$1000 for mods
Melting Slicks
Joined: Feb 2006
Posts: 2,240
Likes: 0
From: Cleveland OHIO
You dont know what you are saying, the OP stated he wants both top end and quickness.
As anybody who races will tell you, you put the gears in that match the engine and tranny.
Both Wayne and Badduck are right in there own way.
But if you want speed and quickness, well you just cant have both really, but it can be a 12 sec 1/4, that will do 140+ mph in a hurry.
So you compromise, to get both on a limited budget. First mod the engine and tranny(TC), then get the best gears.
For $1k you get headers w/cats and TC, then get a cam and so on.
If you only have $1k and that is all you are going to spend, then get either headers or cam and gears. But if it is DD, then do not go over 3.45 in my opinion.
As anybody who races will tell you, you put the gears in that match the engine and tranny.
Both Wayne and Badduck are right in there own way.
But if you want speed and quickness, well you just cant have both really, but it can be a 12 sec 1/4, that will do 140+ mph in a hurry.
So you compromise, to get both on a limited budget. First mod the engine and tranny(TC), then get the best gears.
For $1k you get headers w/cats and TC, then get a cam and so on.
If you only have $1k and that is all you are going to spend, then get either headers or cam and gears. But if it is DD, then do not go over 3.45 in my opinion.
What do you think a LT1 A4 will tach @ 140 mph with 3.73 rear gears and what do you think it will do if you keep your foot planted ?
Last edited by wayne lowry; May 17, 2008 at 01:12 AM.
Melting Slicks
Joined: May 2007
Posts: 2,171
Likes: 1
From: Warwick RI
wow well i am more confused than ever. and i have a manual first off. and i dont appreciate you hijacking my thread to flame one another. i feel that wayne lowry has the most knowledge here.
while one day i feel i want to do the gears. the next i dont think its such a good idea, and i continue to hear different sides of it on here. so i think i will wait on those. i would like to do the work myself. and i have read what all i need to do involving the cam and that sounds like a lot of work so maybe i will just enjoy my car as is for now and save the money or spend it on some new wheels
while one day i feel i want to do the gears. the next i dont think its such a good idea, and i continue to hear different sides of it on here. so i think i will wait on those. i would like to do the work myself. and i have read what all i need to do involving the cam and that sounds like a lot of work so maybe i will just enjoy my car as is for now and save the money or spend it on some new wheels
Just drive the car and never ask such a loaded question again
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
You dont know what you are saying, the OP stated he wants both top end and quickness.
As anybody who races will tell you, you put the gears in that match the engine and tranny.
Both Wayne and Badduck are right in there own way.
But if you want speed and quickness, well you just cant have both really, but it can be a 12 sec 1/4, that will do 140+ mph in a hurry.
So you compromise, to get both on a limited budget. First mod the engine and tranny(TC), then get the best gears.
For $1k you get headers w/cats and TC, then get a cam and so on.
If you only have $1k and that is all you are going to spend, then get either headers or cam and gears. But if it is DD, then do not go over 3.45 in my opinion.
As anybody who races will tell you, you put the gears in that match the engine and tranny.
Both Wayne and Badduck are right in there own way.
But if you want speed and quickness, well you just cant have both really, but it can be a 12 sec 1/4, that will do 140+ mph in a hurry.
So you compromise, to get both on a limited budget. First mod the engine and tranny(TC), then get the best gears.
For $1k you get headers w/cats and TC, then get a cam and so on.
If you only have $1k and that is all you are going to spend, then get either headers or cam and gears. But if it is DD, then do not go over 3.45 in my opinion.
For example, I have an A4 and according to my GPS I've been in excess of 150MPH in 3rd or Drive (NOT OD) so my topspeed is doing ok with GEARS and it pulls to higher speeds in OD, but what do I know.
Jeez maybe I should get a KN and a CHIP
MIke
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
What I'm saying and have said is he will need GEARS IOT use any decent head cam swap.
