some welding and some drilling.. for the most part.. the coolant on a trad. sbc goes through the intake where as the ltx vent through the back of the heads.. so it need's to be rerouted.. and a few other things..

 

Oil return holes,both end water passages,and intake bolt holes,bypass holes in the back of the head.

 

Be specific please!

 

About $500.00 worth and that's the only way I know how to put it as I did in my previous post.
That's all there is to it.

 

If you are gonna run this "type" of head, which in my mind would only be used in the quest of serious power..why would an "off the shelf" cam even be considered?The torqu curve is more influenced by ICL and LSA than duration IMO, of course they all go hand in hand.
There is a limit to port volume vs cubic inches, 240cc port on a 302..well that aint a good matchup. IMO


David

 

Eh Ford sux.. lol.. obviously they're is a bit of common sense that need's to be employed in such situation's.. but if your looking for a 10K rpm 302.. then you might be in the right place.. lol..

 

See that's my point: it's hard to determine where the limits for things like this lie because the general consensus seems to be that you should only use X part if you plan on making X amount of horsepower. In other words, is the reason you never see somebody running a head like a SB2.2 on a stock bottom end Hotcammed LT1 redlining at 6,500 because that head won't work for that RPM range with those cubes or simply because nobody's been crazy enough to drop that kinda cash to "only" make the kind've power that that combo would produce?

 

You are soooo correct.
A 240CC runner on one head may have the CSA the same as a 225CC runner in another head. It's the length guys.Just 'cause it is a 240CC runner don't mean jack when comparing different heads. Ya got to know the centerline length to see if they are close to the same length. If one is higher than the other then the port will be longer thus more CC's.
A big runner(CSA not CC's)on a small CID engine ya will have it set up to turn the snot out of it. If ya want it to do that then ya build accordingly with the parts to make it do that.
A 240CC runner is NO detriment to a 383 or 396 or 406 or 427CID.

 

AGain why would you put a damn Hotcam in ANYTHING? There have been SB2 heads on a few 383 and 396 combos on this board that made SERIOUS power, there are varying levels of SB2 heads also, they could flow as little as 300 cfm or as much as 400 cfm..a little common sense plays a big role here.....conventional wisdom is being tested this day and age as far as port volume vs cubic inches vs cfm rules stand, and have stood for many years....but EFI and cam technology are breaking those old school rules.

BTW Chevy DID make a 302 less we forget


David

 

SB2.2 can be made to flow in the 400/425+ CFM range and NASCAR gets out of the pits with them.
Mainly ya don't see them much is the cost factor and guys don't know what to do with 700/800+FWHP on the street.There are several that are making 800+FWHP with the SB2.2's but everything for the valve train is special and costs a plenty.


The average guy isn't that serious.
Wish I had a set,'cause I AM that serious.

 

I think just until recently people have been venturing off into the realm of more custom setup's, such as the SB2's, and what not.. Our LTx market has pretty much stalled for the better part of the last few years and the product's that have come out are well lackluster as far as the time's go.. People are making more power than ever out of the stock casting's such as LE,AI, etc.. And considering they're making over 400+rwhp AFR's casting's which are pretty much the only mainstream "race" head avail for our car's.. And it's pretty lackluster compared to some of the stuff avail for the Gen 1.. Lot's of us have outgrown what can be had w/ off the shelf stuff.. but like many other things it come's at a cost.. big dollar heads,machining, etc etc.. Many just say i'll stick w/ 420rwhp or so and deal w/ it.. anymore than that they go LS1 and do that. Me on the other hand.. feel that folk's have been going real fast on Gen 1 sbc' way before my time and they'll be doing it long after.. So i chose to go to a converted Gen 1 head and i feel that alot of folk's are going to start stepping up as well as it get's more and more common and you'll start seein' 500rwhp lt1's just like you do Ls1's..

 

Ok, so, uh, does anybody have any numbers with these heads? Let me know what you've got! I have some people trying to talk me into some Dart heads. If I can make bookus of power on some SB2 heads, then I will go into that.

 

n20dave on here made 770hp on motor w/ a set of sb2.2's.. that's only one i know lt1 based..

 

http://web.camaross.com/forums/showthread.php?t=420169

 

A guy on the VETTE forum made 800+ or that is what is stated. At 400CFM that's capable of around 825FWHP if everything else is right.