Drilling Crank

[Gearhead99]

Do you guys recomend drilling the end of the crank for a bolt to hold the balancer on??

If so, what size, etc.

I forgot that there isn't a bolt on the low HP Chev engines. They just press on.

[models916]

Got to drill and tap it. I run a SBC damper with a corrected timing tab from ShowCars. They have come a long way on crank harmonic damping in the last 40 years. Poor control over crank harmonics will cost you horsepower.

[tripowerguy]

I bought a bolt and washer for a sbc and drilled and tapped the end of the crank to match. I had a 64 with a sbc in it and the dampener came off and ruined the end of the crank. So I think any of these cars that have 40 year old engines in them need the insurance. Who knows how many times that dampener has been pressed off and on. I'm sure that a little metal comes off each time.:deal Roy

[jwhotrod]

Just a quick note because i just chased the thread in the end of the crank in my '09 and like you said a SBC bolt (7/16"-20 UNF) works great. New kid on the block!

jwhotrod

[tripower]

Got to drill and tap it. I run a SBC damper with a corrected timing tab from ShowCars. They have come a long way on crank harmonic damping in the last 40 years. Poor control over crank harmonics will cost you horsepower.

models what balancer did you use? Dimensions Please...

[models916]

i got the damper and timing tab from showcars. Right on the money with a TDC indicator.

http://cgi.ebay.com/ebaymotors/348-409-CHEVY-CHEVROLET-SBC-6-3-4-BALANCER-DAMPER_W0QQitemZ7940262062QQihZ019QQcategoryZ46098 QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

[dq409]

[QUOTE=models916;75294]i got the damper and timing tab from showcars. Right on the money with a TDC indicator.

[QUOTE]

Models,, do you have stock in ShowCows? :rofl

[cheap1]

[QUOTE=models916;75294]i got the damper and timing tab from showcars. Right on the money with a TDC indicator.

[QUOTE]

Models,, do you have stock in ShowCows? :rofl

:rofl :rofl :rofl :rofl

[Ronnie Russell]

I use the Showcars timing cover tab on the race car and on my car. Both with aftermarket external balance balancers. Timing tape placed on balancer with head off and piston at true TDC. Showcars timing tab is a handy, simple attachment . You guys better leave the sleeping bear alone. models is a mean old fart. :rofl :rofl

[models916]

Never a major problem in 20 years.

[dq409]

Never a major problem in 20 years.

You lucky guy,,,,,:bow

[tripower]

I use the Showcars timing cover tab on the race car and on my car. Both with aftermarket external balance balancers. Timing tape placed on balancer with head off and piston at true TDC. Showcars timing tab is a handy, simple attachment . You guys better leave the sleeping bear alone. models is a mean old fart. :rofl :rofl

Ronnie, Your using external balance balancers on an internally balanced engine...:dunno I don't get it...:dunno Did you use a 454 crankshaft...?

[Ronnie Russell]

Dan, 454 crankshafts make big motors . I like big motors.......:brow :brow

[tripower]

Dan, 454 crankshafts make big motors . I like big motors.......:brow :brow

Ronnie, You made me studder for a minute...:rofl :rofl :rofl