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1991 Seville.. engine upgrades?


The Fred

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I don't know how soon this can happen but I believe I know exactly what I want now,

I want a 1991 Seville with upgraded handling components and brakes and:

A Northstar

Is there any way to make the Northstar give a quick fast throttle response like the 4.5 does?

I've owned several 4.5 and 4.9 Cads in my day and I love the throttle response in the 4.5 cars - I only wish they were not so darned under powered.

Alternatively, how much horsepower can you get out of the 4.9 without making it unhappy and breakable?

MerryChristmas

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They key with the northstar since it all electronically controlled, is to follow the "Overdrive intructions".

The manual says when below 35 (it might be 40) press the gas halfway for spirited driving (EI it will hold the shifts or drop a shift and you goooo).

Above 35/40 press the gas all the way down.

When I started following that over all the time full pedal it didn't "add" extra gas and kept it lean while still giveing it the power to burn rubber :)

The Green's Machines

1998 Deville - high mileage, keeps on going, custom cat-back exhaust

2003 Seville - stock low mileage goodness!

2004 Grand Prix GTP CompG - Smaller supercharger pulley, Ported Exhaust Manifolds, Dyno tune, etc

1998 Firebird Formula - 408 LQ9 Stroker motor swap and all sorts of go fast stuff

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The simplest way to go would be to put a VIN "Y" Northstar in the 4.9. If you want more throttle response, you could put the 3.71 gears in it to replace the higher final ratio in the VIN "Y" transaxle. Alternatively, you could get a VIN "9" engine and transaxle and put a VIN "Y" intake cam in it.

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Putting a NS into a 91 Seville would be more trouble than its worth, probably, near impossible.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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They key with the northstar since it all electronically controlled, is to follow the "Overdrive intructions".

The manual says when below 35 (it might be 40) press the gas halfway for spirited driving (EI it will hold the shifts or drop a shift and you goooo).

Above 35/40 press the gas all the way down.

When I started following that over all the time full pedal it didn't "add" extra gas and kept it lean while still giveing it the power to burn rubber :)

That is the way my 90 seville is..

There is a sweet spot just shy of half way when you're under 35mph

The Northy seems to perform real well once you have a feel for driving it

Putting a NS into a 91 Seville would be more trouble than its worth, probably, near impossible.

It'd be worth it to me.. I always have wanted one and the Allante is too darned ugly :lol:

I was thinking that I could get a good low mile 1991 Seville for $5000 and a donor car for another $5000 and there would be a thousand to ten thousand in misc this misc that

:unsure:

PS: How much does the 1991 Seville weigh compared along side of the Northstar cars? About 3400 vs 4600 - right?

What does the NS weigh? What does the 4.9 weigh?

MerryChristmas

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My '97 Seville has a curb weight of about 3800 pounds. 4600 is way too high -- even for a DeVille I think.

I understand the Northstar powertrain, including the transmission, is about 100 pounds heavier than the 4.9L powertrain. But the Northstar's transmission (4T80-E) is a much heavier-duty unit than what comes with the 4.9L (4T65-E I believe).

If you want Northstar throttle response, get a VIN Y car (SLS, Eldorado, etc). More hp and more torque than the VIN 9 cars below 5000 rpm. ;)

Jason(2001 STS, White Diamond)

"When you turn your car on...does it return the favor?"

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I don't know how soon this can happen but I believe I know exactly what I want now,

I want a 1991 Seville with upgraded handling components and brakes and: A Northstar

Yes, and I want to wake up to find Jessica Simpson in bed beside me. Which of our dreams are more likely?

Posted Image

There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises

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:lol: I see we have the same dream

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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:lol: I see we have the same dream

Yes.

Unfortunately, we have the same Fred!

Regards,

Warren

Posted Image

There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises

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When I do it, and I will,

I'll tell all about it so yall can do it.

By then maybe I can do it to several of them and sell a few of 'em.

MerryChristmas

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Be a Capitalist or work for one.

IPB Image

Work for a Capitalist or be one.

MerryChristmas

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I don't know how soon this can happen but I believe I know exactly what I want now,

I want a 1991 Seville with upgraded handling components and brakes and: A Northstar

Yes, and I want to wake up to find Jessica Simpson in bed beside me. Which of our dreams are more likely?

Guys, I'm so sorry.

Jessica can't possibly be in your dreams.

She's busy, on the phone with me, up in Canada.

post-1542-1153097125.jpg

1989 FWD Fleetwood, Silver

1995 STS Crimson Pearl on Black leather

1997 STS Diamond White

1999 STS Crimson Pearl

2001 STS Silver

2003 STS, Crimson Pearl

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OMG, Ditto Ranger

Why does she remind me of a 55 Caddy? :lol: (keeping this on topic, )

post-2998-1153098341.jpg

post-2998-1153098454.jpg

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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The original Dagmar:

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http://en.wikipedia.org/wiki/Dagmar

Dagmar (November 29, 1921 – October 9, 2001) was a buxom television personality.

She was born in Huntington, West Virginia, United States, as Virginia Ruth Egnor . In the 1940s, she became a fashion photographer's model and later entered show business.

