Thankfully, I have 2 good friends who know the ropes. One has done his brother's 68' stang's gears and all his own off-road mo-par stuff (He worked for a performance transmission and drive train shop), and the other one is an A-tech with all his ASE certs for drive train, performance and so-on. I plan on being the go-fer on that job, and do the whole watch and learn thing. Gears are not something I like the idea of jumping in on, I'd probably mess it up and have it blow up on me or scream like hell. If it was my old YJ wrangler, I'd probably say to hell with it and try it. The YJ routinely blew up anyway, didn't matter what I did, but this is my daily driver and my baby... do it once and do it right is the motto on this one.
ok , which is better then turbocharger or supercharger ? i dont like the nitrous idea and for a turbocharger you need turbo headers which is gonna cost 600 dollars seperate from the full kit
I would go turbo...
I've had my s/c for 7months now with a dyno tune at 8psi no problems other than a small belt slip issue. But I still say go turbo.
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Block .20 Bore 3.830, ARP Head Studs, Ford Girdle, Scat 4340 Forged 6.125" H-Beam with Ross Forged Dished Pistons 8:7:1 compression, KPP Cam Reground 224* .587" Intake / 222* .567" Exhaust 114 LCA, 110 IC, Self Ported Heads with Self Ported Upper intake ported lower intake with a matching ported throttle, Mac long tube headers, Flow master 40 series mufflers, 3.73 motive gears, Eaton posi trac, Sct livewire, Bilstien shocks and struts, Eibach pro kit springs. FS: POLISHED VORTECH V2 3.8L KIT
Depends on intended use. If everyday driving and reliability are tops, you can't beat a centrifugal SC with its linear power delivery, ease of service, installation, mpg, and it's not hard on the rotating assembly.
If you're wanting a strip weapon, then a turbo would probably be the ticket re: efficiency.
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
Depends on intended use. If everyday driving and reliability are tops, you can't beat a centrifugal SC with its linear power delivery, ease of service, installation, mpg, and it's not hard on the rotating assembly.
If you're wanting a strip weapon, then a turbo would probably be the ticket re: efficiency.
Just curious.
What makes you say reliability is better with a centri vs a turbo? Turbo 6er cars def get better mileage just ask any of the guys who switched over. As for ease of service I can't see how much harder it would be to service a t/c car over a s/c car. And I would think the s/c running off the crank would be alittle harder on the rotating assembly than the t/c running off exhaust gas. Explain?
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Block .20 Bore 3.830, ARP Head Studs, Ford Girdle, Scat 4340 Forged 6.125" H-Beam with Ross Forged Dished Pistons 8:7:1 compression, KPP Cam Reground 224* .587" Intake / 222* .567" Exhaust 114 LCA, 110 IC, Self Ported Heads with Self Ported Upper intake ported lower intake with a matching ported throttle, Mac long tube headers, Flow master 40 series mufflers, 3.73 motive gears, Eaton posi trac, Sct livewire, Bilstien shocks and struts, Eibach pro kit springs. FS: POLISHED VORTECH V2 3.8L KIT
What makes you say reliability is better with a centri vs a turbo? Turbo 6er cars def get better mileage just ask any of the guys who switched over. As for ease of service I can't see how much harder it would be to service a t/c car over a s/c car. And I would think the s/c running off the crank would be alittle harder on the rotating assembly than the t/c running off exhaust gas. Explain?
1) the boost builds gradually which is far less of a shock than turbo applications, also there is far less heat which degrades rubber/plastic/and oils.
2) There is far less plumbing to get in the way of servicing an SC.
3) Centrifugal units get better mileage then screw units.
__________________
Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
1) the boost builds gradually which is far less of a shock than turbo applications, also there is far less heat which degrades rubber/plastic/and oils.
2) There is far less plumbing to get in the way of servicing an SC.
3) Centrifugal units get better mileage then screw units.
