitrous or blower exhaust ports featuring a 75cc ultra high flowing exhaust port. With AFR’s trademark 3/4" thick head deck, it’s no problem handling that additional cylinder pressure. Each head is also drilled for the larger 1/2" head bolt hole for maximum head gasket retention as a standard feature of this serious race piece in street disguise. Springs are good to .550" lift.

FMS GT40Z's
Premium stainless steel 2.02" intake M-6507-A304 and 1.60" M-6505-B304 exhaust valves
Uses M-6513-BH Beehive style valve springs with machined retainers and machined valve locks. Most hydraulic cams can be used with these springs. 130lbs @ 1.800", 293lbs. @ 1.200" and CB @ 1.085"
Includes laser cut guide plates M-6566-Z304D for use with 5/16" pushrods and 7/16" rocker studs
Requires M-6564-F351 roller rocker arms (not included)

Trickflow TWISTED WEDGE TRACK HEAT
Twisted Wedge heads feature an exclusive combustion chamber design. The patented 61cc chambers feature rotated intake and exhaust valves moved over the center of the cylinder bores. As a result of optimizing the valve locations, valve angles, and combustion chamber shape, the Twisted Wedge heads use stock height exhaust ports without power loss.
The heads are machined for 2.02" intake/1.60" exhaust valves to build top end power without sacrificing bottom end torque. They don’t require flycut pistons for use with cams up to the specifications listed—no other 2.02"-valved head for small block Ford offers these features!
The Twisted Wedge heads are built for heavy duty use, too. They have .56" thick combustion chamber walls and fire deck for strength without compromising cooling capacity. Additional support risers are strategically located in the water jacket for additional rigidity and head gasket integrity.

Edlebrock Performer series
EDLEBROCK ALL NEW AND IMPROVED DESIGN FOR EVEN MORE HORSE-POWER these heads are stud mount No other engine part improves the 5.0 engine than a set of free flowing cylinder heads. They are critical because they contain intake and exhaust ports, as well as valves and combustion chambers, that effect air in (combustion mixture) and air out (exhaust gas). Improving exhaust flow is the key to unlocking a 5.0's potential as well as improving air flow in and the size and shape of the combustion chamber, this all adds up to one fact, after market cylinder heads will vastly improve horsepower and performance on any Mustang. We highly recommend the quality lightweight Edelbrock Performer aluminum cylinder heads, that are well machined and fully assembled with high quality components, they feature helicoiled threaded inserts along with phospor bronze valve guides. These heads also feature 2.02"intake and 1.60" exhaust valves with 60cc combustion chambers.Because of the 2.02" intake valve these heads are for use with aftermarket pistons that have been notched for valve clearance.

any other options you guys can think of?
any other info on these heads?
I like the FMS Z heads so far or the AFR's
:SNSign:
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Mar 22, 2008
#2
  • Mar 22, 2008
  • #2
Go with AFR 205cc heads and the nitrous port.

Ed Curtis sells the AFR heads and can set you up with his custom camshaft and valvetrain to match.

Titanium pistons? Why not a nice forged lightweight aluminum piston?
 

earleys94gt

Active Member
Aug 31, 2003
1,223
16
49
Ashley, Ohio
Mar 22, 2008
#3
  • Mar 22, 2008
  • #3
+1 on the AFR 205's
 

BlackPearl955.0

New Member
Jun 8, 2007
126
1
0
Blashyrkh, Wisconsin
Mar 22, 2008
#4
  • Mar 22, 2008
  • #4
forged aluminium would be good too
I have heard good things about ed curtis and what he does.
how do I get ahold of this guy?
 
R

RAD

New Member
Jun 16, 2006
167
0
0
Mar 23, 2008
#5
  • Mar 23, 2008
  • #5
Ed's website: http://flowtechinduction.com/
 

blksn955.o

Founding Member
Mar 15, 2002
3,263
0
66
st.louis mo 314
Mar 23, 2008
#6
  • Mar 23, 2008
  • #6
I would say the AFR 205 or the newer larger CNC TFS heads or whatever they are called.

