What is the weight of a complete SBC with a TH125 tranny? -the weight of a complete 4.9L caddy motor with the same tranny -of a 3.4 DOHC with the same tranny - and the weight of the 2.8L with the stock Th125 tranny?
thanks eh
-Phil
------------------ "Wanna join a...punk band....shave your head and get a tattoo. Don't need intelligence just attitude!"
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11:01 AM
PFF
System Bot
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
Which SBC? My ZZ4 is 438 lbs (shipping weight, dry, without carb) which is 88lbs heavier than the 2.8L which is 350 lbs. A TH-125 weighs 125 lbs dry 4-speed weighs about 75lbs and the getrag is 76lbs The ZZ4 uses aluminum heads and intake. A cast iron headed LM1/LT1 would weigh more. LS1 would be lighter still.
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11:56 AM
FieroReinke Member
Posts: 1065 From: St James, MO Registered: Feb 2003
My TDC weighs rougly 75 lbs more than the 2.8 all due to the bigger heads, cams, and cam carriers.
I disagree. I will compare the weights on my swap when the time comes, but I don't think it will be more than 25lbs higher. The top end does weigh a lot, but remember, the 2.8s heads are iron, the TDC's are aluminum, which makes a huge difference.
I disagree. I will compare the weights on my swap when the time comes, but I don't think it will be more than 25lbs higher. The top end does weigh a lot, but remember, the 2.8s heads are iron, the TDC's are aluminum, which makes a huge difference.
seriously the 3.4TDC is significantly heavier - the parts may be aluminum but there is a LOT of it - if you've ever looked at a 2.8 and a 3.4tdc side by side its almost twice as big. but i'm not concerned about 75lb when I used to cary around over 80lbs of tools just to be able to work on the 2.8 when something happened
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02:25 PM
THE BEAST Member
Posts: 1177 From: PORT SAINT LUCIE,FLORIDA,USA Registered: Dec 2000
seriously the 3.4TDC is significantly heavier - the parts may be aluminum but there is a LOT of it - if you've ever looked at a 2.8 and a 3.4tdc side by side its almost twice as big. but i'm not concerned about 75lb when I used to cary around over 80lbs of tools just to be able to work on the 2.8 when something happened
Well i can't argue yet, you'd know better than me. But once I get my Fiero, and I fix its engine problem (that red thing under the decklid), we will see. Also, I'll be saving a lot of weight on my 3.4 by removing a lot of crap, ie iron exhaust manis, both intakes, A/C, PS, water pump, and all of those stupid brackets all over the thing.
I disagree. I will compare the weights on my swap when the time comes, but I don't think it will be more than 25lbs higher. The top end does weigh a lot, but remember, the 2.8s heads are iron, the TDC's are aluminum, which makes a huge difference.
I counter disagree - my crate motor weighed in at 440 lbs as the shipping carrier measured, or 465 as GM stamped the crate. It's pretty well agreed upon that a 2.8 weighs abot 350-375 lbs. She may be a little chunky, but she'll go fast nonetheless...
------------------ Chris
Blue 1987 GT Getrag 5 speed, 1" lowering springs, 225 50R16 rims and tires, Fiero Store 9 3/4" HD clutch - Halfway through a 3.4L TDC Swap! Build Thread: https://www.fiero.nl/forum/Forum2/HTML/059801.html Silver 1986 2m4 THM 125c automatic (Current commuter) Black 1985 2m4 SE Isuzu 5 speed (no paperwork)
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03:10 AM
FieroReinke Member
Posts: 1065 From: St James, MO Registered: Feb 2003
I know for a fact that it weighs around 75 lbs more. I weighed my car with the 2.8 at a scale and it was 2850. Weighed it again at the same scale with same amount of fuel it came in a little under 2950. And the scale doesnt lie.
------------------ Chris 3.4 TDC SWAP COMPLETED...this is going to be a fun car
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07:41 AM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
Originally posted by Oreif: My ZZ4 is 438 lbs (shipping weight, dry, without carb)
quote
Originally posted by Blue Shift: ...- my [3.4 DOHC] crate motor weighed in at 440 lbs as the shipping carrier measured, or 465 as GM stamped the crate.
Interesting.
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01:08 PM
PFF
System Bot
rockcrawl Member
Posts: 2528 From: Lehigh Valley, PA Registered: Jul 2000
Here's what they weigh at my house. These aren't some numbers that I pulled out of my a** or found on some website. I weighed them myself. All engines were weighed fully dressed as they would be installed in a Fiero, including starter, alternator, A/C compressor, and stock manifolds, unless noted.
Chevy 3.4 liter DOHC V6- 492.5 lb.
Buick 3800 Series II supercharged- 445 lb.
Cadillac 4.5/4.9 liter PFI V8- 371 lb.
Cadillac 4.6 liter Northstar V8- 468 lb.
Chevrolet 383 V8 aluminum heads and intake, no accesories, no water pump, no manifolds (short block) - 404 lb.
Transmissions- Automatic transmissions include torque converter.
Full tubular suspension! Fully adjustable coilovers front and rear! Poly everything! 3.4L TWIN DUAL CAM V6 240+H.P. Heads p/p! underdrive pulley! Darth chip! Accell performance ignition! Borla exhaust (how sweet)! Darrell Morse strut tower brace Now who ever said that a V6 can be fast????????
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12:45 AM
THE BEAST Member
Posts: 1177 From: PORT SAINT LUCIE,FLORIDA,USA Registered: Dec 2000
so the 4.9 is the only one of significan difference I always new it was lighter due to the aluminum block - gotta love the 80 pound 4speed manual vs the 300lb 4T80
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03:01 PM
Apr 19th, 2005
Marvin McInnis Member
Posts: 11599 From: ~ Kansas City, USA Registered: Apr 2002
