408 vs. 422
There was a really good thread recently about "stroker guys ,if you had it to do over again..." something like that. I chose an iron 408 solid roller. I want the option of putting a big shot of gas on the car and feel much more confident in the iron vs aluminum block. Good Luck
Well, you can still go 422 with iron and shoot nitrous, 4.125/4.030. From what I understand the 408's 1/8" shorter stroke allows for a higher rev. Could some one chime in and let us know how many less rpm the longer stroke can handle. It just seems like such a small difference. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
I'm going with the 422 Iron and ATI Procharger (D1SC) More stroke usually means more torque, but not as high of a reving machine. I don't care though seeing as this car will be 99% on the street. It's not a full out race effort.
BTW a 427 would be awesome to but a .060 bore scares me a bit since I'm running a power adder.
BTW a 427 would be awesome to but a .060 bore scares me a bit since I'm running a power adder.
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS171Malibu:
<strong>From what I understand the 408's 1/8" shorter stroke allows for a higher rev.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The classic 422 LS1 is a 4.10" bore with a 4.00" stroke and the 408 is a 4.03" bore with a 4.00" stroke. Both can be reved to the same limit. A 422 can be made with a 4.035" bore and 4.125" stroke and it will have a slightly lower rev limit than a 4.00" stroke.
The guy with the ARE 436 with the 4.125" stroke crank had a dyno graph that pulled all the way to 6500 without power loss. Maybe the 4.125" could be reved higher......
<strong>From what I understand the 408's 1/8" shorter stroke allows for a higher rev.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The classic 422 LS1 is a 4.10" bore with a 4.00" stroke and the 408 is a 4.03" bore with a 4.00" stroke. Both can be reved to the same limit. A 422 can be made with a 4.035" bore and 4.125" stroke and it will have a slightly lower rev limit than a 4.00" stroke.
The guy with the ARE 436 with the 4.125" stroke crank had a dyno graph that pulled all the way to 6500 without power loss. Maybe the 4.125" could be reved higher......

