A 4l80e without its factory converter is just shy of 180 lbs. Converter weight depends on what you're putting in it, but is anywhere from 50-80 lbs. It's a solid 50+ lbs heavier than a TH400.
My 69 Firebird with aluminum heads/intake, th400, moser 12 bolt, full interior, no AC was 3630 with my in it, half a tank of fuel and crafstman 150 piece toolset. I haven't weighed it since I've made changes to the brakes and swapped to a 4l80e+TSP converter
The car had standard OE 11" discs all around with iron calipers. Now has 13" front, 12" rear discs with aluminum calipers and lost the vacuum booster and iron master for an aluminum manual master.
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-Jason
1969 Pontiac Firebird
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