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Old 02-04-2008, 09:26 AM
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small block big block weight difference

I tried this in the suspension forum but didn't have much luck. I'm about to do a total front end rebuild on my '77 1/2 ton truck. I"m considering putting in front coils from a big block truck to gain a tad of height. Not looking to shine the lights in the trees, but maybe an inch or two. Does anyone know the weight difference between a SBC and BBC? I guess I could put our bathroom scale on the driveway and then jack up the front end to whatever the weight difference is and then re-measure.

Mark

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Old 02-04-2008, 09:40 AM
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I think about 100 to 150 lbs.
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Old 02-04-2008, 11:11 AM
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Hi Mark, There used to be the data in the Knowledge Base but I could not find it. I will have to look around and re-list it.

Here are most of Chevy block's
Chevy Corvair flat 6 #300
Chevy 1.8-2.0 L4 #302 (4) "J car" pushrod
Chevy Chevette 1.6 SOHC #300 (also Opel)
Chevy Vega L4 #285
Chevy II 153 L4 #350
Chevy L6 194-250 #440
Chevy L6 #292
Chevy L6 216/235 #630
Chevy V6-90 229, 4.3 #425
Chevy V6-60 2.8, 3.1 #350
Chevy small block V8 #575 (generic for '60s-'70s motors)
Chevy small block V8 #535 ('59 Corvette 283 w/alum. intake)
Chevy V8 348/409 # 620
Chevy big block V8 #685 Mark IV

found it,
http://www.team.net/sol/tech/engine.html
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Last edited by 1BAD80; 02-04-2008 at 11:17 AM.
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Old 02-04-2008, 01:21 PM
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Thanks for the good info. So, looks like about 110 pounds difference. May have to ck into the BB springs.

Mark
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