distributor question- not timing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigd65 · 01-04-2003, 04:06 PM

where can i find the distributer gear shims. i checked O'REILEYs and AUTOZONE and got the same look from the HIGH SCHOOL KIDS that work there

so i went to NAPA and guess what , they had a HIGH SCHOOL girl working there and the same look

"wait a minute let me go ask" she says. well they dont have it eather. i checked my SUMMIT and my JEGS (both are my bibles) and i couldnt find them. any one have any ideas

79BIG10 · 01-04-2003, 05:55 PM

Jeff how about these?? Summit's Jeg's

87 STEPPER · 01-05-2003, 04:00 AM

Jeff,

If i were you i'd get the yellow pg's out and call some local speed shop's and see if they have them!

I ck the link's 79big10 put up but summit shows they have them but they are listed as temp. unavailable Huh

And Jegs shows they carry them but they list for 4.95$ + s&h that means your gonna pay like 10 bux for some shim's.

Think about it bro that's insane

bigd65 · 01-05-2003, 10:19 AM

yea i found them in JEGS, i am going to order some but i am also going to order a timing tape, so i can finally get my timig advance numbers.

pkbinplano · 01-05-2003, 10:48 AM

If they are just shims get some shim stock and make them. Shim stock comes in a variety of thickness. If you need them asap or as a temp fix till you get replacements.

J-Spec C10 · 01-06-2003, 12:42 AM

Ok, so I gotta ask, what the heck do you need to shim the distributor for? I've never heard of this practice. Is there a significant benifit to doing it? Obviously its important if summit see's a need to stock them.

1976K5CHALET · 01-06-2003, 01:02 AM

I believe the spec from GM is 30k.....you can buy the shims from GM. Make sure you check the side play between the shaft and the housing.....the housing usually looses with age.

Azblazer

87 STEPPER · 01-06-2003, 01:30 AM

Quote:

Originally posted by J-Spec C10
Ok, so I gotta ask, what the heck do you need to shim the distributor for? I've never heard of this practice. Is there a significant benifit to doing it? Obviously its important if summit see's a need to stock them.

Shims are used to locate the distributor drive gear as near to center in the cam's gear to reduce wear on the gears and prevent binding of the gears most stock engines dont need them and the only time you may need to use them is after a manifold or cam change.

1976K5CHALET · 01-06-2003, 02:06 AM

I'll agree on the first half of that comment...but the second...haven't pulled a large cap or small cap HEI yet without it having shims on it....i'll check the manual on the 30K....the 30K is for the first half of your post.

Azblazer

J-Spec C10 · 01-06-2003, 03:36 AM

How do you check to see if you need to use shims? Would you need them if the engine has high mileage to compensate for wear? If I replace my cam in a 305, would I need to shim it?

bigd65 · 01-06-2003, 08:23 PM

well the reason i am shimming mine is because the center plate on my distributor lifts about 1/8 -1/4 after the advance weights are maxed in turn giving me waaaay to much advance at WOT

J-Spec C10 · 01-06-2003, 09:58 PM

I think I get it. I guess if my advance is way out at wot I'll know where to start.

01-04-2003, 04:06 PM	#1
bigd65 Registered User Join Date: Mar 2000 Location: Clute, TX. Posts: 1,935	distributor question- not timing where can i find the distributer gear shims. i checked O'REILEYs and AUTOZONE and got the same look from the HIGH SCHOOL KIDS that work there so i went to NAPA and guess what , they had a HIGH SCHOOL girl working there and the same look "wait a minute let me go ask" she says. well they dont have it eather. i checked my SUMMIT and my JEGS (both are my bibles) and i couldnt find them. any one have any ideas __________________ 2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe

01-04-2003, 05:55 PM	#2
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Jeff how about these?? Summit's Jeg's __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

