is it worth it? 5.3 build
12-29-2011, 12:06 AM
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is it worth it? 5.3 build need some help. what could i expect with taking a 5.3, bore it to a 5.7, using stock 5.7 crank roads and pistons, 243 heads, ls6 intake, cam.....is it worth doing?
12-29-2011, 04:32 PM
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eventually ill do forced induction. just wanted to be sure that its still gonna be worth building. like if i get it bored to a 5.7, it should be the same as a 5.7 block, correct?
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12-29-2011, 06:50 PM
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As has been already said, I'd also keep it as a 5.3. Those thick cylinder walls are in your favor, and I don't know you'll really miss the .4 liters when you are jamming air in it.
12-30-2011, 12:12 PM
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but what about before boost. will the 5.3 with 243 heads, custom cam, ls6 intake, and long tubes still make as much power as the same set up except with a 5.7?
12-30-2011, 12:40 PM
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It should make the same power. I would think it would be within 3-5% of the larger engine. It's only about 20 cubes so you might be down 10-20 lbft. If that much.
