A 69 LeMans hardtop weighs 200 plus pounds more than a 69 Firebird hardtop with the same powertrain and options. A LeMans convertible weighs 50 pounds more than the hardtop LeMans but a Firebird convertible weighs 250 lbs more than the hardtop. So a 69 LeMans and Firebird convertibles weigh the same with the same powertrain and other options. A Custon S convertible weighs 25 pounds less than a Firebird ragtop.
Hard to believe it looking at them but that's what the factory specs say and I have weighed enough cars on drive on scales to confirm it. It's not just the shakers, there is extra bracing in the rockers, the floor pan etc.
btw, a GTO despite what people believe weighs the same as a LeMans apart from the powertrain variance. A 69 Endura bumper weighs the same as the LeMans nose if you include all the components. I've weighed both years ago including the frame brackets and they were the same (GTO didn't have hideaways)
My 69 LeMans convertible weighs 10 pounds more than my 69 GTO convertible. They both are loaded with (A/C, PS, Posi, PDB, PS, PW, posi, duals, 8 track and power antenna etc. The LeMans has 350HO, TH400, power bench seat and the GTO has an M20 but also 400 RAIII, hoodtach, hideaways, power bucket, console, two piece stereo and reclining seat, front and rear shoulder belts.
When you consider all those extra options on the GTO they probably weigh the same 30 odd pounds that having a M20 saves over a TH400.
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My Break Away Squad
1969 Fbird (base OHC, 350, 400HO & Sprint Cvt’s - 400HO & TA ht’s)
1969 Custom S 2dr ht
1969 LeMans (2dr & 4dr ht & Cvt)
1969 LeMans Safari wagon
1969 GTO (2 Cvt, 2 ht & Judge ht)
1969 Cat (3 Cvt’s & a 2dr ht)
1969 Ventura wagon 2 seat
1969 Exec 4dr post
1969 2 Bonnie Cvt's & 2 wagons
1969 Bonnie Brougham (4dr ht & Cvt)
1969 Grand Prix 2 SJ’s
1969 2+2 2dr ht (Canadian)
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