Re: [Chevelle-List] 409 engine

[Z16CHEVELLEGUY]

They made three different 409s in 63. Here are the specs on all three. as you can see they weren't all 425 HP.
                                          Larry (z)

340 H.P. V8-409 4 Barrel 4.3125 x 3.50 409 10.0 340 @ 5000 420 @ 3200 50 .035 .018 30 18436572 6�

400 H.P. V8-409 4 Barrel 4.3125 x 3.50 409 11.0 400 @ 5800 425 @ 3600 50 .035 .018 30 18436572 12�


425 H.P. V8-409 Two 4 Bar. 4.3125 x 3.50 409 11.0 425 @ 6000 425 @ 4200 50 .035 .018 30 18436572 12