LT1 long tubes and 3.73s...gains?
#1
LT1 long tubes and 3.73s...gains?
Looking at these two bolt ons as my next mod. The car is basically stock except for the borla exhaust, and *maybe* a hypertech tune. (I have no clue, a sticker under the hood is my only reasoning behind it, bought the car out of state.)
Just curious if someone could shoot me the gains I would see in the quarter. Currently the best time is a 14.7 @ 101 mph. I'm really hesitant on the gear change because I don't like a noisy rearend as it would be a daily driver as well. Only problem with the headers would be installing them A very tight fit haha.
Thanks for the input.
Just curious if someone could shoot me the gains I would see in the quarter. Currently the best time is a 14.7 @ 101 mph. I'm really hesitant on the gear change because I don't like a noisy rearend as it would be a daily driver as well. Only problem with the headers would be installing them A very tight fit haha.
Thanks for the input.
#3
Re: LT1 long tubes and 3.73s...gains?
Is it a 6 speed or auto??? Headers with either one will gain some power. I don't know how much I gained when I did my headers but I could DEFINETLY tell a difference. Make sure you take your time and get everything you need ahead of time. I think mine took about 6-8 hours, of course, I only worked on it a couple hours a day for about 4 days and made sure everything was right.
As far as the gears go, 3.73's in an auto will make a HUGE difference, but then you are going to want to think about a stall to really optimize your gears. In a 6 speed I'm sure you will notice a difference, but it my not be as big of a change as you would think. You would notice a bigger difference with 4.10's, but I know that when I do gears I am most likely going to go with 3.73's just because they will be a better street gear and still perform better than the 3.42.
As far as the gears go, 3.73's in an auto will make a HUGE difference, but then you are going to want to think about a stall to really optimize your gears. In a 6 speed I'm sure you will notice a difference, but it my not be as big of a change as you would think. You would notice a bigger difference with 4.10's, but I know that when I do gears I am most likely going to go with 3.73's just because they will be a better street gear and still perform better than the 3.42.
#4
Re: LT1 long tubes and 3.73s...gains?
You'll need stickier tires if you get gears for sure. Do you know what gears it has now? My brother's completely stock ws6 ran 14.1, so maybe work on your launch. From my understanding a good TC is the best first mod for a A4.
#5
Re: LT1 long tubes and 3.73s...gains?
It is an A4 and with stock gears 3.23s. I was told I can change my ratio with smaller wheels tires, but by the looks of the caliper a 15 might be as low as I can go. I'd much rather manpulate my rearend with smaller tires than new gears, as i've only set up 1 rearend with my buddy on his mustang gt. It doesn't clunk, but does have a whining noise, and I dislike that greatly.
#6
Re: LT1 long tubes and 3.73s...gains?
14.7 @ 101? Are you sure about that mph? Seems a bit high for an A4. Your 60 must really SSSSSSSuck! You can run 12's with 101 mph if you can hook. I gained .3 going to a 3.89 Moser gear. The LT's will add a few more probably. But, dude, seriously - 101?
#7
Re: LT1 long tubes and 3.73s...gains?
Originally Posted by Z28Clark
It is an A4 and with stock gears 3.23s. I was told I can change my ratio with smaller wheels tires, but by the looks of the caliper a 15 might be as low as I can go. I'd much rather manpulate my rearend with smaller tires than new gears, as i've only set up 1 rearend with my buddy on his mustang gt. It doesn't clunk, but does have a whining noise, and I dislike that greatly.
#8
Re: LT1 long tubes and 3.73s...gains?
Originally Posted by chrism400
14.7 @ 101? Are you sure about that mph? Seems a bit high for an A4. Your 60 must really SSSSSSSuck! You can run 12's with 101 mph if you can hook. I gained .3 going to a 3.89 Moser gear. The LT's will add a few more probably. But, dude, seriously - 101?
#9
Re: LT1 long tubes and 3.73s...gains?
I was gonna say! Anyway, the rear will make a nice improvement as will the LT's. You may start thinking about a converter to go with it all like a 2600 or so if you don't want it to affect driving much. A tune from Madz or Bryan Herter would also be huge and they can correct your speedo readings at the same time.
#10
Re: LT1 long tubes and 3.73s...gains?
Yeah, I was thinking of a mail order tune. But im also looking at the hypertech programmer. If i can find one cheap enough i'll buy it, so i can change the speedo myself unless the programmer wont work after the mail order tune.
#11
Re: LT1 long tubes and 3.73s...gains?
96Z stock with 3.73 gear and high stall converter b&m shift kit, CAI. you will need some sticky tires for sure, we just this weeken installed the headers, pacesetter LT's with 3in y-pipe, it took us only about 12hrs or so, thank goodness that my son has smaller hands than I do and is a tech for toyota has the right tools or we would still be there. both sides went in from the top, had to loosen motor mounts, we removed air/pump and egr, replace plug wires, did not have to remove starter but did remove oil filter, no codes, runs a lot better and going to track wednesday night, lots more room under hood now, putting on Edelbrock SDT Muffler, SDT Series, 3 in. Inlet/ Dual 2.50 in. Outlet, Steel, Ti-Tech Coated,
part #EDL-55763 from Summit, get the pipes put on tuesday with 3in pipe with mandrel bens over the axle, in the stock position, no cats. sorry no pictures. last month we were at 14.1 about 94mph, hopeing to seen mid 13's and about 100
part #EDL-55763 from Summit, get the pipes put on tuesday with 3in pipe with mandrel bens over the axle, in the stock position, no cats. sorry no pictures. last month we were at 14.1 about 94mph, hopeing to seen mid 13's and about 100
#12
Re: LT1 long tubes and 3.73s...gains?
Originally Posted by Z28Clark
Yeah, I was thinking of a mail order tune. But im also looking at the hypertech programmer. If i can find one cheap enough i'll buy it, so i can change the speedo myself unless the programmer wont work after the mail order tune.
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