Cadillac's most technologically advanced engine since the original arrived in 1992 is the DOHC Northstar unit. Although Oldsmobile, Pontiac, and Buick have borrowed the Northstar architecture for their V8 (and even V6) engines, it was not until the 2004 Pontiac Bonneville that a non-Cadillac used the Northstar name.
The Northstar is broken up into different versions depending on model usage and model year. [edit] 4.6 L
The 270 hp (200 kW) version was available starting in 1993 on the Seville SLS and Eldorado ESC. The Allante, Seville STS and the Eldorado ETC had the 300 hp (224 kW) version of the Northstar. In 1994 the DeVille Concours received the 270 horsepower version of this engine. By 1996 the Northstar engine became standard equipment in the Front Wheel Drive Cadillac line. The 275 horsepower engine was in the Seville SLS 1993-2004, Eldorado ESC 1993-2002, Standard Deville 1996-2005, Devile d'elegance 1997-1999, and Deville DHS 2000-2005. The 300 Horsepower version was used in the Seville STS 1993-2004, Eldorado ETC 1996-2002, Deville Concours 1997-1999, and Deville DTS 2000-2005 [edit] 4.4 L
The 4.4 L versions were all supercharged, exclusive to Cadillac's V-series. The present STS-V engine, since 2006, produces 469 hp (350 kW) and 439 lb·ft (595 N·m) under the SAE certified rating system.
The 2006 - 2008 XLR-V uses the same supercharged Northstar V8 as the STS-V, though output is down somewhat due to design changes made to accommodate the model's more limited underhood space. For the XLR-V, the SAE certified output is 443 hp (330 kW) and 414 lb·ft (561 N·m). The supercharger and four intercoolers are built into the intake manifold.
The bores were reduced in size to increase block strength, increasing the safety margin under boost. [edit] 4.0 L
This is the Oldsmobile Aurora variant, never installed in a Cadillac. The Aurora's cylinder heads had lower flow characteristics to match the engine's reduced size. The 4.0 L engine produces 250 horsepower (190 kW).
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06:12 AM
PFF
System Bot
wildrooster321 Member
Posts: 12 From: valley springs ca usa Registered: Mar 2010
or this CHEVROLET V-8 IMPALA SS VEHICLE SPECIFICATIONS Configuration Five Passenger, four-door sport sedan Front Engine, Front Wheel Drive 110.5" Wheelbase 62.0" Front Track /61.1" Rear Track 3,381 lbs. Total Weight - 2,185 lbs. Front / 1,196 lbs. Rear Drivetrain Aluminum 5.7l LS1 16-Valve Pushrod Engine 4T65-E Four-Speed Automatic Transaxle Chassis Independent, McPhearson Strut Front Suspension Independent, McPhearson Strut Rear Suspension 4-Wheel Disc Brakes With Abs Rack & Pinion Power Assisted Steering Body / Interior PPG Crystal Black Exterior Paint Ebony, Perforated Leather Trim Interior Unique Badging/ Graphics Impala "SS" Interior / Exterior Package Engine Displacement 5.7/ 346 Cu. In. Bore And Stroke 99.00 X 92.00mm (3.898 X 3.622 in.) Compression Ratio 10.0: 1 Torque @ rpm 382.2 lbs.-ft. @ 4600 Rpm Horsepower @ rpm 371.9 bhp @ 5500 Rpm
These are the specs for the demo/prototype Impala SS, with the heavily modified LS1 to get it fitting up front in transverse mount. The actual production vehicles has the 5.3l LS4, which produced 303 bhp. I am currently in the process of rebuilding/modding one to install in my GT, with the F40-MT2 6 speed, rather than the automatic they come mounted to.
Cadillac's most technologically advanced engine since the original arrived in 1992 is the DOHC Northstar unit. Although Oldsmobile, Pontiac, and Buick have borrowed the Northstar architecture for their V8 (and even V6) engines, it was not until the 2004 Pontiac Bonneville that a non-Cadillac used the Northstar name.
The Northstar is broken up into different versions depending on model usage and model year. [edit] 4.6 L
The 270 hp (200 kW) version was available starting in 1993 on the Seville SLS and Eldorado ESC. The Allante, Seville STS and the Eldorado ETC had the 300 hp (224 kW) version of the Northstar. In 1994 the DeVille Concours received the 270 horsepower version of this engine. By 1996 the Northstar engine became standard equipment in the Front Wheel Drive Cadillac line. The 275 horsepower engine was in the Seville SLS 1993-2004, Eldorado ESC 1993-2002, Standard Deville 1996-2005, Devile d'elegance 1997-1999, and Deville DHS 2000-2005. The 300 Horsepower version was used in the Seville STS 1993-2004, Eldorado ETC 1996-2002, Deville Concours 1997-1999, and Deville DTS 2000-2005
[edit] 4.0 L
This is the Oldsmobile Aurora variant, never installed in a Cadillac. The Aurora's cylinder heads had lower flow characteristics to match the engine's reduced size. The 4.0 L engine produces 250 horsepower (190 kW).
There's at least a dozen or so folks here on PFF that are running or installing Northstars in their Fieros. Just use the "search" function above and type in Northstar or N* while searching under Topic Titles (include the archives in your search) and you'll find a host of build threads.
Originally posted by Bloozberry: There's at least a dozen or so folks here on PFF that are running or installing Northstars in their Fieros. Just use the "search" function above and type in Northstar or N* while searching under Topic Titles (include the archives in your search) and you'll find a host of build threads.
And there are also plenty of LSx installs. Both the more common FR versions and the LS4.
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08:14 AM
Aug 2nd, 2010
wildrooster321 Member
Posts: 12 From: valley springs ca usa Registered: Mar 2010
I was looking around late at nite so the brain was not in gear however are not most norstar implants around 200 hp the n*was option 2 for me I much perfer the ls1-4 but with a stick the bad news is im in california so i'm revewing hunting a stick / v8 cofig because I'm being told you need a tranny that was used with the motor at this point I dont care if its a doge or ford config just high hp v8 stick if I cant do that then I will have no choice but to go outlaw or run an auto any suggestions ?
I was looking around late at nite so the brain was not in gear however are not most norstar implants around 200 hp
You're probably thinking of the Caddy 4.9L engine. The Northstar engines are 4.6L engines and start at 275HP (VIN Y) and the VIN 9 versions run 300HP in stock configurations. They can be bumped up considerably though.
As you said before, you're biggest hurdle will be to find a V8 with a stock transmission that will fit in the Fiero's engine bay if you want to remain legal.
Originally posted by Bloozberry: As you said before, you're biggest hurdle will be to find a V8 with a stock transmission that will fit in the Fiero's engine bay if you want to remain legal.
Maybe I'm wrong, but I'm pretty sure GM hasn't sold any FWD cars with a V8 AND stick.
If you go LS3 crate motor, you might be safe though. I don't know. My advice would be 1) ask whoever manages the station that will be inspecting your car if some specific combination is legal, or 2) gtfo of Cali.