1.) Engine heat or IAT temps? Because I know my underhood temps are not nice and neither are my IAT temps.
2.) I'm not sure what to say define "servicing"
3.) I thought we were talking about centris and turbos?
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Block .20 Bore 3.830, ARP Head Studs, Ford Girdle, Scat 4340 Forged 6.125" H-Beam with Ross Forged Dished Pistons 8:7:1 compression, KPP Cam Reground 224* .587" Intake / 222* .567" Exhaust 114 LCA, 110 IC, Self Ported Heads with Self Ported Upper intake ported lower intake with a matching ported throttle, Mac long tube headers, Flow master 40 series mufflers, 3.73 motive gears, Eaton posi trac, Sct livewire, Bilstien shocks and struts, Eibach pro kit springs. FS: POLISHED VORTECH V2 3.8L KIT
1.) Engine heat or IAT temps? Because I know my underhood temps are not nice and neither are my IAT temps.
2.) I'm not sure what to say define "servicing"
3.) I thought we were talking about centris and turbos?
1) Underhood
2) servicing - working on the engine.
3) that's why I said you can't beat a centrifugal unit's linear power delivery, mpg's, etc.
__________________
Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
3) that's why I said you can't beat a centrifugal unit's linear power delivery, mpg's, etc.
1.)Well I know the vortech underhood temps are pretty DARN hot. I've never been under the hood of a turbo v6 stang but the grand national is alot cooler than my stang after driving it hard.
2.) more detail please.
3) Centri vs turbo: Turbo makes better power curve, gets better mpg.
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Block .20 Bore 3.830, ARP Head Studs, Ford Girdle, Scat 4340 Forged 6.125" H-Beam with Ross Forged Dished Pistons 8:7:1 compression, KPP Cam Reground 224* .587" Intake / 222* .567" Exhaust 114 LCA, 110 IC, Self Ported Heads with Self Ported Upper intake ported lower intake with a matching ported throttle, Mac long tube headers, Flow master 40 series mufflers, 3.73 motive gears, Eaton posi trac, Sct livewire, Bilstien shocks and struts, Eibach pro kit springs. FS: POLISHED VORTECH V2 3.8L KIT
1.)Well I know the vortech underhood temps are pretty DARN hot. I've never been under the hood of a turbo v6 stang but the grand national is alot cooler than my stang after driving it hard.
2.) more detail please.
3) Centri vs turbo: Turbo makes better power curve, gets better mpg.
1) the Grand National was DESIGNED for a turbo, with a better, more efficient cooling system.
2) work on 'em.
3) your statement is incompatible with physics.
It can ONLY get better MPG if you increase the gearing so that both the Turbo AND the SC stepup are boosting at cruising RPM.
In THAT case, the turbo will be more efficient.
If the gearing is stock or close to stock, then the SC will get better MPGs with a more linear power curve.
More air => more fuel.
If the setup is such that there is little lag (IE twin turbos or a smaller sized turbo) then the fuel demand increases as well, and you have a vehicle like the WRX/EVO/Mazdaspeed/SRT-4 that gets the same (or worse) gas mileage than the 8 cylinder GT.
If it's set up for mpgs, then you'll have lag, and a shock to the rotating assembly when it boosts.
You can't have it both ways.
__________________
Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
Last edited by EagleAutosports; 07-29-2008 at 09:46 PM.
Reason: Merged 2 posts
It can ONLY get better MPG if you increase the gearing so that both the Turbo AND the SC stepup are boosting at cruising RPM.
In THAT case, the turbo will be more efficient.
If the gearing is stock or close to stock, then the SC will get better MPGs with a more linear power curve.
Oddly enough, I think EVERYBODY knows turbo cars get better mileage than s/c cars. You seem stuck on your linear power curve not sure why. We'll see how hot my underhood is with the turbo and I'll let you know.
