GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

LS2 heads on 5.3 with a Maggie

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Old Dec 8, 2016 | 10:48 AM
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Default LS2 heads on 5.3 with a Maggie

Would swapping out the stock L59 heads on my 5.3 for the set on my GTO be better? I'm also running a MP112 Radix. I'm ppretty sure I gotta mill the heads to get the compression ratio right, but curious if these heads would be better? Main thing is the blower/head combo

I'm not trying to go nuts just want my Silvy to have a little more power than the hopped up Hemi's and EcoBoosts
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Old Dec 8, 2016 | 04:18 PM
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They will flow a ton more air and yes you will need to kill them. You're right on target.
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Old Dec 8, 2016 | 04:34 PM
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Kill = mill.
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Old Dec 8, 2016 | 05:53 PM
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Originally Posted by ocelot729
Would swapping out the stock L59 heads on my 5.3 for the set on my GTO be better? I'm also running a MP112 Radix. I'm ppretty sure I gotta mill the heads to get the compression ratio right, but curious if these heads would be better? Main thing is the blower/head combo

I'm not trying to go nuts just want my Silvy to have a little more power than the hopped up Hemi's and EcoBoosts
I'd be careful picking on Ecoboost's. The 3.5l twin when tuned is bad ****.

And don't dare jump on a Taurus SHO. Same motor as the Explorer... Right down to the twin turbo.

In stock form they turn 13's.
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Old Dec 8, 2016 | 08:41 PM
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My cousin had his Ecoboost tuned and it's quick, off the line I have him but going down the road a bit he was closing the gap, I just wanna keep the truck as close to top dog in my area. It was easy when everyone had 295-345 horse motors... now everything is pulling down 400+ it seems... lol
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Old Dec 9, 2016 | 12:30 PM
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Originally Posted by AKlowriderZ71
Kill = mill.
Hahaha thanks! My smart phone makes me look stupid.
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