2002 Motion Camaro

[matt murphy]

JoeC,
Yes, you are correct regarding the big block vs the smaller version and yes, todays blocks are the same size. As you know, there is a BIG difference between the 427 C5R race cases and a standard LS1. GM sells the Race Case and the internals are not for sale through GM. They are all custom ordered. I like referring to these motors as a modern day big block, and I'm sorry if I confused people here. You are very accurate in your knowledge. Today the C5R race motors are different as well to the street versions, but the race case (bare block) is the same. Was the CanAM race motor the same block as the ZL1 Camaro Motor? and/or was it machined differently? Were the CanAM motors the first 427 motors Chevy built then they made a street (ZL1) version for the '69 Camaros and Corvettes?

I always like comparing the old with today, and the similarities are there but they are very different animals like you said . . .BUT, I still have to believe that these C5R race cases are the modern version of what Chevy is racing with and the ZL1 motor was the choice then and the C5R motors are the choice today. Were the CanAM ZL1 motors used in the 24 hour races at Le Mans and Daytona in 1969 ?? and were there production Corvettes running the ZL1 (RPO) version in Le Mans or the Daytona 24 in 1969 and 1970 ?? If so, that is why I refer to them, as the modern day ZL1 motor. [img]/ubbthreads/images/graemlins/beers.gif[/img]