Official Gramps' Memorial Eternal OT Thread

[hog88]

Texas and okie state going to OT....i always pull for whoever is playing Texas...as any Vol fan always should. OKIES had them beat and their 5 turnovers let Texas back in the game.

Agreed. I would pull for ISIS over Texas.

 

[ETV]

235/251 on a 113 will hit a pretty mean lick. My AMX has a 220/230 on 112 lobe centers. Mine is not a roller, but a hydraulic. Aren't the stock LS cams around 30 or so degrees less duration than yours?

Yep. The 6.0s like mine have a higher duration in the 200/205 range. The LS7 though (Z06) has a 211/231 but with a 121 lobe. The older 5.3 LS had a 190/191. I don't know stock specs on the new LTs.

 

[marcusluvsvols]

That brawl with UF(F.U.) and Misery was pretty awesome. Suspensions coming because I saw lots of Haymakers being thrown. Crazy fools swinging at eachothers heads, in helmets. Its bodyblow time when you fighting somebody in a football helmet...or broken hands time. They were throwing down though with coaches right in the middle of it trying to break it up.

Apparently floriduh players didn't like a good hit on Trask right before the half...looks like Trask was running his mouth crossing the field and then it was on....

 

[marcusluvsvols]

Yep. The 6.0s like mine have a higher duration in the 200/205 range. The LS7 though (Z06) has a 211/231 but with a 121 lobe. The older 5.3 LS had a 190/191. I don't know stock specs on the new LTs.

Know yall are talking about cams...what do the numbers mean though? We are talking about opening and shutting valves here right? Not sure how the numbers correlate

 

[ETV]

That brawl with UF(F.U.) and Misery was pretty awesome. Suspensions coming because I saw lots of Haymakers being thrown. Crazy fools swinging at eachothers heads, in helmets. Its bodyblow time when you fighting somebody in a football helmet...or broken hands time. They were throwing down though with coaches right in the middle of it trying to break it up.

Apparently floriduh players didn't like a good hit on Trask right before the half...looks like Trask was running his mouth crossing the field and then it was on....

I expect Sankey will be dropping the hammer on Missouri. Florida will get a slap on the wrist.

 

[DancingOutlaw]

My neighborhood was busy as hell. Kid got her biggest haul of all time. People were super generous.

I did some light supervision to make sure the fruity **** stayed on the porch. I don't need more fruit snacks, I need American made chocolate.

 

[volfanhill]

I did some light supervision to make sure the fruity **** stayed on the porch. I don't need more fruit snacks, I need American made chocolate.

One house gave my kid an Almond Joy. I gave the stank eye back. The baseline assumption in my house is that all Mounds, Almond Joy, whoppers, and candy corn are razor free.

 

[ETV]

Know yall are talking about cams...what do the numbers mean though? We are talking about opening and shutting valves here right? Not sure how the numbers correlate

The duration number, in degrees, is how long the valves stay open off the seat. The higher the number, the longer the intake and exhaust valves stay open. The lobe sep number is the degrees between peak lift on intake and exhaust. The wider the separation (higher number), equals smoother idle, less cylinder pressure, etc. The narrower separation (lower number) equals rougher idle and increased cylinder pressure.

 

[ETV]

GM and Hennessey. This camaro is king of the mullet militia.

 

[marcusluvsvols]

Yep. Floriduh will have suspensions for UGA next week...

 

[1972 Grad]

The duration number, in degrees, is how long the valves stay open off the seat. The higher the number, the longer the intake and exhaust valves stay open. The lobe sep number is the degrees between peak lift on intake and exhaust. The wider the separation (higher number), equals smoother idle, less cylinder pressure, etc. The narrower separation (lower number) equals rougher idle and increased cylinder pressure.

The narrower the lobe separation is, the more overlap you have, and this time that both intake and exhaust valves are open, the more the engine acts like it has a big vacuum leak and rougher idle. Of course, this helps high rpm horsepower. Also, the narrower lobe separation generally has a higher peak torque reading, but in a narrower rpm range, therefore it is more peaky. Spreading the lobe separation generally leads to a wider power range, but maybe a lower peak number than the narrow lobe centers. P.S. I know you know this, but am just adding to what you wrote.

The thing that surprises me is the spread between intake and exhaust duration. I would have thought that you would have an efficient exhaust system with headers, and I figured the head flow on the exhaust side would be way up there on an LS engine. On my AMX, the exhaust flow is only about 70% or less of the intake side.

 

[W.TN.Orange Blood]

GM and Hennessey. This camaro is king of the mullet militia.

Yes, I'll have one of those to go please. Just charge it on my bill ..... TIA.

