Quote:

Thanks.. I'll check my mag. Don. I guess Scottys CNC'd SR's have 84cc chambers. Trying to science it out for 11:1 with a .030 over 400 block.

I'd like to see 350+ at about .650 or so with maybe 270 at the .400 number.



here are the numbers straight out of Indy's catalog:

.400 = 265
.600 = 337
.700 = 362

These numbers are for Indy's 'full porting and polish.'

combustion chamber is 75cc, can be milled down to 62cc. I doubt you would want to mill them that far though, 65cc is a more realistic limit.

My car ran deep into the 9's with ported SR's and roller 440. I sold them to Nick (65belved). He is putting them on a 511" for his car. He should have a real nice running piece soon. (Sorry Nick if I gave away any secrets)

[image]http://s1126.photobucket.com/user/nhramark1/library/Racing[/image] 9.100 @ 150 mph 5.780 @ 120 mph