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[ 16 posts ] |
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Danix
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Post subject: 58 TB on a LT1? What is with... Posted: Thu Nov 27, 2003 1:11 pm |
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Joined: Thu Mar 07, 2002 1:36 pm Posts: 117 Location: south - Germany
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Hello,
I´m thinking about changing my stock LT1 TB against a 58 TB. I know I must drill the holes in the intake bigger.
- But what is with gas? Do I need more gas after this change/work?
- And what must I change too?
Or is it like the same. The gas gots higer and higer, and so I ask about the gas.
Hope some knows or have a idea about this.
Danix
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Roy
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Post subject: Posted: Thu Nov 27, 2003 4:41 pm |
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Joined: Sun May 27, 2001 2:52 pm Posts: 5556 Location: Mehlingen,Rhineland Pfalz, Deutschland
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predator
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Post subject: Posted: Thu Nov 27, 2003 5:21 pm |
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Joined: Wed Aug 20, 2003 9:39 pm Posts: 199 Location: Orlando florida
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uh dont waste the money on the 58 or the 52 the 48 will support well into the 400 hp range
_________________ 1994 t/a
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395stang
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Post subject: Posted: Thu Nov 27, 2003 6:34 pm |
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Senior Member |
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Joined: Tue Jul 03, 2001 10:05 pm Posts: 428 Location: N.C.
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THATS FUNNY i HAVE JUST A 308 CI MOTOR AND i HAVE A 70MM THROTTLE BODY.
_________________ many mods,
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predator
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Post subject: Posted: Thu Nov 27, 2003 6:47 pm |
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Joined: Wed Aug 20, 2003 9:39 pm Posts: 199 Location: Orlando florida
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we have twin 48 mm
_________________ 1994 t/a
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Danix
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Post subject: Posted: Thu Nov 27, 2003 8:43 pm |
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Joined: Thu Mar 07, 2002 1:36 pm Posts: 117 Location: south - Germany
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Hmmm, brings it more power or not?
I have a TRANS AM 1996 and aftermark RAM AIR from Suncoastcrations.com with RAM AIR Box.
Now I´m interested in a 58 TB. Is this good for some more HP, or brings other Parts more efficient?
And what is about gas? Do I need more, if I take a biger TB?
Danix
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predator
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Post subject: Posted: Thu Nov 27, 2003 10:17 pm |
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Joined: Wed Aug 20, 2003 9:39 pm Posts: 199 Location: Orlando florida
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you may gain 2 hp it is not worth it spend the 300 dollars on rockers 1.6 which are proven 10 hp unless you are pushing over 400 hp the larger tb will do no good
_________________ 1994 t/a
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SRZ
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Post subject: Posted: Fri Nov 28, 2003 11:38 am |
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Joined: Sun May 27, 2001 3:42 pm Posts: 3430 Location: FL
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58mm is for big cubes, or heads and cam w/ headers which you don't have none of. You car will be slower actually putting that size TB on. Taking in too much air and not having the means to push it all out. 52TB is best for a non modded car since that's the size of the intake anyways. Save your $$ and do like the others suggested get some 1.6 roller rockers and call it a day.
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Danix
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Post subject: Posted: Fri Nov 28, 2003 3:11 pm |
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Joined: Thu Mar 07, 2002 1:36 pm Posts: 117 Location: south - Germany
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Hi,
TB in this size is terrible! OK. What is about the roller rokers? Change only this? Is it this: http://www.lgmotorsports.com/OCLT1_Impala_Engine.htm
Why incrase this more HP? I don´t understand.
Must I change the cam and other engine stuff too?
Is the change hard? Or easy to do?
Danix
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Roy
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Post subject: Posted: Sat Nov 29, 2003 4:37 am |
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Joined: Sun May 27, 2001 2:52 pm Posts: 5556 Location: Mehlingen,Rhineland Pfalz, Deutschland
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ChrisV6
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Post subject: Posted: Sat Nov 29, 2003 10:28 am |
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Joined: Sat Oct 13, 2001 4:53 pm Posts: 1041 Location: Erlangen <=> Coburg
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Do rockers really make such a big difference?
(there are also different ratio rockers for the sixer, thats why i´m asking)
I always believed duration and overlap makes horsepower and not (so much) lift?
_________________
2001 Pontiac Firebird Convertible 3.8l V6 - daily cruiser
1994 Pontiac Firebird 3.4l V6 - new engine one the way
1990 Chevy Beretta GTZ, back on the road in the year 2057
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predator
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Post subject: Posted: Sat Nov 29, 2003 12:21 pm |
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Joined: Wed Aug 20, 2003 9:39 pm Posts: 199 Location: Orlando florida
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the more lift you have the more A/F can move into the cylinder, plus the stamped rockers have lots of friction the rollers dont have as much friction
_________________ 1994 t/a
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predator
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Post subject: Posted: Sun Nov 30, 2003 5:11 pm |
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Joined: Wed Aug 20, 2003 9:39 pm Posts: 199 Location: Orlando florida
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if you are set on a larger t/b i have a 52 mm that i will sell for 200 and you will need no modifications to the intake
_________________ 1994 t/a
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guerardsgt
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Post subject: Posted: Thu Dec 04, 2003 10:11 am |
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Joined: Tue May 29, 2001 10:04 am Posts: 1280 Location: FT Drum Ny
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ZBLKHELLRZR wrote: 58mm is for big cubes, or heads and cam w/ headers which you don't have none of. You car will be slower actually putting that size TB on. Taking in too much air and not having the means to push it all out. 52TB is best for a non modded car since that's the size of the intake anyways. Save your $$ and do like the others suggested get some 1.6 roller rockers and call it a day.
This is the best info for you to listen to (above). There are a lot of people who purchase 58mm TB thinking big power gains. In all reality they sacrifice because the stock LT1 intake is only 52mm. I wouldn't recommend trying to turn your 52mm intake into a 58mm by yourself because the power gains versus a new intake cost if you mess up is not worth it. If you stick with a 52mm you'll notice a small difference, if you want a bigger difference in power take the money you would use to by the TB and buy some 1.6rr. Good luck
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Danix
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Post subject: Posted: Tue Dec 09, 2003 2:11 pm |
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Joined: Thu Mar 07, 2002 1:36 pm Posts: 117 Location: south - Germany
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Thank you verry much.
Hmmm, I´m not the expert of engine work. But I think I can change the 52 TB, if I don´t must drill the intake bigger!?
But I think, I can´t change the rockers.
I have one big question: Do I need more gas if I change this two things? Do I need more fuel/gas?
Danix
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TomTPI
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Post subject: Posted: Tue Aug 17, 2004 8:43 pm |
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Joined: Mon Aug 16, 2004 9:10 pm Posts: 19 Location: Rijswijk, The Netherlands
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Danix wrote: Thank you verry much.
Hmmm, I´m not the expert of engine work. But I think I can change the 52 TB, if I don´t must drill the intake bigger!?
But I think, I can´t change the rockers.
I have one big question: Do I need more gas if I change this two things? Do I need more fuel/gas?
Danix
I'll think a 58mm is a little bit overkill for a slightly moddified LT1, i'll think the best you can do is to stick whith the 48mm and put in an airfoil.
_________________ SPEED KILLS, BUY AN RICER AND YOU STAY ALIVE!!!!!
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