327 Crankshaft Damper - Bolt? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gangforward · 11-04-2002, 09:12 PM

Help! Have a 67 Fleetside with 327 - it threw off the lower pulley, broke the belts, took out the radiator, ruined the harmonic damper on the end of the crankshare.

Have replacement parts, but can't tell if the Damper was a simple press on, or if there is supposed to be a crankshaft damper bolt going into the end of the crankshaft.

Either there is no bolt for this engine, or the bolt was sheared off as well, I can't put a 7/16" fine thread into the end of the crankshaft.

Please... Help! Any suggestions?

I'll post pic's of "The General" soon.... 67, Fleetside, Hugger Orange, 2wd, 327, glide.

Cheers!

gangforward · 11-04-2002, 09:24 PM

Here's a quick pic of "the General" named by my daughter..

Future plans are for a 2"-4" set of drop springs and a new tranny and motor.

mikep · 11-04-2002, 09:29 PM

Ive even seen early 350's that werent drilled and tapped for the bolt. Sometimes 327's were and sometimes they werent. Most times not in the case of 283's and 327's. You can drill and tap for a bolt if it isnt already. Kind of a pain to do while its in the truck but its not that bad.

bigjimzlll · 11-04-2002, 09:32 PM

you can drill the crank, but why? if your doing a tear down..sure go ahead and drill and tap it..but it lasted 35 years with out tapping it...i put a press on back on a 283 I did...no probs

gangforward · 11-04-2002, 09:37 PM

Wow that was quick - posted less than 10 minutes ago!

The motor has 100,000+ miles on it, just want it to last till spring when a new 383 is going in with a turbo 400. Thanks for the info, I'm going to press one on and cross my fingers.

Thanx!

Ackattack · 11-04-2002, 10:44 PM

Yeah, my 327 doesn't have a bolt either. Make it a real PITA to get the balancer back on.

gangforward · 11-04-2002, 10:53 PM

Yeah - That brings me to my next question - how do you get the new balancer on without any way of tightening it down? Don't like the idea of banging on it...

I guess you could heat it up first, but wouldn't that be hard on the seal in the timing cover?

bigjimzlll · 11-04-2002, 11:31 PM

I used a BFH

mikep · 11-05-2002, 12:03 AM

BFH's do much harm to thrust bearings and harmonic balancer rubber rings. Sometimes theres no harm. Sometimes theres enough harm to take 20,000 or more miles off an engine, Sometimes the engine makes it to the end of the street before the balancer disintegrates. Seen it happen.

bigjimzlll · 11-05-2002, 12:27 AM

yea theres probably a better way....the dampner on my 283 was different than a normal dampner...more like solid steel..and your supposed to "set" the thrust bearings anyways...maybe beating it with a BFH isnt the best way though...lol

Ackattack · 11-05-2002, 12:44 AM

I used the BFH method also.

What is the proper way to install a press fit harmonic balancer? I don't think you want to take it to a machine shop every time you change a camshaft or whatever (when you have the balancer off)

11-04-2002, 09:12 PM	#1
gangforward Hootis is as Hootis does... Join Date: Nov 2002 Location: Southern Georgia Posts: 500	327 Crankshaft Damper - Bolt? Help! Have a 67 Fleetside with 327 - it threw off the lower pulley, broke the belts, took out the radiator, ruined the harmonic damper on the end of the crankshare. Have replacement parts, but can't tell if the Damper was a simple press on, or if there is supposed to be a crankshaft damper bolt going into the end of the crankshaft. Either there is no bolt for this engine, or the bolt was sheared off as well, I can't put a 7/16" fine thread into the end of the crankshaft. Please... Help! Any suggestions? I'll post pic's of "The General" soon.... 67, Fleetside, Hugger Orange, 2wd, 327, glide. Cheers!

11-04-2002, 09:29 PM	#3
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	Ive even seen early 350's that werent drilled and tapped for the bolt. Sometimes 327's were and sometimes they werent. Most times not in the case of 283's and 327's. You can drill and tap for a bolt if it isnt already. Kind of a pain to do while its in the truck but its not that bad. __________________ No truck :-(

11-04-2002, 09:32 PM	#4
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	you can drill the crank, but why? if your doing a tear down..sure go ahead and drill and tap it..but it lasted 35 years with out tapping it...i put a press on back on a 283 I did...no probs __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

11-04-2002, 10:44 PM	#6
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,524	Yeah, my 327 doesn't have a bolt either. Make it a real PITA to get the balancer back on. __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

11-04-2002, 11:31 PM	#8
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	I used a BFH __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

11-04-2002, 09:24 PM	#2
gangforward Hootis is as Hootis does... Join Date: Nov 2002 Location: Southern Georgia Posts: 500	Here's a quick pic of "the General" named by my daughter.. Future plans are for a 2"-4" set of drop springs and a new tranny and motor.

11-04-2002, 09:37 PM	#5
gangforward Hootis is as Hootis does... Join Date: Nov 2002 Location: Southern Georgia Posts: 500	Wow that was quick - posted less than 10 minutes ago! The motor has 100,000+ miles on it, just want it to last till spring when a new 383 is going in with a turbo 400. Thanks for the info, I'm going to press one on and cross my fingers. Thanx!

11-04-2002, 10:53 PM	#7
gangforward Hootis is as Hootis does... Join Date: Nov 2002 Location: Southern Georgia Posts: 500	Yeah - That brings me to my next question - how do you get the new balancer on without any way of tightening it down? Don't like the idea of banging on it... I guess you could heat it up first, but wouldn't that be hard on the seal in the timing cover?

11-05-2002, 12:03 AM	#9
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	BFH's do much harm to thrust bearings and harmonic balancer rubber rings. Sometimes theres no harm. Sometimes theres enough harm to take 20,000 or more miles off an engine, Sometimes the engine makes it to the end of the street before the balancer disintegrates. Seen it happen. __________________ No truck :-(

11-05-2002, 12:27 AM	#10
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	yea theres probably a better way....the dampner on my 283 was different than a normal dampner...more like solid steel..and your supposed to "set" the thrust bearings anyways...maybe beating it with a BFH isnt the best way though...lol __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

11-05-2002, 12:44 AM	#11
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,524	I used the BFH method also. What is the proper way to install a press fit harmonic balancer? I don't think you want to take it to a machine shop every time you change a camshaft or whatever (when you have the balancer off) __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index



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