01-05-2003, 04:00 AM	#3
87 STEPPER STILL PLAYS WITH TRUX Join Date: Nov 2002 Location: Melbourne, Fla. Posts: 2,764	Jeff, If i were you i'd get the yellow pg's out and call some local speed shop's and see if they have them! I ck the link's 79big10 put up but summit shows they have them but they are listed as temp. unavailable Huh And Jegs shows they carry them but they list for 4.95$ + s&h that means your gonna pay like 10 bux for some shim's. Think about it bro that's insane __________________ ~~Bruce~~ MY 87 STEPPER MY 99 2D/WD TAHOE

01-05-2003, 10:19 AM	#4
bigd65 Registered User Join Date: Mar 2000 Location: Clute, TX. Posts: 1,935	yea i found them in JEGS, i am going to order some but i am also going to order a timing tape, so i can finally get my timig advance numbers. __________________ 2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe

01-05-2003, 10:48 AM	#5
pkbinplano pkbinplano Join Date: Nov 2002 Location: Plano Texas Posts: 370	If they are just shims get some shim stock and make them. Shim stock comes in a variety of thickness. If you need them asap or as a temp fix till you get replacements. __________________ http://www.picturetrail.com/gallery/...7496&members=1 84 chevy silverado aka The Bananna Boat

01-06-2003, 12:42 AM	#6
J-Spec C10 Whats this wire for?.... Join Date: Dec 2002 Location: Barrie, Ontario, CANADA Posts: 378	Ok, so I gotta ask, what the heck do you need to shim the distributor for? I've never heard of this practice. Is there a significant benifit to doing it? Obviously its important if summit see's a need to stock them. __________________ Kyle CANADIAN CONNECTION '82 C10 Resto-Custom--> * 2 1/4" manifold back dual exhaust with Hooker Aerochambers & High Flow Cats Taylor Ignition Wires Centerline 15" Telstars with 32"x10" mudders

01-06-2003, 01:02 AM	#7
1976K5CHALET Senior Member Join Date: Jan 2003 Location: Grand Junction, Colorado Posts: 610	I believe the spec from GM is 30k.....you can buy the shims from GM. Make sure you check the side play between the shaft and the housing.....the housing usually looses with age. Azblazer

01-06-2003, 02:06 AM	#9
1976K5CHALET Senior Member Join Date: Jan 2003 Location: Grand Junction, Colorado Posts: 610	I'll agree on the first half of that comment...but the second...haven't pulled a large cap or small cap HEI yet without it having shims on it....i'll check the manual on the 30K....the 30K is for the first half of your post. Azblazer

01-06-2003, 03:36 AM	#10
J-Spec C10 Whats this wire for?.... Join Date: Dec 2002 Location: Barrie, Ontario, CANADA Posts: 378	How do you check to see if you need to use shims? Would you need them if the engine has high mileage to compensate for wear? If I replace my cam in a 305, would I need to shim it? __________________ Kyle CANADIAN CONNECTION '82 C10 Resto-Custom--> * 2 1/4" manifold back dual exhaust with Hooker Aerochambers & High Flow Cats Taylor Ignition Wires Centerline 15" Telstars with 32"x10" mudders

01-06-2003, 08:23 PM	#11
bigd65 Registered User Join Date: Mar 2000 Location: Clute, TX. Posts: 1,935	well the reason i am shimming mine is because the center plate on my distributor lifts about 1/8 -1/4 after the advance weights are maxed in turn giving me waaaay to much advance at WOT __________________ 2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe

01-06-2003, 09:58 PM	#12
J-Spec C10 Whats this wire for?.... Join Date: Dec 2002 Location: Barrie, Ontario, CANADA Posts: 378	I think I get it. I guess if my advance is way out at wot I'll know where to start. __________________ Kyle CANADIAN CONNECTION '82 C10 Resto-Custom--> * 2 1/4" manifold back dual exhaust with Hooker Aerochambers & High Flow Cats Taylor Ignition Wires Centerline 15" Telstars with 32"x10" mudders

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