For example, I have an A4 and according to my GPS I've been in excess of 150MPH in 3rd or Drive (NOT OD) so my topspeed is doing ok with GEARS and it pulls to higher speeds in OD, but what do I know.
Jeez maybe I should get a KN and a CHIP
MIke
For example, I have an A4 and according to my GPS I've been in excess of 150MPH in 3rd or Drive (NOT OD) so my topspeed is doing ok with GEARS and it pulls to higher speeds in OD, but what do I know.
Jeez maybe I should get a KN and a CHIP
MIke
So either you have a freak engine(not unheard of) or your speedo is toast.
With headers and a very mild cam, I can do barely 140, but I have over 150k on the clock.
So come back to reality, because you are saying your car can do faster than GM's numbers (2.59 gears) without stock gears.
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
A stock LT1 will run 168 m.p.h. flat out ROUGHLY. What do you think an increase of even 100chp will do to the cars top speed ? The answer is not much and ditto the effects of a 3.73 rear gear in relation to top speed. If anything you will reach your drag limited top speed sooner with the numerically higher rear end gears.
What do you think a LT1 A4 will tach @ 140 mph with 3.73 rear gears and what do you think it will do if you keep your foot planted ?
What do you think a LT1 A4 will tach @ 140 mph with 3.73 rear gears and what do you think it will do if you keep your foot planted ?
Can you not get it through your head, the OP wants speed and quickness, not just 1/4 mile.
STOP bitchen at me and think in those terms!!!
Melting Slicks
Joined: Feb 2006
Posts: 2,240
Likes: 0
From: Cleveland OHIO
Combine these overdrive transmissions with a 3.73 axle ratio and you have a fuel-friendly final drive ratio of 2.61:1 (3.73 x 0.70 = 2.61) in high gear. A TH700-R4 overdrive automatic utilizes a First gear of 3.06, a Second of 1.63, a Third of 1.00, and a 0.70 Overdrive. The final drive ratio is what is important here. I find it rather amusing someone who posts their car will barely do 140mph yet wants to challenge someone else to a top speed run. My car traps 126mph and you want to race and make some silly *** remark about it being paid for ? 
When you have a car that will run over 150mph like every normal stock C4 let me know we'll set up this top speed run.
When you have a car that will run over 150mph like every normal stock C4 let me know we'll set up this top speed run.
Last edited by wayne lowry; May 18, 2008 at 01:11 AM.
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
There is no way you were in excess of 150 in 3rd, the top end is only 164 on LT1's w/a4.
So either you have a freak engine(not unheard of) or your speedo is toast.
With headers and a very mild cam, I can do barely 140, but I have over 150k on the clock.
So come back to reality, because you are saying your car can do faster than GM's numbers (2.59 gears) without stock gears.
So either you have a freak engine(not unheard of) or your speedo is toast.
With headers and a very mild cam, I can do barely 140, but I have over 150k on the clock.
So come back to reality, because you are saying your car can do faster than GM's numbers (2.59 gears) without stock gears.
I don't use the speedo on speed runs I have a GPS program on my laptop to log the runs. (it was stated in the post you quoted)
If you would have read my posts or my signature you would know that the only stock part on my engine is the OPTI I have 3.45s and my engine pulls past 6800 in every gear but OD since IT IS NOT STOCK! I don't do 1/4 mile and love long top speed runs however, with 2.59s OD was pretty much USELESS for top speed now its useful. (and I've been past 164mph numerous times without problems)
If a 3.45 rear geared LT1 can will pull to 5100 rpm in OD, the car will be travelling approximately 163, so even a stock LT1 should not lose top speed due to a 3.45 gear swap since the car will be LIMITED by DRAG not overrevving.
However, 3.45s or even 3.7Xs are not the solution for the original poster since he has a M6 but he can go to lower gears (higher numerically) IOT make his stout 6th gear OD ratio useful.
With those gears, it will be well past redline. tell you what I will meet you ANY place and you take your 3.73's and I will run mine and will run pinks top end. But please have your car paid off!!!
Can you not get it through your head, the OP wants speed and quickness, not just 1/4 mile.
