The fourth generation Chevrolet Impala launched in 1965 ditched the GM X frame B body in favour of the GM perimeter frame B body and became the most successful US seller ever with over 1 million units sold.

The fourth generation Impala’s received annual face lifts and the one seen here at Goodwood is a 1968 model that was imported to the UK from possibly Norway in 1978.

Amusingly if one was to check the registration of this vehicle on the DVLA website it shows that the official motor size is 307cc, which should of course read 307 cui or 5000 cc. This 200 hp motor could be ordered with either two-speed Powerglide or three-speed Turbo Hydramatic transmission.

New features on the ’68 Impala included hidden windscreen wipers, and triple “horseshoe” shaped taillights, I remember the latter making a big impression on me when I first saw them aged about 10 in 1969.

The Impala was still the biggest seller in 1968 of the 710,900 Impala’s sold 24,730 were convertibles.

Thanks for joining me on this “Metric Vs Imperial” edition of “Gettin’ a li’l psycho on tyres” I hope you will join me again for Ferrari Friday tomorrow. Don’t forget to come back now !