what size bore equals 427
03-12-2006, 06:58 PM
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what size bore equals 427 what are the measurements for an aluminm ls1 block to get a 427, im told that iron and aluminum are difernt measuremens, what size rods and bore make a 427 all measurements would me helpful im curious thnx
03-12-2006, 07:09 PM
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Originally Posted by themack56
what are the measurements for an aluminm ls1 block to get a 427, im told that iron and aluminum are difernt measuremens, what size rods and bore make a 427 all measurements would me helpful im curious thnx
6.125" Rods
03-12-2006, 07:17 PM
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thats all that there is to it? oh and what accesories can you reuse from your current ls1 after the rebuild to a 427 and what do you have to get new?
03-12-2006, 10:43 PM
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You can go about it more than one way. The normal for the LS-1 block is the 4.125" bore and a 4" stroke, or you can do a 4.060" bore and a 4.125 stroke in a iron block. The aluminum block will have to be re-sleeved. which is expensive, and the iron block will have to be sonic tested if you go 4.060". The block itself is no diffrent on the outside, so all current accessories will work back. As far as internal parts, you'll want to upgrade to ported heads, cam, lifters, headers, etc.......
03-13-2006, 05:23 PM
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Originally Posted by Beast96Z
You can go about it more than one way. The normal for the LS-1 block is the 4.125" bore and a 4" stroke, or you can do a 4.060" bore and a 4.125 stroke in a iron block. The aluminum block will have to be re-sleeved. which is expensive, and the iron block will have to be sonic tested if you go 4.060". The block itself is no diffrent on the outside, so all current accessories will work back. As far as internal parts, you'll want to upgrade to ported heads, cam, lifters, headers, etc.......
I'd take some of the extra money to convert to a 427 and spend it on a FAST 90/90 combo, 12-bolt rear, and True Duals 