After having a buddy with a 347 and some TFS heads...you will never be able to tell me they are not a good head for a 347.

Either way 100% get a custom cam and talk with them as far as what intake combo to use as well. The big 3 cam guru's are Ed Curtis, Jay Allen, and Buddy Rawls (sp?)...all are VERY well known and VERY well respected guys.
 

BlackPearl955.0

New Member
Jun 8, 2007
126
1
0
Blashyrkh, Wisconsin
Mar 23, 2008
#7
  • Mar 23, 2008
  • #7
what stroker kits are you guys using as well
scat and eagle were the obvious but any othewr brands that work well?
 

blksn955.o

Founding Member
Mar 15, 2002
3,263
0
66
st.louis mo 314
Mar 23, 2008
#8
  • Mar 23, 2008
  • #8
Depends on what your budget is. Sonny B. (sp?) makes a good crank along with COLA...then you have oliver rods and JE pistons along with many many others.

Eagle makes a good setup and I would pick that before scat IMHO.
 

SVTCobra306

New Member
Oct 22, 2005
170
1
0
Ft. Bragg, NC
Mar 23, 2008
#9
  • Mar 23, 2008
  • #9
Yeah, for 450 HP you'll need AFR 205's, probably with the nitrous port. Hope you are willing to rev it a bit. I'm using a Scat forged crank with Mahle pistons (expensive bastards...) and 185's with an Ed C. cam and Cobra intake with port work. So far I have no solid numbers, it pissed some oil out the rear main on the dyno and slipped the clutch over 3900 RPM. We had 315 HP and 335 lbs torque at 3900 however and they were climbin'.. Peak should be just before 6K, so 345-350 RWHP on mine should be realistic.

My cam is mild on the duration side, and just over .600 lift on the intake... You will need way more than 230 duration IMHO to make the power you want.

Are you going with a 4.125 bore for 347 CI? I would have an engine builder look very close at the cylinder length on that Boss block before installing a 3.4" rotating assembly... Might wanna consider a Dart Sportsman setup from ADP..
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Mar 23, 2008
#10
  • Mar 23, 2008
  • #10
For your basic kits, I understand the Scats have the advantage.

For the nicer forged kits, choose your poison: Eagle or Scat...
 

Rick 91GT

Mustang Master
Nov 29, 1999
9,692
95
99
PA
Mar 23, 2008
#11
  • Mar 23, 2008
  • #11
If it is a street car I'd pick the 185 which will carry more port velocity then the 205.... IF it is more of a race set-up and some rpm 7000+, the 205 hands down and with a 4cc flat top you'll have around 10.5:1, plus I'd internal balance it and go solid roller

Never seen a Ti piston, but they would be a FORTUNE.. Any good aftermarket forged 2618 alum piston will work just fine.

I also wouldn't use a BOSS block for a 3.4" stroke, the cylinders are a little shallow and pull the ring way to far down, use a DART Sportsman.
 

SVTCobra306

New Member
Oct 22, 2005
170
1
0
Ft. Bragg, NC
Mar 23, 2008
#12
  • Mar 23, 2008
  • #12
OK looks like I misread the first post... flywheel HP, I thought you were looking for 450 at the wheels... 185's, a good intake (ask someone else, I'm stubborn and sticking to a Cobra) and most importantly, go custom on the cam. It's only 75 bucks or so more expensive for a custom from Ed C. compared to an off the shelf Comp grind, and would probably be the best seventy-five bucks you spend on the entire build.

One note: If you get the custom, decide on the combo for sure, get the cam delivered BEFORE you get the heads, the cam may be bigger than you expect, so you may need to change your valvespring package. I got a set of 185's from Keith Craft, then my custom cam came to .605 lift so we had to upgrade the spring package. I had anticipated less than .600 so that's what springs I had... lol. Dumb mistake on my part but was easily remedied.

