bjuice

do you mean getting 500ci numbers and calling it a small block ?..i have to agree it takes a good person to get those numbers (ci) out of a small block....lol.....

Racefab57

I think a sb is a sb, even if you get close to 500 cubes out of it ! its in a small lite weight package !!!!! you cant go any bigger really , its a sbc AND THEY ARE THE GREATEST!!!!!!!!!!!!!!! MAY NOT WIN ALL THE TIME BUT I LOVE EM !!!! David. alum LITE WEIGHT SBC's forever! ive never considered anything else. WORLD PRODUCTS AND RODECKs FOREVER!!!!!! sorry I get excited

bjuice

I love it !!!....pLus your fixing to be a CAROLINA BOY SOON...there is hope for you yet in converting to BBC....LOL :wink: :wink: :roll:

Brian

camaro74454

Wow did The big blocks get some votes in there...Ok would it be fair to close voting now? Look tommy..you blinked and were passed.

Timmyboy86

if your shotting for over 500 hp or ever plan on having over 500 then go big block i made that mistake and cus myself everday if i only put 250 ontop of what i'm invested now i'd have a 600+ hp bigblock but instead i'm running a 500-550 hp small block.

billhendren

With the new Dart 4.5 bore spacing small block its easy to get over 550 cu.in,all it takes is $$$$$$$$$ Bill

chevguy65

Big Blocks are great, no doubt about it....what is even greater is driving around a BB car and putting him on the trailer and watching him go home after getting spanked by a lil ole SB :P :P :P

doubler

Bill, what happens to the size of the block at 550? I went to darts site and here is the race block specs...you can get 455 with this. Do you use the aluminum block to get 500 or is this a totally new block? Must be...HOw big is the bore on these new blokcs? I can see some advantages to this, lighter, power to weight etc. Anyway disavantages with the newer blocks?

BBC have to go to these much taller decks to get it, 11.1 deck...any new blocks for the BBC coming out to keep up with the "small motor"

Little M
Cast Iron
9.025"
4.00" 4.125"
350, 400
Standard SBC Bore & Location
Nodular Iron or Steel 4 - Bolt
Standard SBC

Iron Eagle
Cast Iron
9.025" 9.325"
4.00" 4.125"
350, 400
Raised 0.391" Std SBC or BBC Bore
Steel 4 - Bolt
Spread Rails

Race Series
355 - T6 Aluminum
9.025", 9.325" 9.500"
4.00" 4.125"
350, 400
Raised 0.391" BBC Bore
Steel 4 - Bolt
Spread Rails

firestone

However big you can make a small block, you can always make a big block way bigger using similar after market blocks. Plus, the big problem is not simply the size with the small block, it is more the fact that big block heads flow so much more air. I think the highest flowing small block heads are the Dart little Chief heads or SB 2.2 at around 450cfm (or around 330 cfm for a SBC conventional head and a stock oval port BBC head flows that with a little porting and big valves). A conventional after market ported big block head is capable of flowing almost that. If you get into exotic BBC heads, you are looking at ~600 cfm. For what it would cost to build a little chief headed 550cid motor, you could probably build a 600+ cid big block with big chief heads and probably make another 100-200 hp. Along with being more powerful the big block would most likely also be stronger due to the shear size difference of the parts.

Here is what you can expect between with a conventional Headed big block and a conventional small block in a racing application:

Big block:
http://www.shafiroff.com/sportsman/582_965.asp

Small block:
http://www.shafiroff.com/sportsman/434_685.asp


Here is a big chief combo:
http://www.eatonenterprises.com/632b...inepackage.htm


Here is what is capable with a big block and a dart big M block and pro stock heads.
http://www.sonnysracingengines.com/p...632-1320hp.htm

Or if you want to really go all out, this
http://www.sonnysracingengines.com/p...es/811hemi.htm

Sure, you are talking $75,000 but you simply cannot make this power with an N/A small block regardless of the money.

The most I have heard out of an N/A small block in any configuration is ~1100 hp

Here is a good comparison between the best of both that the small block and big block worlds have to offer as far as heads go.

Little chief heads
http://www.mbellc.com/files/Flow%20%20Lit%20Chief.pdf

Pro stock heads
http://www.sonnysracingengines.com/p...al5inDrag.html


Adam

woodsman

Man I just found my glasses and it looks just as good with or without them. Good going BIG BLOCKS.