5.7 Vortec Upgrade Options

[Supercharged111]

Hmm.. not once. Not even once did I say anything about the bottom end. Not a single time. A cast crank is good for at least 8# all day long. I don't know what conversation y'all reading. But quit telling me I'm wrong about **** I ain't never said.

Y'all can thrash ur ****. I don't rightly give a ****. If I had whatever unicorn fuel y'all running I'd probably thrash my **** too



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So it wasn't you that said this?

And I feel like this should be noted.

Forced induction is a sure way to kill a stock long block. Your stock iron heads are only good for high 9.x/1 at best. With the stock 9.4 c/r if you ONE pound of boost you're at 10.2~.

Adding compression the old fashioned way is safer, will give you a better torque curve, and a helluva lot cheaper

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If I didn't know any better, I'd say you were trolling this thread.

 

[Schurkey]

Iron + carbon = steel.

Well, sort of. In reality it's lots more complex than that. "Steel" and "Cast iron" come in a huge number of varieties, with a bunch of different alloy ingredients--copper, molybdenum, vanadium, chromium, etc.. Looking just at the carbon content:

Iron plus LESS THAN ~2% Carbon = steel. Steel is a low-carbon alloy. Stainless steel may have so little carbon that it can't be hardened by heat-treatment.

Iron plus MORE THAN ~2% carbon = cast iron. Cast iron is a high-carbon alloy. When you see cheap-junk Chinese crankshafts advertised as "Cast Steel", what they mean is "Cast Iron" because there's way too much carbon in the iron to be genuine steel. They're lying to the consumer.

In 1970 regular leaded fuel was 94 octane
Super was 103.

HOW was that octane measured?

Currently, in the USA and Canada, octane is averaged between Motor Octane and Research Octane rating methods, to create "Pump octane" or "Anti-Knock Index" rating.

R + M / 2 = the octane number you see on the gas pumps in USA.

Europe and Australia don't average the two methods. They use the Research Octane method, and that's what's posted on the pumps. It's typically about 4-5 numbers higher than the equivalent AKI rating.

So what method did the USA use in 1970?

 

[Trigger_guard]

So it wasn't you that said this?



If I didn't know any better, I'd say you were trolling this thread.

Last time I checked ,heads go on the top of the engine, but what do I know. I'm just a dumbass

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[Trigger_guard]

Well, sort of. In reality it's lots more complex than that. "Steel" and "Cast iron" come in a huge number of varieties, with a bunch of different alloy ingredients--copper, molybdenum, vanadium, chromium, etc.. Looking just at the carbon content:

Iron plus LESS THAN ~2% Carbon = steel. Steel is a low-carbon alloy. Stainless steel may have so little carbon that it can't be hardened by heat-treatment.

Iron plus MORE THAN ~2% carbon = cast iron. Cast iron is a high-carbon alloy. When you see cheap-junk Chinese crankshafts advertised as "Cast Steel", what they mean is "Cast Iron" because there's way too much carbon in the iron to be genuine steel. They're lying to the consumer.


HOW was that octane measured?

Currently, in the USA and Canada, octane is averaged between Motor Octane and Research Octane rating methods, to create "Pump octane" or "Anti-Knock Index" rating.

R + M / 2 = the octane number you see on the gas pumps in USA.

Europe and Australia don't average the two methods. They use the Research Octane method, and that's what's posted on the pumps. It's typically about 4-5 numbers higher than the equivalent AKI rating.

So what method did the USA use in 1970?

Listen man. You've tried really hard. But this post has zero relivance towards anything.
Doesn't matter how much carbon is them. They're still not aluminum
And I don't care if they got the numbers from a magic 8-ball. If you think your engine will run with 11/1 c/r, then do it. By all means I beg u

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[Supercharged111]

Last time I checked ,heads go on the top of the engine, but what do I know. I'm just a dumbass

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Well if you hurt the long block, you've hurt the short block, so I fail to see your point. Keep digging.

 

[Trigger_guard]

Well if you hurt the long block, you've hurt the short block, so I fail to see your point. Keep digging.

Ok. So I'ma try and explain this as simple as possible.

Vortec heads are iron
Iron heads run hot

Positive intake pressure(boost) = high effective compression

L31 vortecs have a high static compression

High static compression + high effective compression + hot heads = detonation

Detonation = wrecked bottom end

Doesn't matter if it's stock, forged, or a ******* top fuel dragster, the integrity of your short block is irrelevant.

Detonation will kill it




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[Trigger_guard]

You know,. We could have had an intelligent conversation. Y'all could have proved me wrong. I did my research. And I know how Whipple ran boost safely. But none of y'all could tell me. Instead you backed me it a corner and threw hammers at me. "You're a dumbass" and "my truck did this or that" isn't a discussion, it's a dick measuring contest.

So congratulations y'all got bigger *****.
I'm out. Enjoy your circle jerk


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[RDF1]

Dang.
And I couldn't remember if vortec heads were alum or not.

I've never boosted anything but LS engines.
But use to tune my buddy's 98 5.7 vortec on nitrous never had a issue with it up to a 225 shot.

Sent from my HiDiNg PlAcE

 

[Trenton]

Dang.
And I couldn't remember if vortec heads were alum or not.

You know,. We could have had an intelligent conversation. Y'all could have proved me wrong. I did my research. And I know how Whipple ran boost safely. But none of y'all could tell me.
If I didn't know any better, I'd say you were trolling this thread.

Hey y'all calm down this thread was about making more power with bolt ons, I wasn't looking for this honestly-laughable debate lol.
I'm still on the rocks due to the fact I will still need to update my fuel injectors to the MPFI, I'll need a 255 lph fuel pump, headers, regap my spark plugs, of course a cam, and hook that supercharger air filter into my current air box. But having 6 psi of boost with a shift kit would be a badass upgrade.

 

[PlayingWithTBI]

You know what they say - Go big or go home!