And it's 4-28 day!

[badcatt]

Happy 428 Cobra Jet day!

[propayne]

[xr7g428]

I love those 428 intro pictures

[Matt]

I wonder, in 1968, how much insurance premium you saved by trading the 427SO for a 428CJ…

[DWDykstra]

Q code

[badcatt]

It might have been exactly zero. Hi-performance add on most likely was the same no matter what engine.