Here's some quick answers to your questions Josh. These are by no means the final answer, but more like guidlines.

For a rear end you will start breaking stuff either immediatly or about when you start breaking into the 13's in the quarter. Which with a good setup will take about 300 hp and good traction. The stock rearend is weak no questions about it, they were designed for Vega's with 4 bangers and GM decided to put them in everything. You can build up your rearend or go aftermarket.

The tranny is another hit or miss area. Some people break them when there are stock and others have ran in the 10's with them. If you get a good rebuild by some one who knows what they are doing and add a transgo shift kit it should be good for 12's before the converter and some internal parts start ripping apart. Stay away from b&m shift kits, they killed 2 of my trannies before I figured out what was causing it. Also you can swap in a th350 or th400 with some available swap kits that give your torque arm a place to connect to. They can be built up for more power cheaper but you give up overdrive and the 700 has a lower first gear.

As for a motor, 350's are cheap, like 100-200 gets you a rebuildable core. 400's are expensive and impossible to find. Count on 500-1000 for a rebuildable core. It cost only about 150-200 more to stroke your 350 to a 383 so thats why so many people want to do it. A big block will swap, but it's only for those who have the knowledge and the will power to make it work. A big block will bolt right in. Same motor mounts, it is just 2" longer and 2" higher. Price wise they are expensive too. figure 500-1500 for a rebuildable core. Also all small blocks are the same size demensionly. So get out your tape measure and start measureing.

Finaly you don't sound too familiar with camaro's or chevy's in general. Are you sure you need to be just throwing mad dollars trying to get all this motor in your car just yet? I'm not trying to offend but you might just want to start small. Try installing headers and a cat back exhaust, maybe a set of gears and get your hands greasy on your car. You'll learn alot about it just working on it.

Hope this helps and everybody else just fill in the blanks where they feel fit.

 

My dream sbc would probably be a 434. There are a lot of different bore/stroke combos you can go with and there is also a lot of money you can spend. Just go with what you can afford and what will meet your goals.

 

Do they still have that 900 CFM holley tbi readily available? I just want the tbi but last I heard it was a rather pricey special order item. Id like to run a perky 400 sb and be able to feed it adiquatly both air and fuel wise.

 

Here's more about dual tbi.

http://www.454ss.com/cgi-bin/2004for...num=1072494346

Acording to a guy in this thread, you CAN run four injectors wired in series with the stock ECM.
This confuses me..

 

I've read that thread before too. I think there is still debate as to whether or not 4 injectors will run off of the stock ECM. I think it can work that all 4 will fire but from a DIY-Promer perspective I think they're saying it doesn't work like it is supposed to, just a thought.

I'm pretty sure a guy on here ran 4 injectors back a while ago too, "Dan W" I think.

 

It can be done but theres the problem that there really isnt enough current to run them at high speeds. Running them in parallel really isnt an option either since neither the transisters, ecm, or wiring is set up for that kind of current draw. An external injector driver can cure this but there is also the problem of what happens with four 65 or 85 pph injectors trying to meter a tiny bit of fuel at idle. I was thinking of using one the ecms outputs to activate the injector driver when the second set of throttle blades opens up, say at 50 WOT or whatever it will end up being. That way Ill only have two injectors to worry about at low loads and at high loads ill have at least 250 pph of fuel to work with. The outputs arnt that bad, both the smog pump outputs can be easily comandeered and made to turn on at will. Dont know how the code to handle the fueling at the changeover will be, though or how itll react while all four are being brought online. Looks like the biggest problem might be getting a 4 bbl TBI. New theyre listed as discontinued and not too many people seem to be parting with used ones, and you can bet that theyll be pricey. The only ones that I see floating around are the older ones with the crap injectors. Good for a multipoint conversion but not much use for a tbi system.

 

"In series" Is how Howell has the 700cfm Holley 4bbl TBI wired to work with the motor that i'm building. It will be run with the 8746 ECM. Everyone sayes that it won't work but Howell asures me it will and I've talked to someone on this board that they helped with the wiring of another 4bbl TBI, he said his ran fine too. I don't know how it'll turn out, if it don't work I was thinking about going with Holley's multi-point setup. I only had to give $250 for the 4bbl TBI.

 

Probably a better solution would be to run a secondary injector driver so you dont have to worry about the injectors getting flakey. Be a good setup on a healthy big block

 

I keep hearing that there will be troubles at high speeds.
Anyone know at what ~RPM this will happen?

 

You're asking a ton of very basic questions (basic to many here -- but perhaps not to you).... and the answers could fill books. So it might be a whole lot better for you to realistically tell us how much money you really plan to spend, and we can steer you to the appropriate engine build.

I will also suggest you get a copy of David Vizard's book on small block Chevy engine building.

 

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Basically, yes, bigger is better, but there are a few exceptions. To get 454 cubic inches out of a small block you must have an aftermarket block. Everything depends on how much $ you are willing to fork out.

 

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http://www.theengineshop.com/newstuff8.shtml

Price in Jeg's: Longblock, $10,499.99 ; Shortblock, $4694.99

I worry about the .200" cylinder wall thickness in terms of reliability, however. I wouldn't go above the 427, but that's just me.

 

felpro has a special gasket application for that motor...

 

Hears a link to the Bill Mitchell 454ci. 600hp sbc, feast your eyes on this bad boy.454sbc Hope you enjoy!

Steve

 

I can understand repeating what someone says, but posting the same link? Isn't this a little excessive?

 

Sorry Smurf, it was late and I didn't catch it. I would never want to be excessive. Unless your talking about horsepower.

Steve

 

Ohh...thats pretty... I have a 94 GMC Suburban with the 7.4L BBC 454 in it. That thing is a B-E-A-S-T. When that thing was new it could have pulled a 17 in the 1/4, no exageration! Gah, that is most definetly my favorite engine...

Bruce (90RS305)

 

i would tend to go with the Shafiroff 434... less money the the 454
675hp

http://www.shafiroff.com/434_sportsengine.asp

http://www.shafiroff.com/434_595_engine.asp

 

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434 is stroked , and bored .030 over.

basicly it is a SBC 427 stroker kit, .030 over.

 

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Hey Dewey, I like that engine also, BUT I don't think I would want to run race gas all the time. 14/1cr is pretty tuff to run on the street. Makes a killer race engine though. The Bill Mitchell 427 or 454 will run on premo pump gas, so I would have to go with one of these for a street car. Now the real question is, can I make 600hp with the BM454 with a 454tb and 90# injectors at a 150psi?

Steve

 

150 PSI ? i dont think you can run GM injectors that high. GM i think in older TB applications ran 12 lbs at 80% duty. maybe 20 lbs MAX and that takes a LT pump or aftermarket. my 85 vette pump we measured at 21 lbs B4 the injector unregulated? sound right guys? 4 90 lb inj is the way to go. SY1 with dual 454 TBs bored out to whatever and tied into modified ECU to run 4 of those injs...whatt manifold did original Z28 (302) use? check GM performance parts on that.

 

Sorry Ronny, I was just joking about running a 600hp engine with a stock tbi system. Dreaming I guess.

Steve

 

no no a party on crossfire is building a 4 x one barrell engine right now with a custom plate on SY1 manifold. due to fact he needs more CFMS and LBS. anything possible if you have the knowledge and $$$$$