STOP bitchen at me and think in those terms!!!
Can you not get it through your head, the OP wants speed and quickness, not just 1/4 mile.
STOP bitchen at me and think in those terms!!!
You shouldn't offer your pinkslip when you don't know what the other guy has
MIke
Last edited by aboatguy; May 18, 2008 at 09:10 AM.
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Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
Combine these overdrive transmissions with a 3.73 axle ratio and you have a fuel-friendly final drive ratio of 2.61:1 (3.73 x 0.70 = 2.61) in high gear. A TH700-R4 overdrive automatic utilizes a First gear of 3.06, a Second of 1.63, a Third of 1.00, and a 0.70 Overdrive. The final drive ratio is what is important here. I find it rather amusing someone who posts their car will barely do 140mph yet wants to challenge someone else to a top speed run. My car traps 126mph and you want to race and make some silly *** remark about it being paid for ? When you have a car that will run over 150mph like every normal stock C4 let me know we'll set up this top speed run.
When you have a car that will run over 150mph like every normal stock C4 let me know we'll set up this top speed run.Well said!!!!!!!
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
[/COLOR]
I don't use the speedo on speed runs I have a GPS program on my laptop to log the runs. (it was stated in the post you quoted)
If you would have read my posts or my signature you would know that the only stock part on my engine is the OPTI I have 3.45s and my engine pulls past 6800 in every gear but OD since IT IS NOT STOCK! I don't do 1/4 mile and love long top speed runs however, with 2.59s OD was pretty much USELESS for top speed now its useful. (and I've been past 164mph numerous times without problems)
If a 3.45 rear geared LT1 can will pull to 5100 rpm in OD, the car will be travelling approximately 163, so even a stock LT1 should not lose top speed due to a 3.45 gear swap since the car will be LIMITED by DRAG not overrevving.
However, 3.45s or even 3.7Xs are not the solution for the original poster since he has a M6 but he can go to lower gears (higher numerically) IOT make his stout 6th gear OD ratio useful.
You shouldn't offer your pinkslip when you don't know what the other guy has
MIke
I don't use the speedo on speed runs I have a GPS program on my laptop to log the runs. (it was stated in the post you quoted)
If you would have read my posts or my signature you would know that the only stock part on my engine is the OPTI I have 3.45s and my engine pulls past 6800 in every gear but OD since IT IS NOT STOCK! I don't do 1/4 mile and love long top speed runs however, with 2.59s OD was pretty much USELESS for top speed now its useful. (and I've been past 164mph numerous times without problems)
If a 3.45 rear geared LT1 can will pull to 5100 rpm in OD, the car will be travelling approximately 163, so even a stock LT1 should not lose top speed due to a 3.45 gear swap since the car will be LIMITED by DRAG not overrevving.
However, 3.45s or even 3.7Xs are not the solution for the original poster since he has a M6 but he can go to lower gears (higher numerically) IOT make his stout 6th gear OD ratio useful.
You shouldn't offer your pinkslip when you don't know what the other guy has
MIke
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
Combine these overdrive transmissions with a 3.73 axle ratio and you have a fuel-friendly final drive ratio of 2.61:1 (3.73 x 0.70 = 2.61) in high gear. A TH700-R4 overdrive automatic utilizes a First gear of 3.06, a Second of 1.63, a Third of 1.00, and a 0.70 Overdrive. The final drive ratio is what is important here. I find it rather amusing someone who posts their car will barely do 140mph yet wants to challenge someone else to a top speed run. My car traps 126mph and you want to race and make some silly *** remark about it being paid for ? When you have a car that will run over 150mph like every normal stock C4 let me know we'll set up this top speed run.
When you have a car that will run over 150mph like every normal stock C4 let me know we'll set up this top speed run. Tell you what, I will drive my car and you drive yours and I will bet you your next years salary that I get better MPG,
You doi not know what you are saying, I have raced cars, so do not tell me what gear do.
A 2.59 will get 27+ highway and a 3.73 MIGHT get 22!!!
Stick to what you know and I am glad your car traps so welll