408 Rotating Assy
06-10-2008, 04:50 AM
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408 Rotating Assy Hey whats going on guys I have a 6.0 iron block that I just picked up from a buddy, I am having it bored out to a 408 because from what I have been reading 408CI is the ideal bore size for a turbo application 6.0 block.
Right now I am trying to piece together a rotating assembly because I do not want to go the stroker route because I am looking to build a strong motor that will last me a while.
I was just curious what Cranks people are running, I was thinking of maybe using the OEM LS2 crank and have the have the counter weights knife edged. what do you guys think would be best?
And reading the piston thread you guys will be happy to know that I am going to run Wiseco 2618 8/-15/20cc at 9.1CR b
Right now I am trying to piece together a rotating assembly because I do not want to go the stroker route because I am looking to build a strong motor that will last me a while.
I was just curious what Cranks people are running, I was thinking of maybe using the OEM LS2 crank and have the have the counter weights knife edged. what do you guys think would be best?
And reading the piston thread you guys will be happy to know that I am going to run Wiseco 2618 8/-15/20cc at 9.1CR b
Last edited by X-MAN510; 06-10-2008 at 08:30 PM.
06-10-2008, 04:56 AM
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Hey whats going on guys I have a 6.0 iron block that I just picked up from a buddy, I had it bored out to a 408 because from what I have been reading 408CI is the ideal bore size for a turbo application 6.0 block.
Right now I am trying to piece together a rotating assembly because I do not want to go the stroker route because I am looking to build a strong motor that will last me a while.
I was just curious what Cranks people are running, I was thinking of maybe using the OEM LS2 crank and have the have the counter weights knife edged. what do you guys think would be best?
And reading the piston thread you guys will be happy to know that I am going to run Wiseco 2618 8/-15/20cc at 9.1CR b
Right now I am trying to piece together a rotating assembly because I do not want to go the stroker route because I am looking to build a strong motor that will last me a while.
I was just curious what Cranks people are running, I was thinking of maybe using the OEM LS2 crank and have the have the counter weights knife edged. what do you guys think would be best?
And reading the piston thread you guys will be happy to know that I am going to run Wiseco 2618 8/-15/20cc at 9.1CR b
06-10-2008, 06:34 AM
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Use a stock crank and 6.125 rods
If the block was bored for a 408 it is .030 over
with a stock crank and .030 over pistons you will be at 370ci
we have several members here with HIGH HP 370's, some over 1k RWHP.
Derek
If the block was bored for a 408 it is .030 over
with a stock crank and .030 over pistons you will be at 370ci
we have several members here with HIGH HP 370's, some over 1k RWHP.
Derek
06-10-2008, 07:46 AM
#5
I kept my 6.0L iron block as the stock bore and just did a line hone, debur, and blueprinting. I figured the difference between a 402 and 408 is not much since I will be running the F1-R. Plus the extra wall thickness gives me a little piece of mind.
Keith
Keith
06-10-2008, 01:42 PM
#7
Honestly after looking at the price of a used crank plus machining, the extra 38 cubes going to a 403 was a no brainer. And you really should have waited to machine the block until you have your pistons, as you need to machine to the piston and not the other way around.
Best bet would be to contact somebody local to you and have them build it with their parts as they'll probably get a better deal on parts. Where are you located?
Best bet would be to contact somebody local to you and have them build it with their parts as they'll probably get a better deal on parts. Where are you located?
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06-10-2008, 07:05 PM
#8
Honestly after looking at the price of a used crank plus machining, the extra 38 cubes going to a 403 was a no brainer. And you really should have waited to machine the block until you have your pistons, as you need to machine to the piston and not the other way around.
Best bet would be to contact somebody local to you and have them build it with their parts as they'll probably get a better deal on parts. Where are you located?
Best bet would be to contact somebody local to you and have them build it with their parts as they'll probably get a better deal on parts. Where are you located?
06-10-2008, 08:02 PM
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I'm not really too sure of the year but I picked it up for 300 bucks... And thanks I am going to need all the luck I can get... But so far I've been pretty lucky.
06-10-2008, 08:22 PM
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I got the Idea of using a smaller crank from Ferrari... All there cranks are surprisingly small and they rev up like no other and make great power...
So what is a good 408 rotating assy that isn't a stroker? I've heard a lot about callies but they don't explain much on there page.
06-10-2008, 08:36 PM
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Honestly after looking at the price of a used crank plus machining, the extra 38 cubes going to a 403 was a no brainer. And you really should have waited to machine the block until you have your pistons, as you need to machine to the piston and not the other way around.
Best bet would be to contact somebody local to you and have them build it with their parts as they'll probably get a better deal on parts. Where are you located?
Best bet would be to contact somebody local to you and have them build it with their parts as they'll probably get a better deal on parts. Where are you located?
06-10-2008, 08:38 PM
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hmm... really? Excuse me I am a Nissan guy this would be my first time building a V8 and this is all sort of new to me and I have always been a fan of LS series motors so when I stumbled upon this block I had to get it. Is the reason it is a 370CI because of the fact that the crank has a shorter stroke?
I got the Idea of using a smaller crank from Ferrari... All there cranks are surprisingly small and they rev up like no other and make great power...
So what is a good 408 rotating assy that isn't a stroker? I've heard a lot about callies but they don't explain much on there page.
I got the Idea of using a smaller crank from Ferrari... All there cranks are surprisingly small and they rev up like no other and make great power...
So what is a good 408 rotating assy that isn't a stroker? I've heard a lot about callies but they don't explain much on there page.
Derek
06-10-2008, 11:12 PM
#13
Most will tell you that for a turbo application, you don't need the added torque from a stroker.. and often will list reason why not to stroke a turbo motor. Of course, me being me, have a bored .065 over 4" stroke 415 ci with twins. If I were to do it again, I'd go against the grain again... but to put into persepctive, my friend destroked his and runs big twins and pulls 7.70,s Im prob a few seconds slower.. lol
06-10-2008, 11:56 PM
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Most will tell you that for a turbo application, you don't need the added torque from a stroker.. and often will list reason why not to stroke a turbo motor. Of course, me being me, have a bored .065 over 4" stroke 415 ci with twins. If I were to do it again, I'd go against the grain again... but to put into persepctive, my friend destroked his and runs big twins and pulls 7.70,s Im prob a few seconds slower.. lol
06-11-2008, 03:35 AM
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And I just want to say thanks a lot guys your help is greatly appreciated.
06-11-2008, 02:37 PM
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Ok now thats a stroker crank right because according to POZESD99's sig he also has a 4" stroke crank but he is a baller and has a Lunati crank and refers to it as a stroker crank. but if I use 6.125 rods that would put me right where I want to be right, a 408 non stroker?
Sorry if I am sounding repetitive but I just want to make sure I'm on the same page?
Sorry if I am sounding repetitive but I just want to make sure I'm on the same page?
06-11-2008, 06:22 PM
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A 4" crank will net you 408ci. A stock crank will net you 370ci. I think you are wanting to go 408ci all bore and that is not attainable with a 6.0 iron block.