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Generation III Internal Engine 1997-2006 LS1 | LS6
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Which pushrods to use for LS6 cam swap?

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Old May 18, 2008 | 10:26 AM
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Default Which pushrods to use for LS6 cam swap?
Im putting a 02+ LS6 cam and valve springs in my 5.3. I know the LS6 cam has a smaller base circle, but I don't know which length pushrods i need to make up the difference. I am using stock rockers.

thanks
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Old May 18, 2008 | 11:39 AM
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Pushrod length checker would be my advice, cheap and eliminates the guesswork. Several of the sponsors on here sell them.

Paul
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Old May 19, 2008 | 11:04 PM
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Where would I get one of these? How much do they usually go for?
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Old May 20, 2008 | 12:04 AM
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I know that Comp makes two for the Gen III engines. IIRC they have a cheap one and a nice one. I think the nice one is like $20-$25...not bad at all.

I have heard of people running the 5308 cam with their stock (or stock length) pushrods with no problems.
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Old May 20, 2008 | 07:34 AM
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Originally Posted by 5.3-on-steroids
Where would I get one of these? How much do they usually go for?

Got mine from Speedinc for 20 bucks.

R/

Frat
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Old May 20, 2008 | 11:54 AM
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the base is smaller but not enough to matter im pretty sure they use a 7.4
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Old May 20, 2008 | 11:56 AM
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Originally Posted by NastySSoo
Pushrod length checker would be my advice, cheap and eliminates the guesswork. Several of the sponsors on here sell them.

Paul
^+1. Always good to know for sure.
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Old Jul 9, 2008 | 03:31 PM
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Default help with my 5.3l ls6 cam swap
im having trouble i put a ls6 cam in my 5.3l and im having trouble it idles fine but it feels like its lacking power and when i rev it or accelerate it bogs down when i let off and some times dies. i turned the o2 sensors off to correct the random multiple misfire code and i changed the downstream o2 sensors and still no luck im at my wits end please help!
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Old Jul 9, 2008 | 03:56 PM
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Sounds like you might need a tune. I didn't know o2's could cause a P0300. Something seems off.
Last edited by ss.slp.ls1; Jul 9, 2008 at 04:27 PM.
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Old Jul 9, 2008 | 04:26 PM
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id be willing to bet a 7.4 pushrod will work fine...
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Old Jul 9, 2008 | 06:42 PM
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7.425 if you don't use LS6 heads with the longer valves, but I have heard the 7.4's will work, but you won't get the full lift of the cam, although we are only talking about .025" here plus the flex of hyraulic lifters.
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can anyone suggest the right heads??




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