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Budget build for boost. 5.3 or 6.0?

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Old 10-13-2012, 05:49 PM
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Default Budget build for boost. 5.3 or 6.0?

Looking for a budget build for a reliable 800-850 RWHP. I've got the turbo decided between the S475 and the PTE7675. I want this car to run on pump gas, but plan on using an FMIC, and the help of meth injection.

My question is, which should I go with and why for a budget build to achieve my power goals? The 5.3 or the 6.0? What's the price difference?
Old 10-13-2012, 06:28 PM
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300 bucks and 1000ish.
Are you going with a forged rotating assembly? Because a stock 5.3 probably isn't going to land you 800 rwhp, but the 6.0s bigger bore is going to get you there easier
Old 10-13-2012, 06:29 PM
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Originally Posted by JohnS Z28
300 bucks and 1000ish.
Are you going with a forged rotating assembly? Because a stock 5.3 probably isn't going to land you 800 rwhp, but the 6.0s bigger bore is going to get you there easier
alot of people are making big power on stock 5.3's beleive it or not!
Old 10-13-2012, 06:37 PM
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Yeah there's a list that somebody made and most people are around the 500-600 mark before it grenades
Old 10-13-2012, 06:49 PM
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Well I don't want to go through all of this and find in the end I wasn't able to hit my goal. I'd gladly do the 6.0 if it is the difference between hitting my goal and not.

My next question is, where do guys go for getting the blocks? Is that $300 ish for the 5.3 and $1000 ish for the 6.0 accurate? I thought they were closer in price for some reason.
Old 10-13-2012, 06:52 PM
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I should also mention, although this will be a budget build, I had planned on doing rod bolts, main/head studs, and good rods and pistons.
Old 10-13-2012, 06:57 PM
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Just found my own answer. Yeah, don't know where the $1,000 6.0 came from. Here's a brand new 6.0 for $750. http://texas-speed.com/p-573-gm-lsx-...ron-block.aspx
Old 10-13-2012, 08:36 PM
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Originally Posted by CALL911
Just found my own answer. Yeah, don't know where the $1,000 6.0 came from. Here's a brand new 6.0 for $750. http://texas-speed.com/p-573-gm-lsx-...ron-block.aspx
1000 is what a complete used block usually goes for. that one is just the bare block but since your doing rods and pistons anyway that would work for you
Old 10-13-2012, 11:15 PM
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Originally Posted by JohnS Z28
Yeah there's a list that somebody made and most people are around the 500-600 mark before it grenades
Are you kidding?
Old 10-14-2012, 08:31 AM
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Only problem is these words reliable and budget don't go with 850rwhp haha
Old 10-14-2012, 10:08 AM
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Originally Posted by Camaro9969
Only problem is these words reliable and budget don't go with 850rwhp haha
I agree. If you think you're going to have a reliable stock 5.3 that puts down that amount of power, you are wrong.

To be specific to my original question, I'm looking for the cheapest way to make reliable 850 RWHP. But I can't stress enough that for my build, the priority is reliability more than it is budget.

I think this can be done best with going with the 6.0 over the 5.3 for this power range. I think if I had 600-700 RWHP that the 5.3 may be more better suited, but the 6.0 just gives me some more options and power all for barely any more money in the end.

I think for my build, and anyone else contemplating similar goals, that a 6.0 with rod bolts, main/head studs and some good rods and pistons should be the best way to go for reliability over the 800 RWHP for the least money spent.
Old 10-14-2012, 10:40 AM
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if you are starting from scratch it doesnt matter... 5.3 or 6.0. size your turbo accordingly. a pt7675 on a 5.3 will get you 850 rwhp and spool awesome. i prefer a 5.3 because theyre cheap as hell and the thick bore helps keep everything nice and solid IMO. mine has to be making 700 rwhp and i beat the snot out of it. i think the only weak part of these motors is the stock bearings. i can see them being chewed when i cut the filter apart haha..
Old 10-14-2012, 10:40 AM
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and yea no way they grenade at 500-600 rwhp lol..
Old 10-14-2012, 01:05 PM
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Its going to take some pretty high boost numbers to make that 850rwhp with the 7675 and a 5.3. Starting from scratch, Id pick the 6.0 and an S480. If your space limited a PT8847 would work nicely as well.
Old 10-14-2012, 01:31 PM
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Originally Posted by LS1NOVA
Its going to take some pretty high boost numbers to make that 850rwhp with the 7675 and a 5.3. Starting from scratch, Id pick the 6.0 and an S480. If your space limited a PT8847 would work nicely as well.
Thanks for the info. How are the prices on the S480 and PT8847?
Old 10-14-2012, 02:14 PM
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Originally Posted by CALL911
Thanks for the info. How are the prices on the S480 and PT8847?
I'm not sure on the pt but a new s480 you can get under 1000 but you might want the upgrades like race cover or billet wheel



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