Big Block 400 stroker .060 what CID ???

-
I don't know what else to say. You've been given two correct formulas. The .785 in the formula I posted is simply a "given" in a mathematical equation. I spelled it out through step by step math. If you cannot understand it, I'm sorry, but it is correct.
 
Thanks all u people for this discussion : P I pulled ur chains long enough .

Just remember this on a 440 the over bore is always minus - 20 so .060 on a 400 would be .040 on a 440 ..
 
Actually, the difference between the bore sizes is .022, not .020. But I don't understand the point you're trying to make. That still hasn't a thing to do with figuring displacement. You have two good formulas in this thread for that.
 
SGBARRACUDA said:
Do you trust Ross Pistons? Check out this link.

http://www.rosspistons.com/products/formulas.php
Click to expand...

With there formula SG what size do u get ?

1bore is 4.402
2stroke 3.75
3rods 6.768
4head gasket .040
CONVERSIONS:
1 Cubic Inch = 16.38 CCs
Cubic Inches to CCs = Cubic Inches X 16.38
Cubic Inches to Liters = Cubic Inches X .01638
CCs to Cubic Inches = CCs divided by 16.38
Liters to Cubic Inches = Liters divided by .01638
 
Mudd340 said:
With there formula SG what size do u get ?

1bore is 4.402
2stroke 3.75
3rods 6.768
4head gasket .040
CONVERSIONS:
1 Cubic Inch = 16.38 CCs
Cubic Inches to CCs = Cubic Inches X 16.38
Cubic Inches to Liters = Cubic Inches X .01638
CCs to Cubic Inches = CCs divided by 16.38
Liters to Cubic Inches = Liters divided by .01638
Click to expand...

We've already told you ten times what we come up with using their formula.
 
StrokerScamp said:
More specifically, it would be a 451.79261. Or 452 rounded off, as was said earlier.
Click to expand...

StrokerScamp said:
You haven't pulled anybody's chain. We're right you're wrong. Pretty simple really.
Click to expand...

StrokerScamp said:
Actually, the difference between the bore sizes is .022, not .020. But I don't understand the point you're trying to make. That still hasn't a thing to do with figuring displacement. You have two good formulas in this thread for that.
Click to expand...

StrokerScamp said:
I don't know what else to say. You've been given two correct formulas. The .785 in the formula I posted is simply a "given" in a mathematical equation. I spelled it out through step by step math. If you cannot understand it, I'm sorry, but it is correct.
Click to expand...

http://victorylibrary.com/mopar/rb-bs.htm the "chart "
"first rule of war is to confuse the enemy" .. Churchhill
 
Mudd340 said:
If u hot heads would click the link u would no that already have the information but instead u like to run into a mind field blow off ur tops !:happy2:
Click to expand...

I did click it. It means nothing for this discussion. You still are arguing incorrectly about the cubic inch formula. The formulas you've been provided with here are correct. I don't understand why you're being so argumentative. You're the one in the mine field bud. Believe me. lol
 
I will try to explain it once more and then that is it for me. Let's use a 340 as an example, ok? The 340 has a bore of 4.040 and a stroke of 3.31. That's all we need to determine cubic inch displacement. Here goes.

The formula is bore x bore x stroke x .785 x 8 (# of cylinders)

So,

4.040 x 4.040= 16.3216

16.3216 x 3.31 (stroke)= 54024496

54024496 x .785= 42.40922936

42.40922936 x 8= 339.27383488 cubic inches. Do you understand now? If not, I cannot help you.
 
moper said:
So it's not a 340 then, right? ;)
Click to expand...

Yeah. It doesn't even round up, does it?? LOL Sorta like the 302 phord. They don't round up either. They are a 301 and a 4.9 liter. LOL
 
339 just doesn't sound right.

Stick with the bigger is better philosophy!
 
StrokerScamp said:
Yeah. It doesn't even round up, does it?? LOL Sorta like the 302 phord. They don't round up either. They are a 301 and a 4.9 liter. LOL
Click to expand...

Same story for the chevy 302. The only folks who actually called a 4x3 V8 by it's displacement was Pontiac. Then you have the Ford 351s...they're actually 352 cubes, but the only one that was actually called a 352 was the old FE engine.

...and don't even get me started on the naming of firearm cartridge calibers.
 
Come on guys you know you're all wrong:happy1:
 
Mudd340 said:
My 470"
400 block/4.375" bore
Eagle crank 3.900
Manley 6.760 rods
Diamond pistons 10.2:1
Edelbrock 84cc heads
Comp street solid roller 242/[email protected] .570/.576
Comp pro mag rockers
Smith Bros. pushrods
Edelbrock Performer RPM
Holley 800 DP
Idles at 800 rpm w/13" vac. Chassis dyno showed 415 rwhp at 5500 and over 500 ft lbs from 3000 up.
Click to expand...

That's my build....must have copied/pasted from another thread. Not sure why you posted it here...but it was calculated using the formulas in this post...actually it calculates to 469" I believe. It would calculate that way no matter what rod length you use. I just chose the RB length rod.
 
You must log in or register to reply here.
-

Back
Top