INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

limits of 5.3 internals

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Old 10-03-2007, 10:27 AM
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Default limits of 5.3 internals

I'm new to the truck thing. What are the limits of the stock internals in a 5.3? Mine is supercharged (Rotrex) not even close to pushing it right now and I'd like to know before I start pushing it.
Old 10-03-2007, 11:25 AM
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"parish8" has gone 600rwhp stock internals 5.3 for a while with the fuel to feed it, tune, and z06 cam with a lot of track passes on it. So probably around there somewhere.
Old 10-03-2007, 11:27 AM
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I'm pushing mine prety hard 566/613 on the juice.....
Old 10-03-2007, 01:07 PM
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very cool. I'm planning to push this thing to around 500ish. It's not a daily driver but will get driven quite a bit and due some short trip Camaro towing duty.
Old 10-03-2007, 04:36 PM
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we are officialy into the "countless" runs on the 5.3 turbo set up. on drag week we made 50runs in a week. 20 just on friday. we had to leave the track and go fill up the car mid day. took it bracket racing last friday and put another 10 runs on it.

i am going to have to say 600rwhp isn not living too close to the edge. at some point it would be fun to see how far it can go before failing.

Last edited by parish8; 10-03-2007 at 04:48 PM.
Old 10-03-2007, 11:39 PM
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Originally Posted by parish8
we are officialy into the "countless" runs on the 5.3 turbo set up. on drag week we made 50runs in a week. 20 just on friday. we had to leave the track and go fill up the car mid day. took it bracket racing last friday and put another 10 runs on it.

i am going to have to say 600rwhp isn not living too close to the edge. at some point it would be fun to see how far it can go before failing.
WOW!! I know a truck engine is supposed to handle some abuse, but that's insane
Old 10-04-2007, 06:24 AM
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500 is just a myth
Old 10-04-2007, 06:52 AM
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given what Jim says... I'd say in the Neighborhood of 750ish easily...
Old 10-04-2007, 08:04 AM
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THese Internals are pretty much bullet proof. Only problems come if you run too lean. #7 piston likes to grenade then.
Old 10-04-2007, 08:12 AM
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a vic jr fixes that problem though


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