Re: 400 sbc much heavier than 305?!?
I'm still not sure about it, but a friend of mine told me the shipping weights on those cargo bills were just rough estimates.
This was the list and the weight of each car;
'86 swb Chevy 400 4900 pounds
'68 Mustang 289 2660 pounds
'67 Cougar 289 2860 pounds
'71 Firebird 400 3750 pounds
'77 MonteCarlo 350 3500 pounds
Looking at this it does seem impossible that a '71 Firebird Formula 400 {pre '73 crash impact standards) with a fibreglass hood weighs more than a big fat '77 Monte Carlo midsize with all power moonroof, locks, windows etc.
Also a '67 Mercury Cougar Dan Gurney Special with hide-aways should be a heck of a lot heavier than a '68 Mustang. Not just 200 pounds more....
So I'll weigh my truck before I pursue this weight issue any further.
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1972 GMC 2500 Sierra 350
1971 Pontiac LeMans Sport 400 GTO/Judge Clone
1970 Pontiac GTO 400 convertible restoproject
1970 Pontiac Bonneville 455 convertible
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