 

[marcusluvsvols]

The duration number, in degrees, is how long the valves stay open off the seat. The higher the number, the longer the intake and exhaust valves stay open. The lobe sep number is the degrees between peak lift on intake and exhaust. The wider the separation (higher number), equals smoother idle, less cylinder pressure, etc. The narrower separation (lower number) equals rougher idle and increased cylinder pressure.

The narrower the lobe separation is, the more overlap you have, and this time that both intake and exhaust valves are open, the more the engine acts like it has a big vacuum leak and rougher idle. Of course, this helps high rpm horsepower. Also, the narrower lobe separation generally has a higher peak torque reading, but in a narrower rpm range, therefore it is more peaky. Spreading the lobe separation generally leads to a wider power range, but maybe a lower peak number than the narrow lobe centers. P.S. I know you know this, but am just adding to what you wrote.

The thing that surprises me is the spread between intake and exhaust duration. I would have thought that you would have an efficient exhaust system with headers, and I figured the head flow on the exhaust side would be way up there on an LS engine. On my AMX, the exhaust flow is only about 70% or less of the intake side.

Thanks guys. I get it. I think anyway. I certainly understand about which valves open and why, never knew that BOTH were ever open at the same time. Wow. Ok. And it actually makes it run smoother with that overlap but reduces compression obviously so reduced power...again we are talkIng about thousandths of a second here...

 

[ETV]

The narrower the lobe separation is, the more overlap you have, and this time that both intake and exhaust valves are open, the more the engine acts like it has a big vacuum leak and rougher idle. Of course, this helps high rpm horsepower. Also, the narrower lobe separation generally has a higher peak torque reading, but in a narrower rpm range, therefore it is more peaky. Spreading the lobe separation generally leads to a wider power range, but maybe a lower peak number than the narrow lobe centers. P.S. I know you know this, but am just adding to what you wrote.

The thing that surprises me is the spread between intake and exhaust duration. I would have thought that you would have an efficient exhaust system with headers, and I figured the head flow on the exhaust side would be way up there on an LS engine. On my AMX, the exhaust flow is only about 70% or less of the intake side.

The OEM heads have good intake ports and crap exhaust ports. You can take some factory heads, hand port them and assist with the flow, but CNC porting is the way to go and if you're going to spend that money, IMO, invest in a set of aftermarket heads. Be careful hand porting. I found out the hard way last year during the 5.3 rebuild.
Also, the stock exhaust manifolds are 1.675". Compare that to aftermarket headers offering 1.750" and 1.875" diameter, opening and improving that airflow.

The aftermarket companies have taken LS heads to another level. For instance, AFR and MAST have all CNC work done and their heads flow up to almost 400 cfm @ .700 lift.

 

[marcusluvsvols]

GM and Hennessey. This camaro is king of the mullet militia.

Here's my only problem with the apparently $120k camaro..because they say in the video half the cost of the Mc600..which makes 597HP itself....so that Camaro with the extra weight probably has 750 or 800hp...

But. There's a reason they did 20mph roll ons for both races instead of just lining them up at a stop, right? Either the McLaren is AWD and smokes it from a standstill, or they are both just RWD but they can't get the Camaro to hookup well from a standstill and the Mc600 smokes it....also, did you see how the guy in the Camaro stood on his a half second early both times...so his super charger was already pushing boost while those twin turbos on the 600 were still spooling up. Dont get me wrong, that Camaro is without a doubt a MONSTER, and wasn't using nitrous etc, it could actually be a "daily driver" and probably makes 800hp...but they seemed to have set up the perfect scenario for a "muscle car" to outrun a "sports car" in a straight line, from a rolling second gear start ....thats what a muscle car is SUPPOSED to do...on a curvy track, that mid -engined McLaren weighing about half a ton less than that Camaro would put it to shame...like IT is supposed to do.

By the way, they run the 3 million dollar Bugatti and the other 1000 +HP supercars at the nurburgring in Germany to see what cars really ARE fastest over 13 miles of straights and curves...know what the fastest lap ever was? A Porsche EVO....

 

[marcusluvsvols]

The OEM heads have good intake ports and crap exhaust ports. You can take some factory heads, hand port them and assist with the flow, but CNC porting is the way to go and if you're going to spend that money, IMO, invest in a set of aftermarket heads. Be careful hand porting. I found out the hard way last year during the 5.3 rebuild.
Also, the stock exhaust manifolds are 1.675". Compare that to aftermarket headers offering 1.750" and 1.875" diameter, opening and improving that airflow.

The aftermarket companies have taken LS heads to another level. For instance, AFR and MAST have all CNC work done and their heads flow up to almost 400 cfm @ .700 lift.

