biggest cubic inch small block

[oldred95]

I know eagle and maybe others make make 396 stroker kits for SBC's but is there any other kit or any way to get more cubic inches out of a small block? A few years ago HPTV build a 472 small block but the deck heighth and everything was changed to allow for such a big displacement. The eagle 396 stroker kit with .060 over pistons would make a 401 but boring that much isn't the best choice to make. Just curious.

[Blaze5509]

There is a 400 small block

[oldred95]

There is a 400 small block

I mean taking a stock 87-95 TBI block and getting as many cubes out of it as possible.

[02Z]

You can build a 434 inch SBC without any problems...Hardcore (Bill Mitchell) builds a 454 SBC...I can't remember if the deck height is different than a stock 400 or not.

[02Z]

I mean taking a stock 87-95 TBI block and getting as many cubes out of it as possible.

O well if you are using a 350 block then a 396 is probably about as far as you can go. I would just got tried and true with the 383. You better find something better to feed it than the stock TBI though.
Might want to check out how strong those blocks are...I know they are 2-bolt blocks...2-bolt blocks can be good and bad...talk to a reputable machine shop and they should be able to tell you.

[oldred95]

O well if you are using a 350 block then a 396 is probably about as far as you can go. I would just got tried and true with the 383. You better find something better to feed it than the stock TBI though.
Might want to check out how strong those blocks are...I know they are 2-bolt blocks...2-bolt blocks can be good and bad...talk to a reputable machine shop and they should be able to tell you.

An 850 cfm 2 barrel TBI and T4 garrett turbo are going to be feeding it. I plan to use either a 2 bolt main with splayed 4 bolt main conversion caps or a stock 4 bolt block.

[tee-boy]

O well if you are using a 350 block then a 396 is probably about as far as you can go. I would just got tried and true with the 383. You better find something better to feed it than the stock TBI though.
Might want to check out how strong those blocks are...I know they are 2-bolt blocks...2-bolt blocks can be good and bad...talk to a reputable machine shop and they should be able to tell you.

I'm told that the 2 bolt blocks will support up to 400 hp. I'm guessing that was for a strip application.

[tee-boy]

O well if you are using a 350 block then a 396 is probably about as far as you can go. I would just got tried and true with the 383. You better find something better to feed it than the stock TBI though.
Might want to check out how strong those blocks are...I know they are 2-bolt blocks...2-bolt blocks can be good and bad...talk to a reputable machine shop and they should be able to tell you.

Why do you say go w/ the 383 when you can stroke it to 396?

[tee-boy]

Why do you say go w/ the 383 when you can stroke it to 396?

I think the general rule is as you increase cu in via a longer crank you tend to give up redline and gain in lower end torque.

[piper.gras]

Yes, this is true. Stroking an engine increases the mass of the rotating assembly, which causes a drop in the RPM limit of the motor. In a truck application you don't necessarily want/need high RPMs, so 396 should be ok.

(If I remember correctly, a small block can be built up to 502 ci, but that's really stretching it pretty far.)

[CKTA]

You can now make LS1's over 500 ci.

[TITANIUM]

I think the general rule is as you increase cu in via a longer crank you tend to give up redline and gain in lower end torque.

That is one of the reasons I don't like stroked engines.


I would just keep a eye out on a Big Block and build it up.

[02Z]

Why do you say go w/ the 383 when you can stroke it to 396?

The more you stroke it the more you'll spend in clearancing the block...and the more the parts are going to cost. If he sticks with a standard 3.75 stroke then the parts will only be 1/2 as much and it'll still make basically the same power. He may give up 15 hp, but that 15 hp is going to cost an arm and a leg.

Of course if he's going to have a T-4 on it then it's going to need the best of the best. That motor will make 700+ hp, easily. He's talking about a $10K motor, a $3K tranny, and a $2K rear to hold it together. Then he's on to suspension parts, etc. This is absolutely crazy and will cost $20K to keep it together and put the power to the ground...just build a stout N/A motor and be done with it. You can make a 9.5:1 383 make 500 hp easy...that's enough to put that truck deep into the 13's or maybe bumping into the 12's, depending on the setup.

[AyerForce]

You can now make LS1's over 500 ci.

Thats unreal, how much over 500 can you get? Is that out of a stock block?

[mds2004]

You can now make LS1's over 500 ci.

Yup, I just read the thread and .pdf on it the other day on one of these forums. That thing looks insane.

[mds2004]

Thats unreal, how much over 500 can you get? Is that out of a stock block?

I found the link. Check out this pdf:
http://www.erlperformance.com/techbr...eve_Design.pdf

[todd1969]

oldred95:

If you get some great heads and have them tricked out, you can have all the horsepower potential you can imagine. Look at Cup engines...only 358 cubes, but making 850 horspower with a lot of homework done in the heads, intake and carb. Not that they are anywhere near stock, but you do not have to have 396 cubes to make 700 horsepower. www.airflowresearch.com

Look at AFR heads and control your slobbering when you see what they have! ha ha They have some choice pieces that really make power from idle to 8000-9000 rpm's if the heads are setup for that many rpms. AFR has a superb reputation and they can do virtually any machine shop work that can be dreamed up, plus send or buy a manifold from them and they'll make everything flow / work together.

You'll not go wrong with a great set of heads ever, they will not hurt the low end and will not hurt top end either.

[Nick]

You can now make LS1's over 500 ci.

Yeah, but how's he gonna adapt his TBI to it? :LOL: :LOL:

[oldred95]

Yeah, but how's he gonna adapt his TBI to it? :LOL: :LOL:

Hot glue and lots of duct tape should do it


The reason for the 396 is simple. The 383 is tried and true and its a good platform don't get me wrong but if a 396 kit is out there why not go with it. Believe it or not the fully forged 396 stroker kit is cheaper then the fully forged 383 stroker kit. See for yourself.


383:
http://store.summitracing.com/partde...5&autoview=sku

396:
http://store.summitracing.com/partde...5&autoview=sku

[1989K1500]

Thats unreal, how much over 500 can you get? Is that out of a stock block?

Yea, but with deck plates and the cylinders sleeved.

I saw the article on it last month I think it was, in Car Craft.