Not to contradict myself, but the Boss Block cylinder thing came from a Mag, so take it at face value. I'd call ADP or get a good engine builder to check that out if I was planning to buy that setup personally. I don't think the shorter cylinder is much if any length difference compared to what is normally notched for a stroker anyway...
 

BlackPearl955.0

New Member
Jun 8, 2007
126
1
0
Blashyrkh, Wisconsin
Mar 23, 2008
#13
  • Mar 23, 2008
  • #13
so will the 205's slower port velocity hurt hp? I have been looking into darts blocks and am still considering it.
should I just go with the 205's or is it overkill. the bigger the better in my book... right?
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Mar 24, 2008
#14
  • Mar 24, 2008
  • #14
SVTCobra306 said:
OK looks like I misread the first post... flywheel HP, I thought you were looking for 450 at the wheels... 185's, a good intake (ask someone else, I'm stubborn and sticking to a Cobra) and most importantly, go custom on the cam. It's only 75 bucks or so more expensive for a custom from Ed C. compared to an off the shelf Comp grind, and would probably be the best seventy-five bucks you spend on the entire build.

One note: If you get the custom, decide on the combo for sure, get the cam delivered BEFORE you get the heads, the cam may be bigger than you expect, so you may need to change your valvespring package. I got a set of 185's from Keith Craft, then my custom cam came to .605 lift so we had to upgrade the spring package. I had anticipated less than .600 so that's what springs I had... lol. Dumb mistake on my part but was easily remedied.
Not to contradict myself, but the Boss Block cylinder thing came from a Mag, so take it at face value. I'd call ADP or get a good engine builder to check that out if I was planning to buy that setup personally. I don't think the shorter cylinder is much if any length difference compared to what is normally notched for a stroker anyway...
Click to expand...

You may want to approach that differently.

The camshaft should be picked last. Pick your heads from Ed, or better yet, let him pick them. He will then set you up with a camshaft to match the engine.

Cam after heads, not heads after cam
 

SVTCobra306

New Member
Oct 22, 2005
170
1
0
Ft. Bragg, NC
Mar 24, 2008
#15
  • Mar 24, 2008
  • #15
Read carefully... I recommended CHOOSING the head first, but find out the cam specs before ORDERING the heads because your valvetrain package may change when you find out the cam specs. By no means am I saying PICK the cam before the heads...

Of course, if the money is there you could also solve all of it by simply getting the heads and cam both at the same time from Ed..
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Mar 24, 2008
#16
  • Mar 24, 2008
  • #16
You wrote...

get the cam delivered BEFORE you get the heads

That is why I took it as I did.

Your custom camshaft guy should tell you that a valvetrain upgrade will be needed.

Just in case there was any confusion, I was just stating that the camshaft should be the last part selected so it can be spec'd with all the parameters in mind.
 

Zero Signal

Active Member
Feb 24, 2003
2,633
2
46
Tucson, AZ
Mar 24, 2008
#17
  • Mar 24, 2008
  • #17
What about soem Brodix CNC heads. They should flow at least as well as the AFRs and probably have better castings.
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Mar 24, 2008
#18
  • Mar 24, 2008
  • #18
I like the valvetrain better on the AFR heads.

CNC ports and combustion chambers as well.

Brodix heads are not to bad.
 

BlackPearl955.0

New Member
Jun 8, 2007
126
1
0
Blashyrkh, Wisconsin
Mar 25, 2008
#19
  • Mar 25, 2008
  • #19
maybe when I talk to ed c he will have some advise about heads.
anybody running a DART block, and how is it?
any deals or places where they are cheap?
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Mar 25, 2008
#20
  • Mar 25, 2008
  • #20
Brian @ www.adperformance.com.

He will guide you through the entire bottomend build.

or you can go with Rick on this site @ www.rnhperformance.com.
 
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