Pro Stock John

iTrader: (34)

Not sure if I will use it for anything, but I picked up a 4.8 crank (3.27 stroke) with only 500 miles on it. What is a 3.900 or 3.910 bore x 3.27 stroke?

rom3

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:
<strong> Not sure if I will use it for anything, but I picked up a 4.8 crank (3.27 stroke) with only 500 miles on it. What is a 3.900 or 3.910 bore x 3.27 stroke? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I get 312.5 cubic inches. Do I win a cookie or something? <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

AP-Engineering

He's right! He wins the cookie. Let him have it. What kid of cookie is it anyway?

Pro Stock John

iTrader: (34)

One of those cookies that is half white frosting and half black frosting... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

rom3

Well, at least it's not a cookie that looks like this:

<img border="0" alt="[rainbow]" title="" src="graemlins/gr_rainbow.gif" />


<img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />

Neil 6.0

Ought to make a good boat anchor. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

99GMC Can

8000RPM 8000RPM 8000RPM 8000RPM 8000FPM 8500RPM!!!

Pro Stock John

iTrader: (34)

Right now it's a great box to put my feet on while I'm at work. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Vengeance Racing

Make a race gas motor that revs to 10,000RPM. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

DONAIMIAN

iTrader: (18)

10,000RPM would be kinda kick ***. Do it on the side as a project engine, not your main prioity, but something to do on the side when its raining outside <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

1CAMWNDR

iTrader: (21)

I also get 314.11" using a different method.
Why is it that a year or so ago when I suggested a big bore small stroke motor that equalled the stock 346" I was told it was a waste of time, and that the larger cubes would always win? Even if the short stroke long rod motor could rev to 10K.
Now there seems to be some folks interested <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> . <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />
FYI a 4.1" bore and the 3.27" crank you have is is 345.37". <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" /> And you could probably stuff a custom made 6.5" connecting rod in there. <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" />

GrannySShifting

iTrader: (10)

Why? Because someoen once said hp sells cars, torque wins races. If your gonan do an overbore, leave the stock crank in there and have a 390 somthin motor <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Would be neat, but i couldnt justify spedning all the money for a 346 and having stock parts in it.

Old SStroker

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:
<strong> Not sure if I will use it for anything, but I picked up a 4.8 crank (3.27 stroke) with only 500 miles on it. What is a 3.900 or 3.910 bore x 3.27 stroke? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Displacement = bore x bore x stroke x # of cylinders x .7854

3.91 x 3.91 x 3.27 x 8 x .7854 = 314.1

The .7854 is the little square of numbers at the top left of the keypad. Easy memory trick.

SScam68

iTrader: (20)

Not to high jack this thread but I was making a point that Supras were high way killers because

1. They make power because of boost at higher rpms
2. They can spin up to 8Krpm.

While your shifting at 6k they still have some gear left and and pull on you while your shifing (assuming both manuals)and thier still making power WAY up at the top.

If you can set this up right you could be making power above 7K rpm in N/A form and tell them your faster from a roll. This would be the look on thier faces before=> <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> after=> <img border="0" title="" alt="[Frown]" src="gr_sad.gif" /> <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

01 SS Jay

I forgot what car mag (car craft?)did this a while ago, but they were trying to make a high mpg high horsepower car, and they ended up with a 312cid engine with a blower on it. Made something like 600+hp and got 20+mpg on the interstate with a richmond m6. Im sure thats not comparing apples to apples since they were using old style SB stuff, but it was a very neat buildup.

I wonder what a short stroke, small displacement, high revving turbo motor would be like.

Reckless

iTrader: (9)

Good points for drag racing, but I'd think it would be a good combo for road racing or auto-x whrere the rpms could be kept up with a MN6 <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />