Ford 351C 2V Heads for Power, Ported oem 2V vs TFS alloy 2V
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- Опубликовано: 5 сен 2024
- Based off some of my previous Post’s, Articles & Vids on the 2V Cleveland Heads, we take a look here at the factory oem iron Ported Heads vs aftermarket alloy TFS 2V Heads.
Check it out🏁……..
I ported a set of 2V heads in the 80's. I raised my exhaust .100 and .050 on each side as well, but did not know about port stuffers back then. I put the 4V valves in them and removed a ton of metal from the bowl areas. You answered many questions I have had all these years about how good they really were. Those heads screamed! Thanks guys! 😃
Right on, wow that’s cool👌🏼
Thanks for tuning in👍🏼🏁
Great video on the 2V capabilities. If I wasn't so dam old I would do a comparison of the fully ported 2V I'm running now vs the bowl and port matched 2V Aussie heads vs the stock 4V quench heads.
Gearbanger, that would be an interesting comparison between those 3 popular head choices. I’m pretty damn old and tired too but I try not to let it interfere with my enjoyment of all things Cleveland related 👍👌🏁🏁🏁.
@@danielwilson6665 I may consider it once I get the truck out of the body shop and figure out how to get what power I have to the ground. As it is with the 4sp and 3:91 gears it's a tire burner.
Smashing presentation.
Thank you i appreciate that👍🏼🏁
Good one always like your videos always good content thanks for sharing 👍 😊
Thank you Terry, really appreciate it 👍🏼🏁
Great Vid yanks, I think Aluminum is my favorite metal.
Thanks Tim👍🏼,aftermarket alloys can’t beat it👌🏼🏁. Vintage Character n Soul………irons baby😎🏁
Had a set of 4Vs with epoxied inlets worked bowl area. At 600 th. lift flowed Inlet 321 CFM Ex 219 CFM
👌🏼🏁
bad ass
Awesome Video!
thanks RG 👍🏼🏁
That exhaust flow was with a pipe attached which always shows higher numbers and alot of that extra 70hp would have been from just going from open camber to closed camber but still nice heads
Right on, I’m sure they flow heads all in the same or similar fashion between shops🤷🏻♂️, the big 225cc version was tested on a 4.1” bore which makes a difference compared to the 195cc being tested on a 4.030 tube, forgot to mention that in the vid……. But hey they do have the slight upper advantage over a set of ported oem 2Vs at the end🤷🏻♂️👍🏼🏁
🥝✔️ Bob Kotmel found the same thing. Right up to the 490 HP net on the COME Racing Issy and Sam Blumstien dyno back in the Noughties, modified 2V Closed chambers and an early version of the single plan Parker Funnelweb style intake. Your info is golden, 69Janks
Good review.👍
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Another well done comparison video, my friend 👍. I agree that with the proper CNC machine work, the OEM 2-V iron heads have great potential.
But I still think that you can’t make chicken salad out of chicken shit. The TFS aluminum 2-V heads would always be my choice because of all the reasons that you explained in this video.
Now I need to find a large piece of bread to make a iron head chicken shit sandwich 💩😂😉.
Haha😂 good example DW 👍🏼🏁
@@69JANKS … I especially like the comparison done between the poured casting molds of the internal 2-V and 4-V exhaust port dimensions. I never realized the 2-V exhaust port had such a smooth transition over the “hump” that really hurts the flow so badly in the stock 4-V exhaust ports. Well done.
Now back to making that iron 2-V chicken 💩sandwich. 😁
@@danielwilson6665 haha 😂🥪 🏁, yes the 2V still has a drop n fall on the exhst floor, just not as vicious as the 4V floor 🤷🏻♂️🏁, but then again 2 very different sizes in cc to one another 👍🏼🏁
I've got a 393 4v flowed 330 CFM. TFC manifold solid roller 11.7 compression only made 556 HP🤔
556 is still tuff HP, but all depends on the Combination too, Cam??……
330cfm on a 4V is big numbers, that’ll support like an easy 650’ish hp but on the right deal eg: Compression, Cam spec & higher rpm’s 🤷🏻♂️🏁
She rolled over at 6400 stopped making power cam comp 248@254 about 650 lift 108 lobe separation solid roller.
