Generation IV Internal Engine - 427 build - 6.0L block?
01-22-2009, 03:16 PM
I'm beating around the idea of starting a 427 build for my 01 SS. I've got 91,000 miles on the factory motor, still runs better than new but I figured start now and by the time the stock motor goes I'd have a bad ass engine ready to replace it. Now, can I use an Iron LQ4 6.0L block to get 427 cubic inches? This will take an overbore and stroker crank correct? I've read quite a few posts and haven't seen anything on the truck blocks. This is for a budget build is the reason I'm considering this. Thanks
01-22-2009, 05:56 PM
if you use a 4.125 stroke, and if you have to bore it (if it doesnt need it dont) a 4.030 bore will give you a 421.
01-23-2009, 02:47 PM
You can get to 427" with a 6.0 truck block, but you ought to be asking yourself, SHOULD you:confused: With that much stroke, the piston is gonna be SHORT, and you are gonna (more than likely) have oil consumption problems rahter quickly. If this is a DD, then I vote no. Race car or just occasional street, it can be done. The max overbore on a 6.0 truck block is .060, so you are gonna have to get your cubes from teh crank, and again, it is gonna leave you with a short piston.
01-23-2009, 02:55 PM
You could do one of our 440's which use the LS7 block.
You could stick with a 415 to make it less expensive. Give either myself or Tim a call if you want to talk more.
01-27-2009, 12:31 AM
4.060 bore and 4.125 stroke give you 427. Don't run too much comp. you may run into heating issues.
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