Generation III Internal Engine 1997-2006 LS1 | LS6
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Old Nov 14, 2011 | 07:04 AM
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lemkerailroad's Avatar
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Default cylinder head moding

I am building a 383 out of my 2001 LM7 ENGINE and I am looking for advice on how much flow I can get from a set of stock head that are ported and polished

Any help would be great

Anyone have any numbers from a set that's been done
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Old Nov 14, 2011 | 07:38 AM
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1 million cfm

best heads ever
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Old Nov 14, 2011 | 01:52 PM
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i am looking for help here as i dont know if i can get enough money together to get a set of AFR heads but if i can come close on these stock heads and if i can change out valves and seats then i may be in business

what is a good set / size valve and seats to use

sorry im old school and am learning on the GEN III LM7 the new ways to hot rod with FI
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Old Nov 14, 2011 | 01:56 PM
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A good start would be to actually tell us what heads you talking about?
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Old Nov 14, 2011 | 02:26 PM
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stock aluminum, cathedral haeds that came with the 2001 5.3 ltr LM7 truck engine

have to forgive me but i dont have the casting # with me at the moment
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Old Nov 14, 2011 | 03:08 PM
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We got mid 280s out of our CNC'd/LS1 Valve 862 castings.

http://sdparts.com/details/scoggin-d...center/sd8926c
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Old Nov 14, 2011 | 03:16 PM
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A little more information on what you want out of this combo would be helpful. Is it being built for a tractor pull, drag race , autocross car, boat, etc application? Also any information about the short-block (piston volume and the like) would be helpful!

We've got quite a few ported GM casting heads to choose from 5.3L's, LS6's, 6.0L's, and more!
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