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Some dude on the internet
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Discussion Starter #21 (Edited)
March-April 2018

Didn’t take a whole lot of building pics. I figure once you’ve seen one, you’ve seen them all, but here it is. Had crank polished, balanced bottom end. Nothing exotic in the rebuild but here’s what I have:

.020 over flat tops with floating pins
TSP 216/220 .550/.550 112LSA truck cam
LS7 style lifters
BTR 7.35 pushrods
LS6 blue springs
Comp trunnion upgrade
Gen IV “TBSS” breadbox intake and fuel rails
L96 Flex injectors



Special service tool...








Ready to stab, and trans is all one color now.
 

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Solid axle '01 Tahoe/'03 Sierra/'18 Silverado
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374 Posts
Flat tops say "boost" but a 112 lsa cam could go either way.

I'm still thinking you might have some sort of air pump hiding up your sleeve
 

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Some dude on the internet
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642 Posts
Discussion Starter #23
I won’t hold you in suspense for that one. Plan is to keep it NA for the foreseeable future.
 

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Solid axle '01 Tahoe/'03 Sierra/'18 Silverado
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Makes sense. If you were going serious boost, you'd have gone with more LSA.

You just were sort of fore-shadowey with your mystery air box/ducting comment before
 

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Some dude on the internet
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642 Posts
Discussion Starter #25
Lol yeah that’s nothing too special either. Just another OE looking box that looks like it actually belongs there. Idea was to make it all look intentional.
 

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Solid axle '01 Tahoe/'03 Sierra/'18 Silverado
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I can't wait to see an airbox that is more "o.e looking" than an L31 box.

You've got me seriously curious
 

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Some dude on the internet
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Discussion Starter #27
Well I wouldn’t say it’s necessarily “more OE” than the L31 box, but more appropriate for this application, design-wise. But also equally as O.E.
 

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Solid axle '01 Tahoe/'03 Sierra/'18 Silverado
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Now I'm even more curious-er-er

An L31 was the only 5.7 remote air box for a gmt400.

So either not 5.7, and/or not gmt400?
The big block box wasn't too different than the 5.0/5.7 box.

Maybe the 4.3 CPI box?
 

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Solid axle '01 Tahoe/'03 Sierra/'18 Silverado
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374 Posts
Your intake manifold choice already ruled out the only option that would allow for a totally O.E. air box. Which would have been a carburetor manifold, with a 4bbl style throttle body. And then using the totally factory TBI air box.

No idea why I'm so interested in this tiny point.
Bored at home i guess
 

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Some dude on the internet
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Discussion Starter #32
Read and ponder my previous reply a little closer. You’ll get it. Or you could dig through some of my post history and just see it, lol.
 

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Solid axle '01 Tahoe/'03 Sierra/'18 Silverado
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Despite there being a literal boat anchor under the hood. The '90s diesel truck did seem to contribute one thing to the world. Which is a remote air box that seems to pick up air through the same hole in the inner fender that the TBI duct used.

Man it's an ugly as hell box though.
It may "fit" but it also "fits" in the 1980s. A Google image search for them flashed me back to the automotive stone age that the diesel airbox is clearly a product of.

Though it physically bolts under the hood. So that's good
 

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Some dude on the internet
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Discussion Starter #34
Are you looking at the ugly ass square box or the high capacity round box?
 

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Solid axle '01 Tahoe/'03 Sierra/'18 Silverado
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But objectively. Even if you used that abortion, it would be pretty slick because it's a generation-correct air box.

I'm not one to talk. I've done it.
I've done jeep V8 conversions, even Toyota cummins conversions. And used the stupid (and ugly) factory air boxes. So no matter what, it'll be sweet.
 

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Some dude on the internet
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642 Posts
Discussion Starter #38
Easy to service and draws in cool air from the fender as designed. My IAT’s have been excellent, even with headers.
 

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Solid axle '01 Tahoe/'03 Sierra/'18 Silverado
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374 Posts
It worked.

Having completed a smattering of large projects, and watched others with theirs.

I have learned that the only "right" answer to "what's the best way to ____ ?" Is
"Whatever way gets you on the trail"

You didn't, but people often get mired down in trying to do it in the hypothetical "best" way. Which leads projects to cascade into needlessly complicated permutations of their original vision.

You did what worked. That's the "best" way....period.

It might be because this site is slow, it's the only one I'm on besides Instagram.
But I'm really enjoying the slowly doled out bits on this build.

There's a guy on IG doling it out like this right now, and i hate it. But yours is keeping my attention lol

Keep it up👍
 
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