Headers with high flow Cats, maybe a Vararam CAI, tune, gears really help especially for a Auto trans !!!!
LS6 on 2002 C5 base
Thread Starter
Instructor
Joined: Jul 2016
Posts: 181
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From: Houston Texas
LS6 on 2002 C5 base
Hello All,
Newbie here. I have a question and hope to get some good feedback.
My car is a 2002 C5 base model, and I am assuming that I have a LS6 intake manifold already, from all the topic/thread that I had read so far, right?
So the question is, can I just go ahead and put a bigger TB like a fast 92 or similar on the car and maybe get some gain from it? what else do I have to change or install for the mod?
Thanks for all the input and comments ahead.
Newbie here. I have a question and hope to get some good feedback.
My car is a 2002 C5 base model, and I am assuming that I have a LS6 intake manifold already, from all the topic/thread that I had read so far, right?
So the question is, can I just go ahead and put a bigger TB like a fast 92 or similar on the car and maybe get some gain from it? what else do I have to change or install for the mod?
Thanks for all the input and comments ahead.
Thread Starter
Instructor
Joined: Jul 2016
Posts: 181
Likes: 32
From: Houston Texas
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
Thread Starter
Instructor
Joined: Jul 2016
Posts: 181
Likes: 32
From: Houston Texas
Thread Starter
Instructor
Joined: Jul 2016
Posts: 181
Likes: 32
From: Houston Texas
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
If you have a Auto trans stock gears are 2.78 (I think) optional gears would be 3.15, any manual trans vette stock is 3.42 and those are a great upgrade for a Auto. If you have a manual 3.90 or 410's but is a more expensive upgrade than a Auto !!!
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Thread Starter
Instructor
Joined: Jul 2016
Posts: 181
Likes: 32
From: Houston Texas
Is the gear upgrade something we can do our-self, or has to be done by a mechanic? If it is a DIY how hard is it to do?
Let just say if I was to obtain a 3.15 gear, then I just do a straight swap or there is some mod to it before the install?
Thanks again I have a lot to learn.
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
Pounder,
Is the gear upgrade something we can do our-self, or has to be done by a mechanic? If it is a DIY how hard is it to do?
Let just say if I was to obtain a 3.15 gear, then I just do a straight swap or there is some mod to it before the install?
Thanks again I have a lot to learn.
Is the gear upgrade something we can do our-self, or has to be done by a mechanic? If it is a DIY how hard is it to do?
Let just say if I was to obtain a 3.15 gear, then I just do a straight swap or there is some mod to it before the install?
Thanks again I have a lot to learn.
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
Pounder,
Is the gear upgrade something we can do our-self, or has to be done by a mechanic? If it is a DIY how hard is it to do?
Let just say if I was to obtain a 3.15 gear, then I just do a straight swap or there is some mod to it before the install?
Thanks again I have a lot to learn.
Is the gear upgrade something we can do our-self, or has to be done by a mechanic? If it is a DIY how hard is it to do?
Let just say if I was to obtain a 3.15 gear, then I just do a straight swap or there is some mod to it before the install?
Thanks again I have a lot to learn.
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
Safety Car
Joined: Mar 2015
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1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
the auto doesn't have as low gears in first and second like the manual. adding lower gears to any car makes a world of difference, allows the engine power to move the car with less effort. I might not be explaining all this right but I hope you get the drift. In my young years I had a 69 Camaro with the 375 hp 396, came with 4.10 gears and was fast. I changed the rear gears to 4.88's and it was a rocket !!!(had headers, traction bars already)
Correction the auto first is 3.06 the manual first is 2.66
auto second is 1.63 the manual second is 1.78
auto third is 1.00 the manual is 1.30
the ZO 6 is a whole different animal
First: 2.97
Second: 2.07
Third: 1.43
Fourth: 1.00
Fifth: 0.84
Sixth: 0.56
Correction the auto first is 3.06 the manual first is 2.66
auto second is 1.63 the manual second is 1.78
auto third is 1.00 the manual is 1.30
the ZO 6 is a whole different animal
First: 2.97
Second: 2.07
Third: 1.43
Fourth: 1.00
Fifth: 0.84
Sixth: 0.56
Last edited by Pounder; Oct 12, 2016 at 12:19 AM.
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
Negative: highway mileage will likely suffer a bit. If you drive a lot of highway miles you might not be as happy switching gears. If you're pulling 2000RPM at a given speed, that would change to 2500. There's a reason GM didn't put 3.42's with auto's, they don't have 2 OD's like a stick.
Positive: see above. At most speeds your engine ends up at a more optimal RPM range. Let's say 1st gears tops out at 40MPH with the 2.73's, with 3.42 it'll top out 25% earlier at 32. So all the usable power has been condensed into 25% less speed.
Positive: see above.
At most speeds your engine ends up at a more optimal RPM range. Let's say 1st gears tops out at 40MPH with the 2.73's, with 3.42 it'll top out 25% earlier at 32. So all the usable power has been condensed into 25% less speed.
Last edited by grantv; Oct 12, 2016 at 12:25 AM.
Thread Starter
Instructor
Joined: Jul 2016
Posts: 181
Likes: 32
From: Houston Texas
Negative: highway mileage will likely suffer a bit. If you drive a lot of highway miles you might not be as happy switching gears. If you're pulling 2000RPM at a given speed, that would change to 2500. There's a reason GM didn't put 3.42's with auto's, they don't have 2 OD's like a stick.
Positive: see above. At most speeds your engine ends up at a more optimal RPM range. Let's say 1st gears tops out at 40MPH with the 2.73's, with 3.42 it'll top out 25% earlier at 32. So all the usable power has been condensed into 25% less speed.
Positive: see above.
At most speeds your engine ends up at a more optimal RPM range. Let's say 1st gears tops out at 40MPH with the 2.73's, with 3.42 it'll top out 25% earlier at 32. So all the usable power has been condensed into 25% less speed.How would I go about checking on the gear ratio? Where would I find that info.?
Thanks
