Zano,
I have figured every possible configuration of engine dimensions I can figure for a flat top piston 632 cu in with 118 cc cylinder heads, and I just can not come up with the compression you have been told that you have. This is assuming that the heads are at 118cc and the chambers have not been opened up. If they have been opened up the compression would be even less.
I still say that cam is absolutely assanine for driving on the street. It will do tons of help for letting you drive with a high compression engine on the street, but I don't think that you have the compression ratio you were told.
Comp is wrong about it idling but I think it will be very sluggish if your tires are hooked up at all low and mid rpm ranges. In my opinion, about what horsepower yoour engine builder is claiming with it, WHO CARES. How much usable torque and horsepower will it have in the rpm ranges where you will be mostly using it. IF it made the horsepower on his dyno he told you, which to me is doubtful using the Edlebrock heads with a lower compression engine, BUT if it did, Are you going to be driving it all the time at maximum horsepower rpm? Didn't think so.
I do not trash talk other engine builders and we all do things differently, but if he was fully understanding that you will be driving this on the street and wanted to use pump gas, he is an idiot. Man that is more cam than most race cars only run. That is more cam than all except the more elite race cars ran years ago. I see a much bigger negative issue with your cam selection than I do your reported compression ratio, which I highly doubt.
The comparison between what you possibly have and a SS street engine using BMF heads is a far different world. I am certain that SS Racing could have put more compression into it but did not bcuase they have no idea about how it would be used and abused by buyers.
I have always had engines with higher compression than most in my street cars before I went to stock junk cars. I do have customers that are driving 11-00 compression SB ' s with cast heads, So it can be done. I have a customer in KC that uses his 11.30 - comprseeion car all the time but it does have EFI so that helps him a lot. It only gets race gas when he is getting ready to race it.
Willys! ?
That is some good news added in here for you. I love all of the old Willys of any year. Most of those are built fairly light too, so the good news parts of this are that with a lighter car you can get away with more compression on the street. With a lighter car you can also get away with a bigger camshat on the street. Just not that big.
Is there any chance you could post pics of your car? Or a link to a pic storage album, or email me pics. I do love those cars.
Ed