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is a 6l crank and ls1 crank the same? spacer?

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Old 09-01-2011, 07:11 AM
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Default is a 6l crank and ls1 crank the same? spacer?

hey guys i know the stroke is the same between 6l and a ls1. but is the spacer able to be removed off the truck crank and used in a truck block for a car. i know there are hundreds of 6ls in cars but do u have to keep the cars crank or can i use the trucks crank and just use a car rear cover and truck crank minus spacer?

oh and on another question can i push the crank to 700 or 750 whp with boost? is that pushing its limits in your opinion. its my daily driver the plan is to get a forged crank but i already have the stock 6l truck crank sitting and rods and pistons sounds better. was giong with a 370 and a bb 76mm
Old 09-05-2011, 05:20 AM
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anybody know this. i know there are a bunch of 6l swaps did you just take the spacer off? or did you have to use your ls1 crank.
Old 09-12-2011, 01:40 AM
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If it looks removable then thats the one you want..no seam then it wont work.
Old 09-12-2011, 07:03 AM
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yes it looks removable. so i got the right one for the m6 370 build u think i can make 700 whp on this stock crank and drive it every day spring summer fall. 76mm bb turbo and arround 12psi id imagine.
Old 09-12-2011, 11:36 AM
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IDK about that part..I'm still playin small scale..lol
Old 09-12-2011, 11:54 AM
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There are several people on here that have used the stock crank to over 1000rwhp with no issues. Stock cranks are very good quality. Just make sure you get a good set of pistons, rods & bearings.
Old 09-12-2011, 03:48 PM
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I was gona go with a callies h beam proably coated diamond pistons and coated bearings and good rings. Still figuring out ring gap but gathering parts.
Old 09-13-2011, 08:31 AM
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ok got the spacer off the crank. and its the same as the spacer jegs sells for the adaptor for ls1s to manual trans.
http://www.jegs.com/p/GM-Performance...35483/10002/-1
this is the desc of the spacer on jegs site. its just the stock 6l spacer but if somone needs one then id sell this since its gona sit. the gm one is 42 bucks id take 22 shipped.
Old 09-13-2011, 11:28 AM
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Originally Posted by Mattsv8
ok got the spacer off the crank. and its the same as the spacer jegs sells for the adaptor for ls1s to manual trans.
http://www.jegs.com/p/GM-Performance...35483/10002/-1
this is the desc of the spacer on jegs site. its just the stock 6l spacer but if somone needs one then id sell this since its gona sit. the gm one is 42 bucks id take 22 shipped.
That's for a Auto Trans..
Old 09-13-2011, 06:22 PM
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yep wich is why i wont be needing it cause im a m6 car. im shure someone will though seems to be a lot of auto swaps.



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