3600 stall
my sequence was
-OEM 1800 & OEM 3.23 for 4 years
-TCI 2800 & OEM 3.23 in 2006
-TCI 2800 & 4.56 in 2007
-Yank 3600 & 4.56 in 2011
-Yank 3600 & OEM 3.23 in 2012
-Yank 3600 & 3.42 or 3.73 in the spring of 2013
-OEM 1800 & OEM 3.23 for 4 years
-TCI 2800 & OEM 3.23 in 2006
-TCI 2800 & 4.56 in 2007
-Yank 3600 & 4.56 in 2011
-Yank 3600 & OEM 3.23 in 2012
-Yank 3600 & 3.42 or 3.73 in the spring of 2013
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I had 3.23 with ss3600 for the first year. During heads+cam install I had 3.73 installed. Both are good gears. If your that worried about the gears just stay with 3.23.
Honstly though I really dont think its much of a difference. I only lost 2-3mpg from the last build and I dont blame the 3.73 very much for it.
Honstly though I really dont think its much of a difference. I only lost 2-3mpg from the last build and I dont blame the 3.73 very much for it.
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Joined: Aug 2010
Posts: 7,322
Likes: 528
From: Ann Arbor, MI
With 3.42 and 26.5" tires I run about 2300 rpm at 70 mph.
This calculator might help:
http://www.wallaceracing.com/gear-speed.php
Enter:
26 (This is your tire diameter)
.7 (This is OD ratio in 4l60e)
3.23
3.42
3.73
This will show you RPM and MPH for the different rear ratios.
This calculator might help:
http://www.wallaceracing.com/gear-speed.php
Enter:
26 (This is your tire diameter)
.7 (This is OD ratio in 4l60e)
3.23
3.42
3.73
This will show you RPM and MPH for the different rear ratios.
But you do realise what I said though right? The decrease in mpg was not all the 3.73. I installed heads, cam, intake, and smaller boltons at the same time as the 3.73. So if its just the addition of 3.73 then I wouldnt have seen that much decrease in mpg.
Yes I do.
where you allready have 323 not 273 and doing a 3600 stall the stall will give you a great gain
I dont think 323 to 373 on a stalled car is going to make 1/3 the difference the stall will make as far as et drop , with all your highway driving put the gear swap money into another mod youll be happier. , wait till the rear has an issue to change gears ( let sleeping dogs lie)
I dont think 323 to 373 on a stalled car is going to make 1/3 the difference the stall will make as far as et drop , with all your highway driving put the gear swap money into another mod youll be happier. , wait till the rear has an issue to change gears ( let sleeping dogs lie)
If it were me I'd go 4.10s if you are brave enough. When I get a 4k stall in a few months I'll be going 4.10 with a 28 inch tire. But I think 3.73 would be a good choice.
I have an ss3600 with 3.23s and I dd the car a lot depending on the weather. I like it and once its locked its not bad at all. On the highway I'm turning roughly 2k rpms at 65. Driving in town you will lose a few mpgs but nothing drastic.