Right now my project is a 92 vert. I'm going to build a large cid small block for her. Nothing smaller than 434 cid, but could be as large as 480-500 cid if I buy the block I'm looking at. How much motor will the fuel injection feed? What about bigger injectors? Are the runners capable of enough cfm?

 

Are the 480+ cid small blocks raised deck? If so what type of hood will you use or is that even an issue?

 

ive never heard of a sb bigger that 472ci, but there may be a way to go bigger.

are you going to do this with an lt-x motor?

what block did you have in mind?

if you use a gen 1 block you could use a super vic efi intake and mono blade t/b. most likely you would need a dfi. you could choose injectors based on estimated hp output, like 50lb'ers .

what runners are you refering to?

 

I'd like to hear more about that block you're looking at.

What fuel injection is "the fuel injection"? What runners are "the runners"? Surely you don't mean stock TPI runners. They can't even feed a stock 350 cid TPI engine properly.

RACE ON!!!

 

i see know reason to go bigger than a 434. i know many people that are making 600+ hp and still streetable. im building a 396ci now and it will be 600 hp and still streetable. i couldve s/c it and made 850 hp if wanted but for another 65k its really not worth it, for me at least. ill just spray it..

 

"For another 65k" you could have a 2006, ZO6.

RACE ON!!!

 

sorry cfi... i meant 6k for supercharger setup..

 

I believe there are guys on this forum running Turbo / SC set ups making close to 1000 hp, fuel injected, so I'm certain there is a system out there for you. Nothing from the stock F.I. set up will really come close. An Accel Gen 7 system will be capable of handling the electronic management.

What else can you tell us about your planned build? The more information the better.

 

I'm assuming you're looking at one of just a couple of blocks; either a tall-deck GMPP Rocket Block or a Dart Little 'M' tall-deck block. Those are the only two capable of making a "nickle" small block...

I guess my main question is: Why? The simple truth is if you're after max power and aren't planning on running an "unconventional" set of cylinder heads then 434" is about as large as I'd go... For max effort 23 degree heads simply don't cut it for larger cube engines, you'd need to step up to something like an 18*, 15*, or SB2/Canted Valve heads.

As for EFI; if you want ease of tunability you'll be running a stand-alone. FAST, Accel DFI, Electromotive, BS-3, etc... For your intake manifold you need nothing short of an EFI single plane or even a sheet-metal manifold. All of this in conjunction with a tall deck block brings us to fitment issues; you WILL be installing a cowl induction hood if you plan on running something like this. Then we go into headers; personally I wouldn't run anything smaller than a 1 7/8" primary header on a 434" motor even though there are those that do run smaller headers; on a mega-cube small block with exotic heads you'll be looking at primaries of 2" or better (mine are 2 1/8") which means a fabricated set of headers.

I can give you all the info you want regarding big (and mega-big) small blocks and what type of induction, EFI, headers, etc to run on them. But you're about to spend a very large amount of money to do this the right way. I'm not trying to discourage you but you might be better off looking at forced induction instead... Oh, and a 'Vert ain't exactly where I'd start a huge power infusion unless you're planning on caging it.
-Jeb

 

Jburnett hit the nail on the head, I have access to a used GM rocket block right now, it's is 461 cid with a 4.125" stroke crank. The lunati crank in it cracked when a Eagle h-beam came apart at the 3/8 mile dirt track in a UMP modified. I'll buy either a 4.250" or a 4.500" stroker crank for her with probably a set of Dyer billet rods, JE pistons,and a proper roller cam for the app. As far as heads if I didn't go with EFI I would run a 18 degree Protopline, with a single dominator. I plan on customizing the hood of the car anyway, so clearance is no problem. The other block is aluminun from Dart. It too has a .300" raised cam journals for big stroker cranks. Thinking about the all alum approach to get some weight off the front of the car, so it'll have more rear weight %. My partner(who has a 98 vert and is planning a mega-stoker too) and I build engines so all I have in it is parts. I want a low 8 sec. street strip car. No spray, s/c for the vette are crazy money. I know 800-1000hp on the street is insane but. Nothing excessed like excess! Driveline is the next concern. Tranny is covered I know Steve Griner personally. What about diff, half shafts, etc. As far as the vert goes I'm going to make a custom hard top for it. I know that will get negative comments, but it's my project. I want my car to be different.