Aluminum Block V8s 4.1, 4.5, 4.6, and 4.9 liter engines.

91 STS 4.9 non northstar, supercharger?

Thread Tools
 
Search this Thread
 
  #1  
Old 09-19-2007, 06:36 PM
matts91sts's Avatar
Thread Starter
Join Date: Sep 2007
Posts: 8
Default 91 STS 4.9 non northstar, supercharger?

I am pretty sure my caddy doesnt have a northstar, but I will go on anyhow.
I am in hunt for power. After looking at the engine, a coventional intake doesnt look like it will work, the tb looks huge, and is on top.... 1st question, where do you get an intake for it?
Second, can I get a supercharger, like a weiand 8-71? Or even a turbo kit?
So, where can I get some parts to make her fast?
 
  #2  
Old 09-20-2007, 07:23 AM
G.A.R.Y.'s Avatar
Super Moderator
Join Date: Feb 2007
Posts: 1,646
Default RE: 91 STS 4.9 non northstar, supercharger?

The N* was introduced in 1993..
 
  #3  
Old 09-20-2007, 08:06 AM
Katzmans Caddy's Avatar
Super Moderator
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,461
Default RE: 91 STS 4.9 non northstar, supercharger?

Matt, I havedone a bit of searching and will post some ideas later today. My original post on 4.9 performance is pretty valid. You've got a 200 HP factory engine there that is 16 years old so a supercharger is a good way to end it's life. I do think there a number of small things you can do without going into the engine that could yeild you up to 50 or so HP. The after market supply of go fast goodies is almost non existent for a Cadillac engine so innovation is the key here.
 
  #4  
Old 09-20-2007, 10:52 AM
matts91sts's Avatar
Thread Starter
Join Date: Sep 2007
Posts: 8
Default RE: 91 STS 4.9 non northstar, supercharger?

Thanks for the reply guys! My current engine is a jasper rebuilt. I plan on getting another 4.9, putting it on a stand with performance pistons, rods, mains..... The setup will be transfered onto that engine.
 
  #5  
Old 09-20-2007, 03:08 PM
Katzmans Caddy's Avatar
Super Moderator
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,461
Default RE: 91 STS 4.9 non northstar, supercharger?

I sent Matt a message. Here is the shopping list for him:

1. Allante 4.5 intake and TB, made 200hp on a 4.5 which is 30 cubic inches smaller than a 4.9 which makes 200 HP. The most a Seville 4.5 made was 180 HP.
2. TB spacer
3. hi perfomance wires and ignition parts
4. Cold air intake
5.chip or computer or just advance the timing to 14 degrees ( that's what a chip would do anyway) stockis11 degrees I believe.
6. Good exhaust, use foxpaws set up on the Allante as a model
7. Lower final drive ratio, 3.71 preferred.
8. NOS shot for that quick get-a-way



By the way Matt, really like the look of the 91 Seville, they seem to be a bit forgotten and really don't see too many around. They have a reputation as a good handling and riding car and actually shared their platform with the Eldorado then.[sm=smiley20.gif]
 
  #6  
Old 09-20-2007, 06:41 PM
G.A.R.Y.'s Avatar
Super Moderator
Join Date: Feb 2007
Posts: 1,646
Default RE: 91 STS 4.9 non northstar, supercharger?

I like #8, just let a little air out of the rear tires first.
 
  #7  
Old 09-20-2007, 07:21 PM
Katzmans Caddy's Avatar
Super Moderator
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,461
Default RE: 91 STS 4.9 non northstar, supercharger?

.[sm=nxsmile.gif]
 
  #8  
Old 09-20-2007, 07:36 PM
matts91sts's Avatar
Thread Starter
Join Date: Sep 2007
Posts: 8
Default RE: 91 STS 4.9 non northstar, supercharger?

Thanks for the help guys! I like the look of the car as well.
I will certainally consider all of the options, including some nitrous! Gotta have some juice lol.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rileyj02
Cadillac STS
1
06-16-2014 06:03 PM
rufrydermg
General Tech
1
12-28-2007 07:07 PM
jordansportsfan76
General Tech
3
03-28-2007 03:53 PM
jordansportsfan76
General Tech
1
02-27-2007 10:45 AM
andyg16
Cadillac Seville
0
10-29-2006 02:14 AM



Quick Reply: 91 STS 4.9 non northstar, supercharger?



All times are GMT -5. The time now is 11:21 AM.