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Topic: 360 Engine Weight vs. 410 Engine Weight
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Page 1 of 1 of 18 replies
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October 08, 2008 at
03:17:01 PM
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How much heavier (on average) is a complete 360 steel block (w/ aluminum heads) engine vs. a complete 410 aluminum block (w/ aluminum heads) engine?
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October 08, 2008 at
03:23:10 PM
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I am going to say about 100 lbs. Partly because the weight rule at Knoxville is 1475 for 360's and 1375 for 410's. The cars are basically identical.
MB
Rome wasn't built in a day......but they sure didn't
waste any time burning it down!
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October 08, 2008 at
11:09:26 PM
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Reply to:
Posted By: RunninE on October 08 2008 at 03:17:01 PM
How much heavier (on average) is a complete 360 steel block (w/ aluminum heads) engine vs. a complete 410 aluminum block (w/ aluminum heads) engine?
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The weights are very similar when using a salvage yard 2 bolt block. This is achieved by retrofitting 4 bolt splayed caps and no small amount of milling and grinding on the steel block. I think the big "allowance" for a 360 is for those using a Bow Tie or Dart or similar block. These can easily add as much as 80 pounds. You should also keep in mind restricted head 360's almost always are a derivative of a Brodix 11 head and 410's run a much larger(and heavier) -12 style head. There is some savings with the smaller injectors. So my blowhard answer is it depends.
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October 09, 2008 at
12:25:40 AM
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09/30/2005
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if you pick up a later 410 in the pre wieght WoO days the advantage is closer to 140lbs, yes, the 2 bolt junker 360 blocks are lighter castings as a Dart, Bowtie, ect, the drawback is the cost to retrofit the block to a useable piece, is almost that of a "good" block , cracking and fatiuge are possible to be found on the Junker block,(before or aft) you get what you pay for , it really depends what you, realistically (Hp, wieght,life) want to get out of the mill, I believe the 360's of today are starting to exceed the castings integrity of older GM blocks, if im correct ? who knows, I could be full of shit . JMO!
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October 09, 2008 at
06:52:20 AM
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11/29/2004
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402
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50 cubic inches less at 2# per cubic inch would yield 100 pounds more for the 410 motor but much like the other answers just so much bull feathers. Race 'em!
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October 09, 2008 at
10:40:36 AM
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This message was edited on
October 09, 2008 at
10:41:52 AM by mbmotorspt
It totallie depands on hough much compreshion it has. A 410 with 17 to 1 compreshion will weight more than a 360 with only 14 to 1 compreshion! (Compreshion pushes down harder on the crankshavt)
Sorry.....I could NOT resist after the Haud/flat rr scales debacle!!
MB
(edited for speeling)
Rome wasn't built in a day......but they sure didn't
waste any time burning it down!
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October 09, 2008 at
10:58:48 AM
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68
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Reply to:
Posted By: mbmotorspt on October 09 2008 at 10:40:36 AM
It totallie depands on hough much compreshion it has. A 410 with 17 to 1 compreshion will weight more than a 360 with only 14 to 1 compreshion! (Compreshion pushes down harder on the crankshavt)
Sorry.....I could NOT resist after the Haud/flat rr scales debacle!!
MB
(edited for speeling)
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But wat about the oil? If you had 0 weight oil instead of 20 weight, would you save 20 pounds/quart?
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October 09, 2008 at
11:06:06 AM
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So Mark, if you scale your car with the motor running it will weigh more than if you shut it off??? This is getting good.
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October 09, 2008 at
12:32:12 PM
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Reply to:
Posted By: Ken#9 on October 09 2008 at 11:06:06 AM
So Mark, if you scale your car with the motor running it will weigh more than if you shut it off??? This is getting good.
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What if you were to put magnets on the bottom of the car so when it sits on the scales it would be drawn downward and seem heavier than it really is? 
Phil Taylor
home-theater-systems-advice.com
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October 09, 2008 at
01:04:56 PM
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11/30/2004
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1973
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Reply to:
Posted By: mbmotorspt on October 09 2008 at 10:40:36 AM
It totallie depands on hough much compreshion it has. A 410 with 17 to 1 compreshion will weight more than a 360 with only 14 to 1 compreshion! (Compreshion pushes down harder on the crankshavt)
Sorry.....I could NOT resist after the Haud/flat rr scales debacle!!
MB
(edited for speeling)
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Again, just air up the tires....at 40+ pounds of air per tire, you'll always make weight!
Chuck.....
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October 09, 2008 at
01:18:46 PM
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What if its running? Will it alternate between way heavy due to the downward thrust of the engine, then way light due to the upward thrust?
lol
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October 09, 2008 at
02:28:25 PM
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On a serious note....did you ever notice that Knoxville has a tent/rooflike structure over their scale???
This is so that if the wind is blowing, it will not give a false reading from downforce on the wing!
MB
Rome wasn't built in a day......but they sure didn't
waste any time burning it down!
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October 09, 2008 at
02:47:48 PM
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I thought that was to protect the scale because of the thin ozone layer caused by Global Warming. You know around a race track there is a lot of extra emissions because race cars don't run a catalytic converter.
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October 09, 2008 at
03:54:15 PM
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This message was edited on
October 09, 2008 at
03:57:48 PM by nodust
IF Bull Poop was dynamite, this board would explode! lol
Save your butt, get a colon screening TODAY
For complete line of Sponsor Awards check out
MarshallTownLaser.com
Duane Davis
Laser Engraving
641-751-7777
101 N Center
Marshalltown, Iowa
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October 09, 2008 at
04:10:00 PM
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If you are weighing Mark Kinser's school bus, what is the weight difference between the aforementioned 360steel/410aluminum.
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October 09, 2008 at
05:35:33 PM
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Elma has the best scale I've seen, it's a shed with roll up doors on both ends and the scale is about 8' x 15' in the floor. No question about weight, even with a flat tire.
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October 09, 2008 at
07:11:43 PM
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Reply to:
Posted By: 1800 on October 09 2008 at 05:35:33 PM
Elma has the best scale I've seen, it's a shed with roll up doors on both ends and the scale is about 8' x 15' in the floor. No question about weight, even with a flat tire.
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I heard it had an electronic compression compensator also.
Save your butt, get a colon screening TODAY
For complete line of Sponsor Awards check out
MarshallTownLaser.com
Duane Davis
Laser Engraving
641-751-7777
101 N Center
Marshalltown, Iowa
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October 09, 2008 at
09:24:04 PM
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Joined:
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12/03/2004
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375
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It will depend on how many passengers are riding on the school bus and how many beverages they have consumed.
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October 09, 2008 at
10:38:45 PM
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Reply to:
Posted By: filtalr on October 09 2008 at 12:32:12 PM
What if you were to put magnets on the bottom of the car so when it sits on the scales it would be drawn downward and seem heavier than it really is?
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if the magnets were on the bottom of the car they would be pulling the scale UP, therefore making the car seem lighter!
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