400 builds-anybody?? NON STROKER!

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I haven't, but I think it would be easy to make a strong engine from one. I believe due to the short stroke, it would have to be treated more like a small block, (more rpms), but with the big bore should make some good numbers. Upping the pathetic stock compression ratio would be high on my list.
 
400's run real good. get the compression up a little, maybe a steel crank out of a 383 and some decent heads. like stated above, they like to rev so a deep pan and a good oil system is a must if your really gonna let it run!
 
im going to be sticking one in my duster real soon. i have to set up the whole car so for now i did a hone, new rings, 383 steel crank polished and balanced windage tray, and i baffled the pan, summit cam and timing chain. rebuilt 906 heads from another project. might do a street port job. adjustable iron rockers and a performer intake with a TQ. the idea was to just use it while i se tthe car up. maybe ill like it, maybe ill want more. its just a cruiser. if i build it, the plan is the steel crank, a set of 440 rods H beam or LY, with a custom light weight forged piston.
 
I am thinking about a build with closed chamber heads ('65 -383 heads w/larger valves) and a .030 overbore with a healthy cam. The 8.2 compression has gotta go!
 
You can get slugs for a 400 with 440 rods?
 
Piston selection (or lack thereof) has been the problem with the 400. I have no idea what the price on custom pistons would be.
 
I enquired to several piston makers. They make anytihng you want for about a $1,000.
 
The IC825 from Keith Black will make it happen. It will be .045" in the hole at TDC with the 440 rod and 3.380 400 stroke and is made for the 4.342" bore. That is a off the shelf piston for a 468 cube motor based off the 400. They are a forged piston. Summit has um for 471 bucks.

http://www.summitracing.com/parts/UEM-IC825-040/
 
rumblefish360 said:
I enquired to several piston makers. They make anytihng you want for about a $1,000.
Click to expand...

ouch

StrokerScamp said:
The IC825 from Keith Black will make it happen. It will be .045" in the hole at TDC with the 440 rod and 3.380 400 stroke and is made for the 4.342" bore. That is a off the shelf piston for a 468 cube motor based off the 400. They are a forged piston. Summit has um for 471 bucks.

http://www.summitracing.com/parts/UEM-IC825-040/
Click to expand...

No zero deck quench then but the price is right.
 
StrokerScamp said:
The IC825 from Keith Black will make it happen. It will be .045" in the hole at TDC with the 440 rod and 3.380 400 stroke and is made for the 4.342" bore. That is a off the shelf piston for a 468 cube motor based off the 400. They are a forged piston. Summit has um for 471 bucks.

http://www.summitracing.com/parts/UEM-IC825-040/
Click to expand...

I'm gonna take a stab and say that'll give ya a 9.0-1 with 84 cc heads?
 
Got any shots of them?
Description? Flat top/domed?
 
yeah you can get pistons made for pretty much anything that has a crank, rod and piston. i think i paid about 800 for my venolia pistons for my 431. i think ther eare off the shelf pistons available now, not when i built it. they are half the weight of a cast 440 piston, which should really make the rods and bearings happy.
 
1MeanA said:
ouch



No zero deck quench then but the price is right.
Click to expand...

.045" is small enough to acheive zero deck, but I imagine just blueprinting the deck height would get it blindingly close. I wouldn't worry too much about fancy quench stuff. Motors have run just fine without all that hoorah for years. It will haul ***.
 
rumblefish360 said:
Got any shots of them?
Description? Flat top/domed?
Click to expand...

Bore: 4.28"
Stroke: 3.38"
Rod length: 6.765"

Dome: 12.5cc
Compression height: 1.493"

With 440 length H-beam rods, I reduced the rotating assembly by over 1 pound, compared to the stock pistons and rods. Probably would of saved a little more if I used I-beam rods.

Also went with the 1/16", 1/16", 3/16" rings.
The pistons are coated with a dry film lubricant on skirts and a ceramic coating on the piston top.

1968Barracudaproject023.jpg
 
Holy domeasses Batman! No way that'll run on pump gas. lol
 
I know this is an old post, but very interesting to me. I’d like to try a 400 with a long rod. What’s the big advantages to this besides fitment and maybe lower and mid rpm response? Always a student...
 
cuda620 said:
I know this is an old post, but very interesting to me. I’d like to try a 400 with a long rod. What’s the big advantages to this besides fitment and maybe lower and mid rpm response? Always a student...
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400 already has a great rod ratio, I don’t see an advantage myself.

They run real good when you put a 4.250 crank in one with some chevy rods and a 1.53 r/r. Doesn’t look good on paper but it works. I have a pump gas 400/511 that runs 10.90’s in street trim & 4000# in a b body.
 
Nice, but not interested in a stroker. I’d just do a 451 if so. 2800 lb A body... Thanks.
 
cuda620 said:
Nice, but not interested in a stroker. I’d just do a 451 if so. 2800 lb A body... Thanks.
Click to expand...

Guess my point is rod ratios are somewhat over rated. Longer rods in a 400 is a pointless expedition unless your trying to turn some unreal rpm’s. It already has a 1.88 out of the box. What are you going to gain. Maybe a little more piston dwell at TDC, smaller piston, not worth the effort.
 
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Stock stroke 400, Trick fow 270's, fat solid roller, tunnel ram, and a 4 speed. F $!#@k, yeah!
 
That’s why I’m askin. Not interested in a 500 to 800 dollar forged stroker Chinese crank.
 
Wow! Talk about digging up an old thread! Holy grace robber Batman!
2010!

But I like it!!!!

I grabbed a 400 to build later. Stock stroke will be used. M1 single with a race TQ.
 
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