So kinda weird question maybe, but here goes:

So if I bought a mustang new, 450hp, and I put aftermarket heads on it like you said above...how much HP would it generally gain?

Or would you have to get bigger injectors and high pressure pump...

Or get new headers and exhaust...

What I am asking i guess is does replacing the heads make you need to get more air and or fuel in order to make more power? Or is it just bolting on more power?

How does that affect something like a supercharger or a turbo?

Greatly envy you and 72 for your know how. I have always changed my own oil and brakes etc ...but other than replacing starters, thermostats etc....stuff outside the actual engine block...I dont know what I am doing. I have no more business opening up an engine than I do a nuclear weapon....

 

[AM64]

I will be starting very passive PT almost immediately to try and retain range of motion I was told.

The big thing is to relax and let the therapist do all the work. If you tense up, it hurts more. I took half a hydrocodone for the first session on the second shoulder, and quickly realized I didn't need it. The first shoulder after being immobilized for almost two months was something that would take your breath away. Good luck; I'd bet you'll be fine.

 

[AM64]

7 pm

Trick or Treator count: 0

(I am not counting the lone teenager who was an opportunist and stopped her motorbike long enough to grab a couple of the snickers minis)

For the first time in forty years, we left the light off. We didn't even buy candy. Normally we get a couple of those big bags from Sam's and take out what we like - and still have lots of the other stuff left over.

 

[ETV]

Here's my only problem with the apparently $120k camaro..because they say in the video half the cost of the Mc600..which makes 597HP itself....so that Camaro with the extra weight probably has 750 or 800hp...

But. There's a reason they did 20mph roll ons for both races instead of just lining them up at a stop, right? Either the McLaren is AWD and smokes it from a standstill, or they are both just RWD but they can't get the Camaro to hookup well from a standstill and the Mc600 smokes it....also, did you see how the guy in the Camaro stood on his a half second early both times...so his super charger was already pushing boost while those twin turbos on the 600 were still spooling up. Dont get me wrong, that Camaro is without a doubt a MONSTER, and wasn't using nitrous etc, it could actually be a "daily driver" and probably makes 800hp...but they seemed to have set up the perfect scenario for a "muscle car" to outrun a "sports car" in a straight line, from a rolling second gear start ....thats what a muscle car is SUPPOSED to do...on a curvy track, that mid -engined McLaren weighing about half a ton less than that Camaro would put it to shame...like IT is supposed to do.

By the way, they run the 3 million dollar Bugatti and the other 1000 +HP supercars at the nurburgring in Germany to see what cars really ARE fastest over 13 miles of straights and curves...know what the fastest lap ever was? A Porsche EVO....

Yeah, they tend to show these videos from a single perspective only for the obvious result they're looking for. Remember, Hennessey is an aftermarket performance vendor that caters to GM and Ford performance cars. There's always a catch.

If you want to see something that may surprise you, check out the video of the limited production '14-'15 Z28 running trials @ nurburgring. 7:38 in a stock production car. (LS7 - 427 all NA) Not too shabby. Not the best of track conditions either.

 

[1972 Grad]

Thanks guys. I get it. I think anyway. I certainly understand about which valves open and why, never knew that BOTH were ever open at the same time. Wow. Ok. And it actually makes it run smoother with that overlap but reduces compression obviously so reduced power...again we are talkIng about thousandths of a second here...

Overlap, or when both intake and exhaust valves are open, is increased with the intake and exhaust lobes are ground closer together on the shaft. That makes the intake valve open sooner, and the exhaust valve close later. The overlap number is determined by adding the degrees before top dead center that the intake valve opens to the degrees after top dead center that the exhaust valve closes.

The longer that both valves are open at the same time, the rougher the idle, and the more top end horsepower you can make, provided the rest of your combination will allow it. That means an efficient intake manifold and large enough carburetor/fuel injection to let air/fuel mixture in, enough engine compression, and an efficient exhaust system to let the mixture out. You want everything matched to your rpm range where you want to make power.

 

[1972 Grad]

So kinda weird question maybe, but here goes:

So if I bought a mustang new, 450hp, and I put aftermarket heads on it like you said above...how much HP would it generally gain?

Or would you have to get bigger injectors and high pressure pump...

Or get new headers and exhaust...

What I am asking i guess is does replacing the heads make you need to get more air and or fuel in order to make more power? Or is it just bolting on more power?

How does that affect something like a supercharger or a turbo?

Greatly envy you and 72 for your know how. I have always changed my own oil and brakes etc ...but other than replacing starters, thermostats etc....stuff outside the actual engine block...I dont know what I am doing. I have no more business opening up an engine than I do a nuclear weapon....