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Block .20 Bore 3.830, ARP Head Studs, Ford Girdle, Scat 4340 Forged 6.125" H-Beam with Ross Forged Dished Pistons 8:7:1 compression, KPP Cam Reground 224* .587" Intake / 222* .567" Exhaust 114 LCA, 110 IC, Self Ported Heads with Self Ported Upper intake ported lower intake with a matching ported throttle, Mac long tube headers, Flow master 40 series mufflers, 3.73 motive gears, Eaton posi trac, Sct livewire, Bilstien shocks and struts, Eibach pro kit springs. FS: POLISHED VORTECH V2 3.8L KIT
Oddly enough, I think EVERYBODY knows turbo cars get better mileage than s/c cars. You seem stuck on your linear power curve not sure why. We'll see how hot my underhood is with the turbo and I'll let you know.
What's the final drive?
Whenever "Everybody" know's something, it usually means they know nothing.
If you don't understand the value of a linear power curve, you've never road raced, nor could you understand why the 300ZX, Supra, and other road racing cars were never single-turboed.
Look up MPGS for the SRT4, et al. they're all 25MPGs. You can't escape physics.
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
Well, the OP was originally talking about beating a stock gt. I assumed he wanted to do that in a straight line not a road course.
I don't know about you but I would rather push a button on a boost EBC or turn a button no a manual boost controller than having to change a belt and a pulley. No we aren't talking about gt's but ever try to change a belt/pulley on a 99-04 vortech'd gt? its not pretty at all.
At 3k rpm since a turbo depends on the exhaust (cruising) its making nothing. At that same 3k your linear s/c (rpm dependent) is making 2psi of boost + turning off the crank (fuel mileage down the drain). Turbo cars get better mileage their is little argument on that subject.
As for reliability if you buy a junk ebay turbo what can you expect most of the stock turbo cars and trucks generally lead to the turbocharger outlasting the motor.
Again the OP was talking about beating a GT, now if he said anything about beating one around a road course we would be sitting here talking about suspension before power in the first place. We'ere talking about going in a straight line try to stay on topic.
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Block .20 Bore 3.830, ARP Head Studs, Ford Girdle, Scat 4340 Forged 6.125" H-Beam with Ross Forged Dished Pistons 8:7:1 compression, KPP Cam Reground 224* .587" Intake / 222* .567" Exhaust 114 LCA, 110 IC, Self Ported Heads with Self Ported Upper intake ported lower intake with a matching ported throttle, Mac long tube headers, Flow master 40 series mufflers, 3.73 motive gears, Eaton posi trac, Sct livewire, Bilstien shocks and struts, Eibach pro kit springs. FS: POLISHED VORTECH V2 3.8L KIT
Well, the OP was originally talking about beating a stock gt. I assumed he wanted to do that in a straight line not a road course.
I don't know about you but I would rather push a button on a boost EBC or turn a button no a manual boost controller than having to change a belt and a pulley. No we aren't talking about gt's but ever try to change a belt/pulley on a 99-04 vortech'd gt? its not pretty at all.
At 3k rpm since a turbo depends on the exhaust (cruising) its making nothing. At that same 3k your linear s/c (rpm dependent) is making 2psi of boost + turning off the crank (fuel mileage down the drain). Turbo cars get better mileage their is little argument on that subject.
As for reliability if you buy a junk ebay turbo what can you expect most of the stock turbo cars and trucks generally lead to the turbocharger outlasting the motor.
Again the OP was talking about beating a GT, now if he said anything about beating one around a road course we would be sitting here talking about suspension before power in the first place. We'ere talking about going in a straight line try to stay on topic.
Who said anything about a straight line? (Hence intended purpose)
What's the MPG for an SRT 4?
I don't know about you, but I'm not even at 2500K at 80 mph . .. (Depends on your rear gearing)
A 4.6L takes up a LOT more space than a 3.8L
I don't take orders from you. -Once he states his intended use, then we can get down to the details.
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
