Generation III Internal Engine 1997-2006 LS1 | LS6
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408 guys, need some input

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Old Jun 14, 2004 | 01:19 PM
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chrdij's Avatar
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Default 408 guys, need some input

Well my engine threw a rod bolt and messed the bottom end way beyond repair last week. I decided to go with the 408 iron block, to save $$ and not have to worry about sleeve issues. My question to you: Will my ls1 heads fit right onto the block with the ls6 intake? And what about the oil pump, ported ls1, ls6 do the trick? Would the stock ls1 oil pan be ok, or need to go larger?
Any tips would be great, as I am placing the order here next week

Thanx for all your help,
Chris
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Old Jun 14, 2004 | 02:06 PM
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stock oil pan is ok, can use ported or stock pump, you will want to rework your heads for the bigger bore and dont forget your cr will also go up due to the extra area in each cylinder so you have to account for that too.
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Old Jun 14, 2004 | 02:24 PM
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Originally Posted by Mike K.
stock oil pan is ok, can use ported or stock pump, you will want to rework your heads for the bigger bore and dont forget your cr will also go up due to the extra area in each cylinder so you have to account for that too.
How do you rework the heads to fit the bore? Do u mean bigger valve size,and or inlarging the cc size? How much am I looking at in price for the heads to fit the bore? Thanks for all your input!
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Old Jun 14, 2004 | 02:53 PM
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bigger valves and cc's,
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