Looks like a beautiful car, Welcome to the Forum!
Introductions, etc. etc.
1 - 15 of 15 Posts
They're fantastic when you can drive them.
Change the exhaust manifold bolts and avoid some grief. Currently in the process of learning a hard lesson about those bolts.
Change the exhaust manifold bolts and avoid some grief. Currently in the process of learning a hard lesson about those bolts.
They're fantastic when you can drive them.
Change the exhaust manifold bolts and avoid some grief. Currently in the process of learning a hard lesson about those bolts.
Don't worry. headers and exhaust are going on right after the limited slip and 3.55s.
Don't worry. headers and exhaust are going on right after the limited slip and 3.55./QUOTE]What's your source for 3.55? Most of us get either 3.42 or 3.73.
Are you getting rid of your ABS? Or did you already get rid of it?
I was considering using Richmond Gears. Would 3.42s be a better fit for these cars? Also abs remains unmolested for now.
If you prefer ABS remain unmolested, choose between 3.42 or 3.73. Here's how:
The 3.73 vs 3.42 Questionnaire
1. This is my toy, not my daily driver?
Y=3.73 ... or ... N=3.42
2. I'm gonna race, or 'play hard' [for money]?
Y=3.73 ... or ... N=3.42
(also see ?#6, unless you are kidding yourself)
3. I'm gonna tow/haul, or 'work hard' [for money]?
Y=3.73 ... or ... N=3.42
4. I care more about city MpG, less about highway MpG?
Y=3.73 ... or ... N=3.42
5. Many or mostly steep &/or very long hills where I usually drive?
Y=3.73 ... or ... N=3.42
6. I've an extra $600 lying around, just in case I NEED to buy and install a new driveshaft?
Y=3.73 ... or ... N=3.42
7. My valvetrain has [AT LEAST] 1.6 roller rockers AND upgraded valvesprings to support a WOT UpShift of at least 6,000RpM or higher (I've also headers)?
Y=3.73 ... or ... N=3.42
(see ?#1 & ?#2)
If 'N'= 7, you prefer 3.08 / 2.93 / 2.563 - why bother asking?
If 'N'= 4 or 5 or 6 then get 3.42 …
If 'Y'= 4 or 5 or 6 then get 3.73 - and maybe a driveshaft upgrade? Maybe not? Who knows?
If 'Y'= 7 then you NEED 4.11 or more, a definite driveshaft upgrade, a torque converter upgrade, headers, heads, cam …
Upgrade the limited slip differential. If you don't have one, definitely get one.
If you upgrade your torque converter, upgrade your external transmission cooler.
The 3.73 vs 3.42 Questionnaire
1. This is my toy, not my daily driver?
Y=3.73 ... or ... N=3.42
2. I'm gonna race, or 'play hard' [for money]?
Y=3.73 ... or ... N=3.42
(also see ?#6, unless you are kidding yourself)
3. I'm gonna tow/haul, or 'work hard' [for money]?
Y=3.73 ... or ... N=3.42
4. I care more about city MpG, less about highway MpG?
Y=3.73 ... or ... N=3.42
5. Many or mostly steep &/or very long hills where I usually drive?
Y=3.73 ... or ... N=3.42
6. I've an extra $600 lying around, just in case I NEED to buy and install a new driveshaft?
Y=3.73 ... or ... N=3.42
7. My valvetrain has [AT LEAST] 1.6 roller rockers AND upgraded valvesprings to support a WOT UpShift of at least 6,000RpM or higher (I've also headers)?
Y=3.73 ... or ... N=3.42
(see ?#1 & ?#2)
If 'N'= 7, you prefer 3.08 / 2.93 / 2.563 - why bother asking?
If 'N'= 4 or 5 or 6 then get 3.42 …
If 'Y'= 4 or 5 or 6 then get 3.73 - and maybe a driveshaft upgrade? Maybe not? Who knows?
If 'Y'= 7 then you NEED 4.11 or more, a definite driveshaft upgrade, a torque converter upgrade, headers, heads, cam …
Upgrade the limited slip differential. If you don't have one, definitely get one.
If you upgrade your torque converter, upgrade your external transmission cooler.
It's my way of reframing the following ideas:
3. Every Impala SS & 9C1 should have come with 3.42 or 3.73, buyer's choice.
2. Every B- & D- car that came with 2.93 3.08 or 3.231 should have come with 3.231 or 3.42.
1. Every B-car that came with 2.563 should have come with 3.08 or 3.231.
(0. Every B-car that came with an L99 4.3L V8 should have come with an L35 4.3L V6.)
3. Every Impala SS & 9C1 should have come with 3.42 or 3.73, buyer's choice.
2. Every B- & D- car that came with 2.93 3.08 or 3.231 should have come with 3.231 or 3.42.
1. Every B-car that came with 2.563 should have come with 3.08 or 3.231.
(0. Every B-car that came with an L99 4.3L V8 should have come with an L35 4.3L V6.)
Ok I know I asked before, if you are going to take 3.23 to 3 decimals , making it 3.231
Why do you type 3.73 and 3.42 instead of
3.727
3.417
?
Why do you type 3.73 and 3.42 instead of
3.727
3.417
?
Don't forget 2.563.
I'm rounding UP.
I'm rounding UP.
I'm ignoring the others as I am making a point
You are trying to be more accurate by .00077 for 3.23 but ignore .09272 for 3.73
The gear count called 3.23 is a lot closer to
3.23 than
3.42 count is to 3.42 and
3.73 Count is to 3.73
If trying to be accurate in calculations you typically don't round different figures to different decimal points.
You want three decimals 3.231 you got there from rounding up the 7 from 3.2307
The same applys with 3.73
Round down the 2 in 3.7272
Two decimal 3.73 ?
Then you need to round down your 3.231
You are trying to be more accurate by .00077 for 3.23 but ignore .09272 for 3.73
The gear count called 3.23 is a lot closer to
3.23 than
3.42 count is to 3.42 and
3.73 Count is to 3.73
If trying to be accurate in calculations you typically don't round different figures to different decimal points.
You want three decimals 3.231 you got there from rounding up the 7 from 3.2307
The same applys with 3.73
Round down the 2 in 3.7272
Two decimal 3.73 ?
Then you need to round down your 3.231
Yabbut CAFE hates him hates him hates him.Good flow chart Marky.
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