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5.3 stroker questions

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Old Oct 19, 2016 | 02:41 PM
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Default 5.3 stroker questions

i have a 94 k2500 i want to swap an LS into its currently got the old sbc 350 in it with the junk tbi crap what is a 5.3 30 over with a 4 inch crank and is that easy? I found a 5.3 for sale for 350$ high mileage when i get paid i plan on buying it id buy a 6.0 but i cant find one unless someodys willing to sell me a 6.0 block lol

i want around 400ish hp and some lower rpm torque

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Old Oct 19, 2016 | 06:56 PM
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400 HP?

Cam, headers, tune. Done.
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Old Oct 19, 2016 | 07:16 PM
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I like the stroked 5.3 idea. That is a cool truck, and you could say 'yeah, its got a 383" stroker'. I have not built one personally, but a stroker will make good torque.
I've got a 6.0 block for sale, cheap, but your probably nowhere near me. I can't believe I can't sell it here locally
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Old Oct 19, 2016 | 08:49 PM
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I'll pm you
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Old Oct 19, 2016 | 08:51 PM
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How do you make a 374 stroker?
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Old Oct 20, 2016 | 06:51 AM
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I have a buddy who is in the process of doing a stroked 5.3, Its an aluminum block with 3.800" pistons and a 4" crank. Should be around 363".
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Old Oct 20, 2016 | 10:10 AM
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Originally Posted by EmeraldFlame
How do you make a 374 stroker?
3.86" bore and a 4' stroke.
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Old Oct 20, 2016 | 10:13 AM
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A stroker isn't required to get to 400HP, but it would no doubt help motivate the heavy truck better with the improved low end torque and horsepower the stroker will offer.
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Old Oct 20, 2016 | 11:04 AM
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Default Aluminum 5.3 "late" short block

My favorite :

1. A "late" 5.3 Aluminum block@88mm (NOT 89mm)
2. A 4.00" OR a 4.10" Crankshaft with 58x TW
3. A set of 6.125" Rods with good bolts
4. A set Race Tec (Auto Tec) Pistons with NPR Steel Rings
5. A LS-7 (IWIS) single row Timing Chain
6. A 2010 Camaro Oil Pump

Lance
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Old Oct 20, 2016 | 01:35 PM
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Originally Posted by EmeraldFlame
i have a 94 k2500 i want to swap an LS into its currently got the old sbc 350 in it with the junk tbi crap what is a 5.3 30 over with a 4 inch crank and is that easy? I found a 5.3 for sale for 350$ high mileage when i get paid i plan on buying it id buy a 6.0 but i cant find one unless someodys willing to sell me a 6.0 block lol

i want around 400ish hp and some lower rpm torque

The cost VS HP gained when stroking an engine isn't there. Grab a set of heads and a cam and be done.

Or better yet leave it alone and put a $190 Gt45 on it and it will make twice the power on baby boost and a 100% stock engine.
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Old Oct 20, 2016 | 01:39 PM
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It already needs a rebuild it's at 250k
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Old Oct 20, 2016 | 01:44 PM
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Bah... we call that broken in the LS turbo world. Your rings will be nice and "pre-gapped". Make sure the bearings are good and your ready to roll.
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Old Oct 20, 2016 | 01:46 PM
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I plan on driving the tbi 350 wile building this I've never messed with ls stuff and this is my first engine build I just hear the ls is a much better design
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Old Oct 20, 2016 | 03:23 PM
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TEA sells a 359ci stroker kit. Wiseco pistons, K1 crank and K1 rods. ~$2000.
http://www.totalengineairflow.com/pr...ting-assembly/
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