She developed a very successful "dumb blonde" act, and appeared on such shows as Milton Berle's Texaco Star Theater, Broadway Open House, Dagmar's Canteen, and Hollywood Squares.

She was married three times, to Angelo Lewis, Danny Dayton and Richard Hinds. She died at age 79.

She is most famous for giving her stage name to the Dagmar bumper, a chrome bullet-point bulge on the front bumpers of Cadillacs, Buicks and Lincolns built during the 1950s.

Bruce

2023 Cadillac CT4-V Blackwing

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Thanks for that history Bruce, i did not know that! :lol:

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I will be happy enough and just fine with a couple housemaids

One Southern and one Asian

I'm almost afraid to ask, but what is a "housemaid"? A servant/slave of some sort?

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I will be happy enough and just fine with a couple housemaids

One Southern and one Asian

I'm almost afraid to ask, but what is a "housemaid"? A servant/slave of some sort?

:lol:

The saddest thing in life is wasted talent

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There are some crazy commercials I keep seeing on TV Land when I am watching my Sitcoms,

With some lady named Dagmar

I will be happy enough and just fine with a couple housemaids

One Southern and one Asian

I'm almost afraid to ask, but what is a "housemaid"? A servant/slave of some sort?

A housemaid is like a wife but she is not a wife.

She does everything a good wife would do but she does NOT sleep with you at night or have any right or say in anything at all.

It's not like having a slave - you do not beat on your housegirls.. at least, I won't. I want them smiling and beaming when I walk in - not running for cover. :P

MerryChristmas

IPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB Image

Be a Capitalist or work for one.

IPB Image

Work for a Capitalist or be one.

MerryChristmas

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:lol: I see we have the same dream

Yes.

Unfortunately, we have the same Fred!

Regards,

Warren

Here is my dream:

1. WarrenJ wakes up and finds Jessica Simpson in his bed.

2. BBF wakes up and finds Pamela Anderson in his Deville.

3. I wake up and can't find The Fred's posts. :lol:

The saddest thing in life is wasted talent

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:lol: I see we have the same dream

Yes.

Unfortunately, we have the same Fred!

Regards,

Warren

Here is my dream:

1. WarrenJ wakes up and finds Jessica Simpson in his bed.

2. BBF wakes up and finds Pamela Anderson in his Deville.

3. I wake up and do not find The Fred's posts on this forum. :lol:

Put me on your ignore list there, slow one.. :angry:

MerryChristmas

IPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB Image

Be a Capitalist or work for one.

IPB Image

Work for a Capitalist or be one.

MerryChristmas

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There are some crazy commercials I keep seeing on TV Land when I am watching my Sitcoms,

With some lady named Dagmar

I will be happy enough and just fine with a couple housemaids

One Southern and one Asian

I'm almost afraid to ask, but what is a "housemaid"? A servant/slave of some sort?

A housemaid is like a wife but she is not a wife.

She does everything a good wife would do but she does NOT sleep with you at night or have any right or say in anything at all.

It's not like having a slave - you do not beat on your housegirls.. at least, I won't. I want them smiling and beaming when I walk in - not running for cover. :P

So the bad thing about your wife is that she sleeps with you, talks, and has some rights? :lol:

The saddest thing in life is wasted talent

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There are some crazy commercials I keep seeing on TV Land when I am watching my Sitcoms,

With some lady named Dagmar

I will be happy enough and just fine with a couple housemaids

One Southern and one Asian

I'm almost afraid to ask, but what is a "housemaid"? A servant/slave of some sort?

A housemaid is like a wife but she is not a wife.

She does everything a good wife would do but she does NOT sleep with you at night or have any right or say in anything at all.

It's not like having a slave - you do not beat on your housegirls.. at least, I won't. I want them smiling and beaming when I walk in - not running for cover. :P

Do you actually know of anyone personally that has these "housemaids"? Why would someone want to be your housemaid? What would you offer them?

I just checked out your website....dude, you're twisted!

http://afcar.freexxxemail.com/fredmaxwell/

Now I see why you like chasing people with your car.

:lol: I see we have the same dream

Yes.

Unfortunately, we have the same Fred!

Regards,

Warren

Here is my dream:

1. WarrenJ wakes up and finds Jessica Simpson in his bed.

2. BBF wakes up and finds Pamela Anderson in his Deville.

3. I wake up and do not find The Fred's posts on this forum. :lol:

Nothing wrong with dreaming I guess. :lol:

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Do you actually know of anyone personally that has these "housemaids"? Why would someone want to be your housemaid? What would you offer them?

I just checked out your website....dude, you're twisted!

http://afcar.freexxxemail.com/fredmaxwell/

Now I see why you like chasing people with your car.

Who said I like chasing any one?

Don't you want to be able to catch someone who steals something from you, a loved one who is in need of assistance or what have you?

Another reason some didn't like me on that other forum is because I wouldn't tell them what I do for a living ;)

MerryChristmas

IPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB ImageIPB Image

Be a Capitalist or work for one.

IPB Image

Work for a Capitalist or be one.

MerryChristmas

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