Ok, for anyone keeping track of such things...
I sent my 79 block to the machine shop. Clean, bare, with main caps and bolts weighed in at 147 lbs. Machine shop hot tanked it, new cam bearings, freeze plugs, and .070 shaved from the deck. It weighed in at 136 lbs.
Hard to believe an 11 pound difference, but I'll take all I can get.

_________________
-MattMan
LEANED & MEAN

Interesting, but I would question their scale... 11lbs loss by cleaning and a little machining? 80s blocks I have weighed are in the 140-145 lb range. 60s blocks are 160-170.

Lou

_________________
Home of Slant6-powered fun machines since 1988

I have a digital medical scale. It is usually pretty accurate. I will have to reweigh it. See what numbers I get.
11 lbs seems like an awful lot.

_________________
-MattMan
LEANED & MEAN

Did it have lots of crud in the water jacket?

_________________
Official Cookie and Mater Tormentor.

That I couldn't say. It was a 100,000 mile engine from my Volare Wagon.
I don't really care much how much it weighs, I just like to keep track of things on the race car.

_________________
-MattMan
LEANED & MEAN

Update on the block weight. I reweighed the block more carefully this time and I got 145 lbs, much more realistic than the 136 lbs I got before.
Clean, machined, bare block with main caps and bolts, 145lbs.
(Helps to have good batteries in these scale thingies.)

_________________
-MattMan
LEANED & MEAN

Great. Thanks for the update! I had thought the 70s cast crank blocks were heavier, but I guess not.

Lou

_________________
Home of Slant6-powered fun machines since 1988

Is there any info on the weight of blocks and what years the weight changed?

_________________
1966 Dart GT
4 spd. OD conversion
8 3/4 - 3.55 SG (Sold)

62 Lancer GT
B Body 8 3/4