What kind of engine? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Nima** · 11-04-2006, 10:02 AM

Hi:
I came cross this wrecked mid 1990 cadillac fleetwood with good engine and tranny. Acutally the whole car is very clean just got rearended somebody badly but engine is ok. Engine has 77000 miles on it. I believe I am gona need an engine very soon, is this something I can use?
Thanks.
Side track: I have a 1979 Z28 with blown engine as my next project. Is the above engine has any vavue for that if I can not use it in my truck?

dave2953 · 11-04-2006, 10:48 AM

I think those came with the 4.5 V8, but it's a transverse mount so you would need to modify some stuff to make it work. I think it would be more work than it's worth, but that's just my opinion. As far as the Z28, if you're asking if you could put that motor in it, you would obviously still have the transverse mount issue, plus I don't think it would make enough power to satisfy you.

manimal · 11-04-2006, 10:53 AM

The early Caddy Northstar has been known to drop cylinder liners,so be careful with the Caddy.

centsless · 11-04-2006, 11:13 AM

Wasn't the 90 fleetwood still rwd? I had a deville with the fwd 4.5. I believe the fleetwood used the small block. I think it is a 305 (5.0). I could be wrong though.

centsless · 11-04-2006, 11:18 AM

Just read the post again....MID 90 Fleetwood could have the LT1 engine. Make sure the label under the hood says 5.7 and not 4.3. The 4.3 looks identical to the 5.7 but is very slow.

**Nima** · 11-04-2006, 11:42 AM

Thanks for the info.

speedracer · 11-04-2006, 12:53 PM

My father drive a 91 fleetwood (90-92 were the same) it's rwd and came with a 305. It could have the optional 350 it would have a badge lower right side of the trunk saying 5.7liter

Machu10 · 11-04-2006, 02:16 PM

If it's RWD then it would have a 305 as standard, or a 350 was optional.

Werewolf · 11-04-2006, 04:58 PM

Agreed. Those cars were B-bodies, same as the Chevy Caprice, Buick Roadmaster...

Anyway, from '91 to '93, they were throttle body injected small block Chev's, although I thought they came with the 350 only. Maybe it was just the more desirable option. Backed by a 4L60 (no e) trans. In '94 they went to the LT-1 or L-99 (same engine, one's 5.7, the other is 4.3 V8) which had the 4L60e, tuned port injection, etcetera.

They're good engines, with a weakness in the timing chain. They stretch and make a diesel sounding noise when they get older. Replacing with a performance single roller set should be a permanent fix.

The 305 makes 160 horsepower, and the 350 makes 180. I believe torque on the 350 was right around 300 foot pounds.

The L-99 4.3L V8 makes 200 horsepower, with maybe 250 torque. The LT-1, I've heard, makes 250 horsepower in the Cadillac, 260 horsepower in other B-body cars. I know the B-body LT-1 has iron heads, and I think the LT-1 Caddy had a belt driven water pump and fan, stealing a few more horses. Torque is 320 foot pounds.

It's easy to switch a TBI small block over to old vehicle use; just change the intake. I don't know that you'd gain or lose any horses, though. If you wanted more out of them, you're looking at a different cam and heads.

It's also possible to switch the LT engines over, or leave them as they are. However, the cost gets a LOT more expensive to even *blink* at one of those engines, let alone pulling it, the wiring, and the computer, and dropping it in an older car.

As for the engine in your Camaro, it's 6 of one, half a dozen of the other if your Caddy is TBI. Either will drop in easily. It's all a matter of what you want out of them.

11-04-2006, 10:02 AM	#1
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,178	What kind of engine? Hi: I came cross this wrecked mid 1990 cadillac fleetwood with good engine and tranny. Acutally the whole car is very clean just got rearended somebody badly but engine is ok. Engine has 77000 miles on it. I believe I am gona need an engine very soon, is this something I can use? Thanks. Side track: I have a 1979 Z28 with blown engine as my next project. Is the above engine has any vavue for that if I can not use it in my truck? __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

11-04-2006, 10:48 AM	#2
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: What kind of engine? I think those came with the 4.5 V8, but it's a transverse mount so you would need to modify some stuff to make it work. I think it would be more work than it's worth, but that's just my opinion. As far as the Z28, if you're asking if you could put that motor in it, you would obviously still have the transverse mount issue, plus I don't think it would make enough power to satisfy you. __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 Last edited by dave2953; 11-04-2006 at 10:52 AM. Reason: added stuff

11-04-2006, 10:53 AM	#3
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: What kind of engine? The early Caddy Northstar has been known to drop cylinder liners,so be careful with the Caddy.

