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The bow tie aluminum heads I am putting on there (GM P/N 12363390) weigh 41 pounds each the cast iron lead sled heads weigh 77lb each (GM casting 14081045).
The only difference between the heads is the cast iron still have the rocker arms on them.
So both heads stripped down to the same configuration likely weighs about 75lb.
That is a 34lb per head difference.
So the heads plus intake manifold saves almost 100lb of weight.
I have not bothered to figure the difference between the cast iron manifolds.
I know the iron manifolds are about 20lb each. If I remember correctly both headers weigh about 25lb but I didn't weigh them.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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