I'm not to much in the know for the newer cars as far as what heads, fuel injection, superchargers, turbos, etc. My experience is with carbureted cars. I don't know much about how good stock Mustang heads, etc. are so I'm not sure what you can pick up HP wise. The head porting on my old engine is supposed to be worth around 40 horsepower on my modified engine. On a stock engine, it wouldn't be as much because the stock intake, cam, and exhaust would choke it off anyway.

 

[ETV]

So kinda weird question maybe, but here goes:

So if I bought a mustang new, 450hp, and I put aftermarket heads on it like you said above...how much HP would it generally gain?

Or would you have to get bigger injectors and high pressure pump...

Or get new headers and exhaust...

What I am asking i guess is does replacing the heads make you need to get more air and or fuel in order to make more power? Or is it just bolting on more power?

How does that affect something like a supercharger or a turbo?

Greatly envy you and 72 for your know how. I have always changed my own oil and brakes etc ...but other than replacing starters, thermostats etc....stuff outside the actual engine block...I dont know what I am doing. I have no more business opening up an engine than I do a nuclear weapon....

Aftermarket heads are expensive and fords are 4V and DOHC, new territory for me there. More moving parts and that is out of my wheelhouse. There is a blue oval expert in here @NorthDallas40 , care to answer marcus's question?

On the older 302 fords, you could install upgraded heads (GT40) and see almost a 50 hp gain. Keep in mind, simply changing over to headers, minor exhaust changes, cold air intake and a tune will wake the engine up and begin to bring out its potential.

 

[ETV]

So kinda weird question maybe, but here goes:

So if I bought a mustang new, 450hp, and I put aftermarket heads on it like you said above...how much HP would it generally gain?

Or would you have to get bigger injectors and high pressure pump...

Or get new headers and exhaust...

What I am asking i guess is does replacing the heads make you need to get more air and or fuel in order to make more power? Or is it just bolting on more power?

How does that affect something like a supercharger or a turbo?

Greatly envy you and 72 for your know how. I have always changed my own oil and brakes etc ...but other than replacing starters, thermostats etc....stuff outside the actual engine block...I dont know what I am doing. I have no more business opening up an engine than I do a nuclear weapon....

What you're doing in maintenance alone is great and if you want to ever get into engines further without having to start a teardown, checkout youtube. There are a few very good channels that provide how to from start to finish. There are also some shade tree guys that have no business making a video for instructional purposes. Stay away from those guys.

 

[marcusluvsvols]

Yeah, they tend to show these videos from a single perspective only for the obvious result they're looking for. Remember, Hennessey is an aftermarket performance vendor that caters to GM and Ford performance cars. There's always a catch.

If you want to see something that may surprise you, check out the video of the limited production '14-'15 Z28 running trials @ nurburgring. 7:38 in a stock production car. (LS7 - 427 all NA) Not too shabby. Not the best of track conditions either.

Gotta say, that was an impressive lap by both the car AND the driver...they use every single inch of asphalt in those corners and sometimes a little grass too....and they kick that ass end out and spin tires around em too dirt track style to get those fast times in a heavy and RWD car. Those drivers are badasses for sure. Part of me really wants to ride shotgun with em...and part of me knows that I would be scared TO death....you can bet those tires are smoking when he pulls over, and needs a new set quick.

That was what 7mins 30 seconds? I think the record for that Porsche EVO is 5mins 20 seconds...on 13 miles. Anybody wanna do the average MPH on that one,? I think its average speed was about 150mph...which is INSANE on a curvy swervy track like the Ring. IIRC, they said that EVO car makes more downforce than an F1 car...and an F1 car has so much downforce that they say at any speed over 100mph they could drive upside down, on the roof of a tunnel, because the downforce at 100mph is already greater than the weight of the car...and those F1 cars will run 240mph without breaking a sweat. So that EVO car is absolutely GLUED to the track with all that downforce....you can take a ride with them too...i am pretty sure there is video of his entire lap on youtube...

Yep...1160HP...5min19sec...this video explains it kinda...

 

[marcusluvsvols]

I rode along for that entire lap...how bout yall? See how much time he spent at 350km or limited at 367km/h.....thats about 230mph...unreal how fast that car goes from 200mph+ down to 40mph or less for some of those turns....then in just a few seconds has banged 5 gears and is back up over 200mph...I am in love with that car. As beautiful as a car can be (to me) and the fastest car on Earth.

I don't think an F1 car could beat it, do you? It has about 100 more HP than an F1 car and they said it makes more downforce, too...unless the F1 car had a higher limit on its governor for those long straights and could cut a second or two? After riding along for that lap, I just don't see how anyone could do it any faster man...he OWNED that stinkin track IMO...