408 vs. 422
Staging Lane
Joined: Nov 2001
Posts: 76
Likes: 0
From: Houston
Re: 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
TECH Apprentice
Joined: Dec 2001
Posts: 340
Likes: 0
From: Fort Worth TX
Re: 408 vs. 422 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" />
Staging Lane
Joined: Sep 2002
Posts: 52
Likes: 0
From: Leonardtown, MD
Re: 408 vs. 422 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.
Re: 408 vs. 422 </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......
