easy ANSWER to 2013 GT500 dilemma!

[GTAHVIT]

Originally Posted by 302-412

Silverado 5.3 335 ft lbs @ 4000, F-150 5.0 380 ft lbs 4250.

Low RPMs... Low... Like 1500 to 2K... Low end torque... you posted peak torque, and that is exactly where you'd expect a DOHC motor to be better...

And the 5.0 is a much better motor than the 5.3 which has been in use since 2002 and largely unchanged.

[302-412]

Push rods have absolutely nothing to do with low end tq production, high swirl rates and velocities through multiple smaller ports and valves and the ability to vary valve overlap do though. I never said a word about boosting systems.

[GTAHVIT]

Originally Posted by 302-412

Push rods have absolutely nothing to do with low end tq production, high swirl rates and velocities through multiple smaller ports and valves and the ability to vary valve overlap do though. I never said a word about boosting systems.

OK.. you win.

[SRT8Tech]

Originally Posted by oldlugs

This is all very nice, but you know which will go down in the history books as being the most powerful factory muscle car available in 2013..? Yeah; not the ZL1.

2013 isnt over yet. Im sure there will be a Dodge out in 2013 with more HP than the 2013 GT500. Might not be considered a "muscle car" but oh well.
Anyway, I cant wait to see what the ZL1 and GT500 do at the track. Hell, i wish i could see some dyno sheets on both because peak HP doesnt really amount to much anyway.

[08-G35s/6MT]

Originally Posted by GTAHVIT

Low RPMs... Low... Like 1500 to 2K... Low end torque... you posted peak torque, and that is exactly where you'd expect a DOHC motor to be better...

And the 5.0 is a much better motor than the 5.3 which has been in use since 2002 and largely unchanged.

Hmm... interesting. Before the stroker, my 4.0 straight six jeep cherokee had more low end/off idle torque than my buddy's Silverado extended cab with the 5.3 LS engine(which peaks torque at like 4,000 and has a good chunk from 2-3,000 but not much off idle like my 4.0 had)... No replacement for displacement on off idle power though I agree. Inline 6> V8 for low end off idle torque. That's why theyr'e the perfect engine for rock crawling, not over powered V8's.

[SSE 4 2SS]

Originally Posted by 08-G35s/6MT

Hmm... interesting. Before the stroker, my 4.0 straight six jeep cherokee had more low end that my buddy's 5.3 LS engine... and it was faster too. No replacement for displacement on off idle power though I agre. Turbo's are finicky and eventually go out and costs thousands of $ to repair....

Inline engines are known to make more torque than V-engines... for a given cubic inch size...

As for the turbo's. I cant argue the finicky part... though the factories are more ad more looking to them for efficient power... and turbos are usually finicky when they are pushed to the limit all the time... When not over boosting, and properly sixed and designed, they will easily last 250,000 miles on big trucks, and over 100,000 on cars...Everything mechanical has a duty cycle... Most boost means less life... it's the nature of everything... Blowers are affected the same way....

[08-G35s/6MT]

Originally Posted by SSE 4 2SS

Inline engines are known to make more torque than V-engines... for a given cubic inch size...

As for the turbo's. I cant argue the finicky part... though the factories are more ad more looking to them for efficient power... and turbos are usually finicky when they are pushed to the limit all the time... When not over boosting, and properly sixed and designed, they will easily last 250,000 miles on big trucks, and over 100,000 on cars...Everything mechanical has a duty cycle... Most boost means less life... it's the nature of everything... Blowers are affected the same way....

My co-worker had the turbochargers go out on his stock Audi S4 2.7 twin turbo, it cost him $4,000 to get new ones installed. I had a Mazda Millenia, when the supercharger went out it cost me $2,500.... But I do see what you are saying...

[SSE 4 2SS]

Originally Posted by 08-G35s/6MT

My co-worker had the turbochargers go out on his stock Audi S4 2.7 twin turbo, it cost him $4,000 to get new ones installed. I had a Mazda Millenia, when the supercharger went out it cost me $2,500.... But I do see what you are saying...

I bet he had a dealer replace them...

The biggest problem with twin turbos is if one goes, it'll probably take the other one with it... Ask me how I know... Going to the Camaro Fest in Phoenix, I made it about five hundred miles and then had to trailer the car the rest of the way... replaced both turbos in Phoenix...

The biggest thing about them to me, and bare in mind, this is my car, my motor and my turbos... I change the oil and filters every 2500 miles... PERIOD. and I use the best oil on the market... Amsoil... My opinion...

[VenomInside]

Originally Posted by SSE 4 2SS

The biggest problem with twin turbos is if one goes, it'll probably take the other one with it...

RX-7's were known for that as well.

[Black GT]

Originally Posted by steeleshark2

Pulley change!!

That's all it's going to take for the 2010+ GT500's to stay ahead of the ZL1's.

Who's faster never ends.

[Deki]

Originally Posted by Unreal

You do realize the gt500 will/can have electronic suspension that will probably be a great setup? People seem to think it won't handle but I think it will do very well.

You can always do what I did. Buy a used low mileage z06 for $40k, put a blower on it and make 700rwhp and not worry about ZL1s or Gt500s.

Or M5s...or F430s...F458....Murcielagos...or GT-Rs....or 911 Turbos....lol

Originally Posted by VenomInside

RX-7's were known for that as well.

RX7 were sequential turbos, so it made sense. In parallel twin turbo set ups, they are independent of each other, so if one goes, the other one will be fine.

[SSE 4 2SS]

Originally Posted by Deki

Or M5s...or F430s...F458....Murcielagos...or GT-Rs....or 911 Turbos....lol..I dont worry about any of those either...



RX7 were sequential turbos, so it made sense. In parallel twin turbo set ups, they are independent of each other, so if one goes, the other one will be fine.

Not so...

Parrallel Twin turbo's feed a common intercooler... If one of the turbo's goes bad, and it doesn't have to grenade... just a slow stoppage of it from an oiling or bearing problem, then it isn't providing anything to the intercooler, and so the opposite turbo is pushing air backwards through the boost pipe and out the air filter... The engine is starved for air, and so to make up for it, the good turbo overspins and burns up its bearings... Ask me how I know... This occured cruising down the highway to the Fest in Phoenix... I had one go bad and had to buy two since the bad one took the good one with it...

It turns out to be an oiling problem, related to questionable orifices being inserted by the kit manufacturer....

[Huggerorange73]

Originally Posted by Black GT

That's all it's going to take for the 2010+ GT500's to stay ahead of the ZL1's.

Who's faster never ends.

At least Ford was smart enough to use forged internals so their owners who do this can sleep soundly at night.

The powdered internals in the ZL1 piss me off more than it's curb weight.

[Deki]

Originally Posted by SSE 4 2SS

Not so...

Parrallel Twin turbo's feed a common intercooler... If one of the turbo's goes bad, and it doesn't have to grenade... just a slow stoppage of it from an oiling or bearing problem, then it isn't providing anything to the intercooler, and so the opposite turbo is pushing air backwards through the boost pipe and out the air filter... The engine is starved for air, and so to make up for it, the good turbo overspins and burns up its bearings... Ask me how I know... This occured cruising down the highway to the Fest in Phoenix... I had one go bad and had to buy two since the bad one took the good one with it...

It turns out to be an oiling problem, related to questionable orifices being inserted by the kit manufacturer....

In that situation, absolutely. But if one turbo was to fail and it was caught right away, I don't think the second turbo would suffer any damage. Either way, you obviously have first hand experience with it and more knowledge than I do, so thank you for the info.