notes about SBC 327 crankshaft, or if I had it to do over

Dragsinger · 05-05-2015, 04:56 PM

Racers, after spending time with the Super 10 engine research I decided to build a 300/327 engine combo. I think that decision is good and fits well with the Super -10 GT super stock class.

I decided on a Dart SHP Pro block, again, I think a good decision.

About the crankshaft, after considerable searching I found a suitable 327 factory shaft then sent it to Mile High for full work over. Again, very happy with the work and pricing from Mile High.

The problem, main bearings. A few years ago a special thick bearing was on the market that adapted a 327 main to a 350 main [the Dart block is of course 350 main] The thick bearing can no longer be found.

After more searching I did find spacer bearings but I did not like the fit. So, align hone the spacer bearings in the block to get the bore true.

It is assembled with those honed to fit spacers and all is OK.

Knowing what I know now, a new shaft with 350 mains and 327 small pins would have been a better choice and given more bearing selection options.

So, maybe my experience might help another race who is considering a 327 build.

05-05-2015, 04:56 PM	#1
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	notes about SBC 327 crankshaft, or if I had it to do over Racers, after spending time with the Super 10 engine research I decided to build a 300/327 engine combo. I think that decision is good and fits well with the Super -10 GT super stock class. I decided on a Dart SHP Pro block, again, I think a good decision. About the crankshaft, after considerable searching I found a suitable 327 factory shaft then sent it to Mile High for full work over. Again, very happy with the work and pricing from Mile High. The problem, main bearings. A few years ago a special thick bearing was on the market that adapted a 327 main to a 350 main [the Dart block is of course 350 main] The thick bearing can no longer be found. After more searching I did find spacer bearings but I did not like the fit. So, align hone the spacer bearings in the block to get the bore true. It is assembled with those honed to fit spacers and all is OK. Knowing what I know now, a new shaft with 350 mains and 327 small pins would have been a better choice and given more bearing selection options. So, maybe my experience might help another race who is considering a 327 build. __________________ Larry Woodfin 471W