11-04-2006, 11:13 AM	#4
centsless sufficiently talented fool Join Date: Jun 2006 Location: Forest Hill, MD Posts: 2,231	Re: What kind of engine? Wasn't the 90 fleetwood still rwd? I had a deville with the fwd 4.5. I believe the fleetwood used the small block. I think it is a 305 (5.0). I could be wrong though. __________________ "it's impossible to be surrounded by idiots when you are part of the circle" 2003 Suburban 2002 Pontiac Montana 1981 Corvette 1966 Impala Convertible Click here to support the board

11-04-2006, 11:18 AM	#5
centsless sufficiently talented fool Join Date: Jun 2006 Location: Forest Hill, MD Posts: 2,231	Re: What kind of engine? Just read the post again....MID 90 Fleetwood could have the LT1 engine. Make sure the label under the hood says 5.7 and not 4.3. The 4.3 looks identical to the 5.7 but is very slow. __________________ "it's impossible to be surrounded by idiots when you are part of the circle" 2003 Suburban 2002 Pontiac Montana 1981 Corvette 1966 Impala Convertible Click here to support the board

11-04-2006, 11:42 AM	#6
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,178	Re: What kind of engine? Thanks for the info. __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

11-04-2006, 12:53 PM	#7
speedracer Blank Join Date: May 2005 Location: Southington, CT Posts: 221	Re: What kind of engine? My father drive a 91 fleetwood (90-92 were the same) it's rwd and came with a 305. It could have the optional 350 it would have a badge lower right side of the trunk saying 5.7liter __________________ 1969 lwb 4/6 drop 17x8-18x10 torque thrust II's 327-420hp 2004R 3.73 posi. 1977 Corvette 350-375hp 4speed, silver show car. 2002 S10 xtreme, work truck 2004.5 VW jetta GLI 1.8T 6speed, weekend warrior. 2013 Audi A3 TDI, the wife's car

11-04-2006, 02:16 PM	#8
Machu10 Junior Member Join Date: Oct 2006 Location: Central, Iowa Posts: 38	Re: What kind of engine? If it's RWD then it would have a 305 as standard, or a 350 was optional. __________________ 72 Cheyenne Super ShortBox, Factory Big Block, A/C PS PB. 71 Cheyenne LWB, 350, A/C, 48k Miles 70 Olds Cutlass Convert, A/C, 350 auto, 66k actual miles. 82 Corvette, Triple Black, 32k Miles, Had since new. 85 Caprice Coupe, Bottle fed 383 Stroker, 30k miles. 06 Dodge Charger Daytona, Top Banana Hemi.

11-04-2006, 04:58 PM	#9
Werewolf Woof? Join Date: Jun 2005 Location: Raleigh, NC Posts: 276	Re: What kind of engine? Agreed. Those cars were B-bodies, same as the Chevy Caprice, Buick Roadmaster... Anyway, from '91 to '93, they were throttle body injected small block Chev's, although I thought they came with the 350 only. Maybe it was just the more desirable option. Backed by a 4L60 (no e) trans. In '94 they went to the LT-1 or L-99 (same engine, one's 5.7, the other is 4.3 V8) which had the 4L60e, tuned port injection, etcetera. They're good engines, with a weakness in the timing chain. They stretch and make a diesel sounding noise when they get older. Replacing with a performance single roller set should be a permanent fix. The 305 makes 160 horsepower, and the 350 makes 180. I believe torque on the 350 was right around 300 foot pounds. The L-99 4.3L V8 makes 200 horsepower, with maybe 250 torque. The LT-1, I've heard, makes 250 horsepower in the Cadillac, 260 horsepower in other B-body cars. I know the B-body LT-1 has iron heads, and I think the LT-1 Caddy had a belt driven water pump and fan, stealing a few more horses. Torque is 320 foot pounds. It's easy to switch a TBI small block over to old vehicle use; just change the intake. I don't know that you'd gain or lose any horses, though. If you wanted more out of them, you're looking at a different cam and heads. It's also possible to switch the LT engines over, or leave them as they are. However, the cost gets a LOT more expensive to even blink at one of those engines, let alone pulling it, the wiring, and the computer, and dropping it in an older car. As for the engine in your Camaro, it's 6 of one, half a dozen of the other if your Caddy is TBI. Either will drop in easily. It's all a matter of what you want out of them. __________________ 1968 LWB CST BB 2004 Avalanche Z71 LT3. 2003 S-10 ZR2 (hers). 1997 Astro 1992 Caprice wagon, 500k stock miles. Nursing wounds after a bad wreck. 1997 Saturn - need gas mileage from something!



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