4.00" and 4.125" Crankshafts, when do you use which?
11-17-2002, 11:57 AM
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4.00" and 4.125" Crankshafts, when do you use which? I saw there is a special on crankshafts.
Just wondering when you use a 4.00" rather than a 4.125". I saw nineball's 434CI uses a 4.00". Is one preferred over the other due to the bore / stroke ratio.
Thanks,
Bill
Just wondering when you use a 4.00" rather than a 4.125". I saw nineball's 434CI uses a 4.00". Is one preferred over the other due to the bore / stroke ratio.
Thanks,
Bill
11-17-2002, 01:34 PM
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Re: 4.00" and 4.125" Crankshafts, when do you use which? Good question!
I would like to add to it if nobody minds! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Would it be advisable to use the 4.125 crank
with a 6.0 liter block bored .30 over?
Thanks in advance,
Dave
I would like to add to it if nobody minds! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Would it be advisable to use the 4.125 crank
with a 6.0 liter block bored .30 over?
Thanks in advance,
Dave
11-17-2002, 03:09 PM
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Re: 4.00" and 4.125" Crankshafts, when do you use which? a 4.125 stroke wont fit on a 346 CI block. The 4.125 will fit on your bored 6.0 block though I believe. The difference is for the 382 stroker, the 4.00. And then for big bore engines can keep the bore and stroke ratio closer with the 4.00 stoke or just use the bigger one to gain more cubes.
11-17-2002, 03:50 PM
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Re: 4.00" and 4.125" Crankshafts, when do you use which? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by sited12:
<strong>a 4.125 stroke wont fit on a 346 CI block. The 4.125 will fit on your bored 6.0 block though I believe. The difference is for the 382 stroker, the 4.00. And then for big bore engines can keep the bore and stroke ratio closer with the 4.00 stoke or just use the bigger one to gain more cubes.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That is incorrect the 4.125 stroke will fit the alum block.
<strong>a 4.125 stroke wont fit on a 346 CI block. The 4.125 will fit on your bored 6.0 block though I believe. The difference is for the 382 stroker, the 4.00. And then for big bore engines can keep the bore and stroke ratio closer with the 4.00 stoke or just use the bigger one to gain more cubes.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That is incorrect the 4.125 stroke will fit the alum block.
11-17-2002, 05:07 PM
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Re: 4.00" and 4.125" Crankshafts, when do you use which? Man and when i asked about the 4.125 crank everyone told me it wouldnt fit. I thought there was a clearance issue with the bottom of the cyl wall.
11-17-2002, 05:18 PM
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Re: 4.00" and 4.125" Crankshafts, when do you use which? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by sited12:
<strong>Man and when i asked about the 4.125 crank everyone told me it wouldnt fit. I thought there was a clearance issue with the bottom of the cyl wall.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">There is a clearence issue but you can get it machined to fit, it wont just drop in like the 4.00 will, but it can fit with some work. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
<strong>Man and when i asked about the 4.125 crank everyone told me it wouldnt fit. I thought there was a clearance issue with the bottom of the cyl wall.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">There is a clearence issue but you can get it machined to fit, it wont just drop in like the 4.00 will, but it can fit with some work. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
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11-17-2002, 05:45 PM
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Re: 4.00" and 4.125" Crankshafts, when do you use which? Sweet looks like i am going to be using the <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" /> then. Now this just changes my whole set up.
11-17-2002, 10:54 PM
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Re: 4.00" and 4.125" Crankshafts, when do you use which? CanuckSS:
Yes not only would it be advisable but a great way to get 421 cubes and GOBS of TORQUE with the .030overbore and .4125 crank with the LQ4. As we speak, MTI is building me this exact engine but with 4.060 overbore with the above stroke for a total of 427 beautiful CUBIC INCHES! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
MTI 427 C5 Roadster <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" /> <img border="0" alt="[Corvette]" title="" src="graemlins/corvette.gif" />
Yes not only would it be advisable but a great way to get 421 cubes and GOBS of TORQUE with the .030overbore and .4125 crank with the LQ4. As we speak, MTI is building me this exact engine but with 4.060 overbore with the above stroke for a total of 427 beautiful CUBIC INCHES! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
MTI 427 C5 Roadster <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" /> <img border="0" alt="[Corvette]" title="" src="graemlins/corvette.gif" />
