If you had the choice between these two aswome heads to go on a stroker. Which one would you choose and why?. Im sorry if it doesnt belong here but seeing as though alot of people in here are familiar with the two Id thought I would ask and see what everybodys opinion on it was.

 

Well since I have seen both it's hard to say. The Sb2's are easier to come by and are probably cheaper to run. The 32v heads take a lot of work and the rocker setup is not the best thing I have ever seen but the curtain area of the 4v heads will definately be usefull.

Bret

 

So in your opinion, the sb2.2 would be the btter bang for the buck?. And which one do you think has the most power potensial from say 3k-8k?.

 

There is more R&D in the Sb2 heads. If you put them on a large enough bore I don't think you will have a issue. I've seen Darrin Morgan say he's gotten 440cfm out of them.

SB2.2 4.000 bore 2.070 valve, 29.5cc chamber, for small 4cylinder comp eliminator engine

.2 136
.3 227
.4 297
.5 348
.6 360
.7 371
.8 382
.9 384
1 388

SB2.2 Standard NASCAR head from three years ago. 48cc chamber 4.185 bore 2.180 valve

.2 161
.3 236
.4 312
.5 371
.6 402
.7 405
.8 412
.9 415
1 418


SB2.2 Standard NASCAR head now. 38cc chamber, 4.185 bore 2.180 valve


.2 145
.3 225
.4 300
.5 375
.6 415
.7 426
.8 443
.9 451
1 453

SB2.2 2.200 valve 4.200 bore. 38cc chamber

.2 152
.3 226
.4 305
.5 375
.6 418
.7 429
.8 446
.9 453
1 456

I will know soon enough how much flow a 32V head can do.

Bret

 

Don't forget the "coolness factor" of having a 32 valve SBC in your Rambler.

Folks that do this kind of thing have a second job to pay for their toys. Right UB?

 

Nothing about this would be cheap or easy, but the 4V solution would be so difficult due to the amount of custom work required that it would make sense, to me, in only two sorts of circumstances.

1. You have pile of cash and could go to someone like Bret and just say: make it work, let me know when it's done and how much I owe you.

2. You have high level fabrication skills, access to tools, etc. and could do it all yourself.

Though far from a "bolt-on", the SB2 route could be a middle ground kind of thing. Do some yourself, farm out some, some things would be off the shelf, and so on.

Rich

 

Bang for the buck = SB2.2

CF (cool factor) = 32V

If I were gung ho on a 32 valver I'd just find an LT5 and find a way to make it work, but that's just me.

As for building an SB2.2 motor, or shall I say... having someone build you one... make sure the builder has experience dealing specifically with these heads. There are a number of things about them that are quite different from the norm.

The SB2, if built right, will make about as much power as you could ever handle in a street car.

-Mindgame

 

Are there any headers that fit the sb2.2's that will work with an F-body?.

 

No, you'll need a custom job. Budget in ~$1500+ for a well designed header.

-Mindgame

 

A guy on the Corvette board dyno'ed over 800FWHP with SB2 heads-- On Motor.

 

If you ever come across a chance to buy a set of the Dominion/Arao 32V heads...RUN AWAY! BEAT IT! SCRAM! VAMOOSE! TAKE A POWDER! DISAPPEAR! etc. They will only break yer heart, drain yer bank account, and make ya "unstable!"

 

I think the "claim" was more like upper 800's wasn't it... 875 or something like that??

I'd have to see it to believe it.

Getting more than 2hp per cid on a large smallblock is extremely difficult without going to a full race engine build. BTDT.

-Mindgame

 

Any links to these SBC2.2 heads?

 

It was over 800 and he turned it on up there to get it. It was a full on race build.
2 to the cube just takes planning and MONEY.Not hard if ya don't compromise the parts.

 

We did 2.1 & looking back.... damn, it's been close to twelve years ago now. 504 ci small block and that IS a big feat with an engine that size LR. You're right about the money... most of mine went into trying different intake configurations..... split dominators, dual dominators, you name it. When you get to that level of things it becomes an R&D project and none of that comes cheap or "easy".

The engine we're talking about makes ~880 from what I remember. It's 434 cid with ~13:1 comp and peaks at ~7100rpm. Sorry, not going to make 880 at those revs, even with the sb2.2. You'll need to go north of 7500 to get there with more static/dynamic compression and I do speak from experience.

I was born at night... just not last night.

-Mindgame