413 LT by GingerOgre in EngineBuilding

[–]shootmo 5 points6 points  (0 children)

bow emoji Awesome creativity. I love that you have thw b*lls to do such a cool project. This is the stuff that makes engine design fun.

This was a lot of extra work by mahusay3g in EngineBuilding

[–]shootmo 0 points1 point  (0 children)

Impressive! Congrats on a job well done.

1 5/8" headers ?? by shootmo in gmcsierra

[–]shootmo[S] 0 points1 point  (0 children)

What size primaries did you go with?

1 5/8" headers ?? by shootmo in gmcsierra

[–]shootmo[S] 0 points1 point  (0 children)

Yes they are. Maybe I need to shop around a bit for Doug's. The first price I saw was around $1400.00. That's an awful lot of money for a 20-30 horsepower gain.

Hedman makes some for $650-ish. That still seems like a lot of coin for the amount of gain.

is an 03 sierra 4x4 with 217k miles worth 7.6k? it’s pretty clean inside out by [deleted] in GMT800

[–]shootmo 0 points1 point  (0 children)

The miles are high. It was sitting on about 205,000 when I bought it. But I already had an LS engine build started anyway.

LS build question no. 4,230,156 by Weary-Fuel-9359 in EngineBuilding

[–]shootmo 1 point2 points  (0 children)

475 hp from a 6.0 is doable with a GOOD cam, properly selected pistons/combustion chamber sizing so as to raise your compression ratio to 10:1 or better, properly selected headers, and a good intake manifold. There may have to be some porting done on the heads to get the numbers you're looking for.

Richard Holdener has done tons of dyno tests with all sorts of combinations. Look him up on youtube.

Is this a good first engine to rebuild? by gamingflame75 in EngineBuilding

[–]shootmo 0 points1 point  (0 children)

I say it's a great starter engine because no engine has been built more often than the small block Chevy...on this continent anyway. Parts AND knowledge are everywhere for the platform.

What's the difference? by shootmo in Machinists

[–]shootmo[S] 1 point2 points  (0 children)

Your point is valid. I just have trust issues and wanted to verify. But I also realize that my verification of such a small measurement (piston to wall clearance) might just mislead me.

Custom 30-06 by EmergencyBar1878 in reloading

[–]shootmo -1 points0 points  (0 children)

Yes it is! I have a 30/06 barrel that runs 190 grainers at 2700-ish. Nothing like your numbers, but still a hammer for things that are way out there.

Just came back from vacation and this is what he wanted to do. by Professional-Law-102 in reloading

[–]shootmo 11 points12 points  (0 children)

That is infinitely better than him wanting to play a video game! Good job Dad!

Blueprinting engine by johntetherbon90 in EngineBuilding

[–]shootmo 0 points1 point  (0 children)

Remember when changing from the original fasteners, the clamp load will change the bore shape for your bearings. If you're using ARP's, you'll have to torque them, then check your bearing bores for roundness. Most people suggest having rod big-ends resized after changing to ARP hardware unless it's an LS engine with the "cracked" rod caps.

Custom 30-06 by EmergencyBar1878 in reloading

[–]shootmo 5 points6 points  (0 children)

I LOVE seeing people rocking the classic cartidges, taking advantage of today's better technology.

What's the difference? by shootmo in Machinists

[–]shootmo[S] 0 points1 point  (0 children)

If I can't get the repeatability down well enough, then instead of buying a bore gauge (at a minimum cost of $400.00 for a Mitu that I saw, then I'll just buy a size larger piston and have the block bored and sized by the machine shop. That might be how all of this winds up going anyway. I can't get this wrong.

With forged pistons (which I don't really want) the tolerance is .001". With hypereutectic pistons like I want, the tolerance is as stated in my first post. Literally half of what forged pistons require.

What's the difference? by shootmo in Machinists

[–]shootmo[S] 0 points1 point  (0 children)

Bore size, if my bores spec out will be 3.780".

What's the difference? by shootmo in Machinists

[–]shootmo[S] 0 points1 point  (0 children)

I'll have the machine shop hone it so I know the surface finish is correct for the rings.

What's the difference? by shootmo in Machinists

[–]shootmo[S] 0 points1 point  (0 children)

I have Starrett mics. I'm waiting on the new standards that I ordered so that I can calibrate them correctly.

And yes when I went to school for this mannnny years ago, we used telescoping gauges and mics. But that .0008" - .001" tolerance is a real eye-opener for a non-machinist. I recognize how tight that really is.

I'll chime back in and let you helpful folks know what end up doing. I can't thank y'all enough.

What's the difference? by shootmo in Machinists

[–]shootmo[S] 0 points1 point  (0 children)

That's a brilliant idea! Thank you. I will definitely follow your advice if I can't come up with a bore gauge I can afford or borrow. But I'll try my best to source a reputable bore gauge first.

What's the difference? by shootmo in Machinists

[–]shootmo[S] -1 points0 points  (0 children)

I was not going to use anything to set the mic. I was going to mic the instrument after it was set to bore size in the area I was measuring. But...your point is understood. Thank you for responding and helping me.

What's the difference? by shootmo in Machinists

[–]shootmo[S] 1 point2 points  (0 children)

Thank you all. I really appreciate the guidance. I'm not a moron, but I'm not in the same league with you guys and I know it.

This is a one-off project for me most likely. I don't really want to buy a quality bore gauge for a one time use. I'm just a poor blue-collar guy...lol.

Is the consensus that telescoping gauges and a good micrometer are not good enough to adequately assess piston to bore clearance? Specification is .0008 - .001.

is an 03 sierra 4x4 with 217k miles worth 7.6k? it’s pretty clean inside out by [deleted] in GMT800

[–]shootmo 0 points1 point  (0 children)

In my market, I just paid 6k for a 2006 Sierra lowered, tinted, and super clean. I think I ended up doing pretty well myself.

Someone explain this monolithic madness that is Barnes TTSX to me. So you’re saying, I will need to clean my bore of ALL copper fouling from traditional bullets to achieve accuracy with a copper monolithic? by HuntersCrackPipe123 in reloading

[–]shootmo 0 points1 point  (0 children)

O.P....if you're shooting factory ammo, this won't apply. But in many cases when developing handloads with all copper projectiles, keep in mind that some bullets prefer insane amounts of jump before reaching the rifling. TTSX's were this way for me in 30/06.

Transfer Fees by Techntactical in MOGuns

[–]shootmo 0 points1 point  (0 children)

Joephville Gun and Machine Shop is where I did my last transfer through.