ok do i have to worry......

i built my 327 after sending it to the machine ship. and the crankshaft it NOT drilled and tapped for a bolt. people have said that there is nothing holding the vib damper in place. i say it is pressed on and should not move. what is the correct answer and or fix for this problem? thanks

 

I have run into a lot of the earlier SBC's without the crank being drilled. To be on the safe side, I would drill and tap accordingly.

 

The factory press on dampers are fine. If you make sure evertyhing is correct when you install it you will be fine. YES, they can come off, but usually the ones that come off were not installed correctly or they were not checked for fit before installation and the fit was loose etc.. You can drill and tap the crank if you want. You can check the crank snout, check the inside of the damper, and then if you are a little leary, you could use loctie brand bearing/stud retainer and press it on. I've done many many press on dampers over the years...not a problem in my book.

 

Just drill and tap it, not a big deal.

 

Drill and tap it...no big deal, and very cheap & easy insurance. I have had one work loose...in my daily driver 65 Chevelle in highschool.
sam

 

BRADY...say it isn't so, a G.M. crank without threads in it. now do you understand why those basWHAT? went belly up! that's the kind of thinking that sunk the ***anic. listen i stoped careing about ford, g.m., and chrysler built over 14 factories in mexico, and g.m. built 2 in china. where's my bailout...POP.

 

Random post award winner for January.

 

Holeshot.....WTF does a bailout have to do with anything? And it's actually early cranks which lack the hole, made right here in the U-S-A during the automakers heyday.

Personally, anything that's gonna see performance use should get the hole. Cheap insurance. Take it from a guy who's replaced a crank 1500 miles after rebuild because balancer slip went undetected and made the keyway an inch wide. Lesson learned.