@@mansourjreige677 man that’s not working at all, good power for low rpm🏁
That could of gone with a slightly bigger duration & even lift” to get them heads breathing, it has the Ci for it👌🏼….. reasonable Comp too, borderline pump gas?
@@69JANKS yes 98 octane BP Ultimate 800 double pumper hp .178 4 into 1 primaries
@@mansourjreige677 pretty cool👌🏼, are they filled 4V intake ports ?
I've got a 351 with the 195cc TF heads and the Edelbrock RPM Air Gap intake. I wonder what the power difference would be swapping to the TF single plane intake?
That will depend on the combination you have, air gab is pretty good up to a hot street combo 👌🏼🏁
Air gap is actually pretty awesome to 6500-7000 rpm. In the EFI days you would always see the EFI intakes making more low to mid range torque than even dual plane carb intakes... The air gap at least on the Chevy LS makes comparable and sometimes slightly MORE low to mid range torque than the popular EFI intakes for that and it makes more top end power. So Edelbrock really thought that design out and it's very good.
2 different dynos in 2 different countries. I dont doubt the alloys are better but I would take the dyno figures with a grain of salt.
Right on DM, yes maybe🤷🏻♂️
We sorta just get the idea through the combinations in them examples, Ci , pump gas friendly & the operating rpm
The alloy heads have way more potential put it that way, ported irons can hold their own no doubt.
Check out my Community Posts also👍🏼🏁
I got a crazy question or two... What did the unported iron 2V heads flow? How about an unported closed chamber 4V head? I'm trying to do math for a warmed over 351C for my Mustang, and a 408C for my Ranchero. Thanks for the help.
Stock 2V iron flow around 200’ish cfm @.550”-.600”
& 4V closed chambers flow 275cfm @.600”
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Thanks for the info. 👍@@69JANKS
My Stock unparted 1971 4v heads have flowed 275 on the intake with only a 3 angle valve job. no port work at all. I have 11 sets of these 4V heads and all flow 270 or more.
Im New to the Cleveland engines here ! looking to build new Cleveland what about those closed chamber 4V heads that I see on eBay are they any good just for the street
That’s them copies from SpeedMaster(procomp) I’d pass on those to be honest……would probably need a lot of going over. Just go for a set of aftermarket alloys or oem2V irons 👍🏼🏁
If you are building for the street, I would switch to a Aluminum, they will be a little down on flow, but the aluminum does a better job of Cooling, the Aluminum transfers heat much better, it also weighs 35 pounds less a head!! The other advantage is, nobody has built a Intake manifold in the last 45 years For the Cleveland 4v. any new design are For the 2 V Head.
Can i ask why you CNCed the early 2V cast low port heads and not the later polution cast higher intake port vertion. I never use the early pprepolution type, they are just to thin walled to get a good port job out off. Mike
Not sure what you mean MG?, so the 2V Cleveland iron is only one type……unless your referring to the large port 4V iron heads ?
@@69JANKS the prepolution ones were american cstings but not used their, but fron the 77 XC and on were a AU upgrade and the intakes were raised 2mm, thiker water jackets an a couple less CC in the canbers, these are the ones to use. I can send you picks.
@@michaelgiglio1571 oh ok🤷🏻♂️didn’t know that…….. only thought the open & closed chambers in 2V that’s all…..👍🏼🏁
@@69JANKS I didnt know much about the alloy indy race versions, etc. Thank for your information. Good segments.
@@michaelgiglio1571 thanks MG appreciate it & merry Christmas🎄🎅🏁
What to do, what to do??? I have a set of both 2v and 4v close chambers heads but both need rebuilding. With current shop rates for labour and upgraded parts (valves and hardened seats) is it worth it??
My engine guy says NO, get the trick Flo heads.
i hear ya ms, decisions….decisions🤷🏻♂️🏁
I hear ya, I got right at $1600 in mine parts and labor. If they don't work I guess I'll buy a boat and use em for anchors.
@@gearbanger57 it’ll be fine gb57, remember also these TFS heads are double that $ 🤷🏻♂️…….
The heads I see looks like smaller than two v??
Exhst Ports especially smaller & raised.
They are a “revised” 2V based head🏁
Where are the iron heads sold?
They are from down under, PavTek🇦🇺🏁
The alloys should be better but your comparing two different dynos on to different
Open chamber 2v sucks , not a good ideal to use