Generally I would say 4v because 4v>2v. But I would go 2v build. I love the little 2v's. I just need to forge mine then crank up the boost :good:


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Generally I would agree but this is the "b" head motor and obviously it is not that desirable. The technology these days with the use of the 2v has really made it a viable choice over the early 4v motors.

If that is not the case please someone correct me and show me the error in my ways. Also show me where I can build the 4v head for cheaper and be able to run the same HP. I mean the "B" headed 4v is really only ahead of it by about 40 HP over the PI 2v ( pretty laughable really).

 

Junk the B heads switch to C heads, never look back.

 

100% agree. C heads and be done. Simple, NOT expensive if you look around for deals. Mach 1 intakes are affordable and flow great. 99-01 heads or the 03 and up C heads aren't very expensive. Search the modular classifieds. Use the stock 96-98 cams you already have in the C heads and go Vortech or turbo. Tried & true way.

 

Here lies the problem....finding them now is starting to be pretty difficult and if you do they are a little more than what I want to spend. I am not being cheap I am just being realistic. Money at the moment is not the issue. It to me is more about principle lol. If I can build a 2v motor for about half the price..lets say $5000 instead of $9000 and only be off about 50-60 hp it would be just stupid to go with the "B" headed 4v.

 

don't limit yourself to a KB for a mod motor.
They are great blowers, but when you start to push big numbers a centri or turbo may be better suited.

 

I was planing turbo, I was just giving an example of the more choices you have for a 2v setup. Also the price to upgrade to "C" heads to me is greater than just using some PI heads and porting them and some decent turbo cams.

If someone really likes the "B" heads I might just trade them for some PI heads. I am just going to use the teksid block for the base.

 

I got some ported PI heads with MPH blower cams if you want to go that route.

 

That might be an option, let me see if I can find the PI intake for a decent price around here.

 

I am still using them on my car as of today, so no rush. lol

 

lol same here. My wife is retiring early and the company is giving her one hell of a retirement package. We will be moving to the DFW area in August so I will be giving my employer my 2 weeks at the end of June so I will be doing all this work during the month of July or during the first 6 months of moving to DFW. That is what it takes for in state tuition at Texas A&M where I will be finishing my geology degree. So we have time lol.

BTW what cam does your heads have exactly? Will they work for a Turbo?

 

not sure how turbo friendly they are.
They are MPH blower cams, so you could give Tim Barth a call at Mr. Norms garage as they are his cams from back in the day.

Texas A&M satellite school or College Station? DFW and College Station are pretty far apart.

 

Texas A&M satellite school or College Station? DFW and College Station are pretty far apart.

They have a campus close to DFW,so satellite school. But I will go to all the home Football games lol. Especially against my Bama boys Roll Tide Roll. I will probably be the only student with all Bama attire.

 

There are a couple local car clubs in college station if you want to start to get to know some locals.
BCSstreet is one of them if you want to join up there.

 

I may just do that.

 

From what I've seen, a properly set up turbo 4V will make much more power than a 2V at the same boost level. And, it is more detonation resistant and seems more reliable.

 

Could you give me your build list of your turbo setup?

 

I would not say one is more reliable than the other, but yes, 4V heads flow better than even ported 2V heads and will make more power.
It boils down to what power you want to make and what you want to spend. Both can make lots of power on boost.

 

I speak from my own experience and I'm not anti 2v by any means.

C heads are more expensive than PI heads because they are of superior design. They cost more but make more power. So if cost is your only consideration then yeah go ahead put cop car/truck heads on it and save some money.

I already went through that and I wouldn't recommend it. Just my .02

 

So is there really any hope for the "B" heads that I have?

Is there any saving grace for them?

 

The hope is they make big power with boost.

 

B heads make huge power with boost, yes. I had ported B heads and so do many others. A friend is running in the 8's with them and a stock intake, no problem. They are a very viable cheaper option to 4V power and respond very well to boost. Want even better, get the C heads. Better yet, get the FordGT heads. Like mentioned, it also depends on what your goals are.

As far as my set-up, I'm not sure exactly what you want but here are the basics. If you want more info, let me know.

5.3L big bore stroker with BOSS iron block, Kellog stroker crank, Oliver billet rods, 10:1
Ported FordGT heads, stock valves/springs
FR500 cams
Ford Racing FR500C intake
Twin 6266 turbos/custom set-up
4R70W
Supporting mods (fuel system, injectors, etc)

I went slightly overboard on mine so you can do it more economically than I did, lol.

 

B heads are only an issue if you want to run a kennebell. Or you could run the 2.1 with meth injection. They don't offer a bigger option for it because the intercooler won't fit

 

B-heads are great with boost. Their downfall and the reason people hate them so much is because they arent good N/A and they are an older head, among myths. Research into them, B heads actually outflow several other popular 4v heads out there. IMRC delete and boost, roll out.

My car is a B-head 10.1:1 and on a pretty conservative tune, made 628hp/611tq on 16psi of boost, 70mm On3 turbo, Dynojet numbers.

 

Thank you Turbo98 and Camfox, you guys make me feel a little better about the "B" heads. So the consensus is that the "B" heads benefit better with boosted applications. Which is what I am doing anyway with a turbo. I have a bridgeport so I can do most of the porting myself.

So Turbo98 do you have any idea if the fr500 cams will work on my heads? I guess I could look it up myself but if you know off the top of your head it would help. Also who did you go thru for the stroker kit?


Camfox did you go with On3 injectors and MAF?

 

Yes, the FR500 cams will work with the B heads. The ported B heads will do well with a turbo for sure.

 

Ok you guys convinced me(I knew there was a reason for me joining the forums) to use and port the "B" heads.

Now the next dilemma, for my budget. Do I stroke the motor or do I go stock stroke, and use that cash to rebuild the heads with the fr500 cams ( or comp cams). It is not that expensive to forge the stock stroke, because the stock crank on a cobra is already forged. So you guys are doing well in advising me, so advise away. Thanks guys.

 

I wouldn't stroke. I've been told by my tuner to skip it myself because its only good for around 50hp and money is better spent elsewhere in the build.


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Stroke if it fits in your budget, it gets you torque which is where the B heads weakness is. If you are going after a turbo build, B head is AWESOME... I've made 650whp @ 20 psi with a $700 66mm borg warner and 8.xx:1 compression and rod/piston only engines. I did this on a few cars with stock 96-98 cams and B heads, fast spool and DD manners. If your considerations are turbo, what manifold kenne bell has is of no concern.

Josh Levin.

 

Yeah the money was either to stroke or to rebuild the heads with larger cams.

So far you guys seem to lean toward the head rebuild then?

 

As my personal opinion rebuild the heads with good valves, gasket match the heads and the short turn on the intake side. Do good rods pistons and go. I would also pair that with a shorter runner intake. I'm using a Hamilton Clark myself. I know I will be giving up some torque but I've been there done that an I'm fine with it.

When you get to DFW let me know the mustang hobby is well represented here

 

When you get to DFW let me know the mustang hobby is well represented here

I will definitely be joining some club.

So it looks like I will be doing the head rebuild then. I am looking at the FR500 kit it has everything in including the valves ($1600), is that a decent price. Or do you guys have a different combo for cams that would be a lot better.

So it looks like this thread will end up being my build thread.

 

I'm a big fan of the longer stroke. I agree that if it fits your budget, do it. It will help some on the low end and get the turbo moving faster. B heads are great for a big power budget build for sure.

 

Stay stock stroke.