Timing Chain Slop Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skillet · 09-30-2005, 07:59 PM

While fixing an oil leak on the timing chain cover, I noticed my timing chain has quite a bit of play. You can easily move it left and right with your finger. Is it normal to have some timing chain play or should you not be able to move it much? Thanks very much for any replies.

cableguy0 · 09-30-2005, 08:03 PM

its worn out. spend the money and buy a good double roller chain and it wont stretch out like that. edelbrock chains are great and not priced bad either

**special-K** · 09-30-2005, 11:19 PM

Or, Cloyes.Don`t let it go.If it jumps,you`ll end up with bent pushrods or,worse yet,bent valves.

cdowns · 09-30-2005, 11:22 PM

yeah what they said /i too vote cloyes

tomatocity · 10-01-2005, 02:05 AM

what they said is VERY IMPORTANT and your truck will run much better.

The way to check for timing chain stretch (normally) is to check the timing of #1 and #6 cylinders. More than 6* difference is not good for normal driving. More than 3* difference is not good for high RPM speeds.

**Stocker** · 10-01-2005, 12:03 PM

What they said

, and you probably already know that the timing chain and the cam gear are replaced as a set...

Bubba4spd · 10-01-2005, 12:20 PM

Good point Stocker, I'd even add go one step further and adjust the valves while my hands are dirty.

Dean23 · 10-01-2005, 12:33 PM

Id replace it as everyone has said. But go with a gear drive instead.....more accurate timing plus very cool sounding......see 2 good reasons to change it

cableguy0 · 10-01-2005, 12:35 PM

though i personally run a gear drive they do alot more harmonics into the crankshaft/valvetrain. a good double roller is fine especailly in a stock motor

**clay68c10** · 10-01-2005, 01:21 PM

You're already in there, replace it. It will be a PITA to do it later.

09-30-2005, 08:03 PM	#2
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	its worn out. spend the money and buy a good double roller chain and it wont stretch out like that. edelbrock chains are great and not priced bad either __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

09-30-2005, 11:19 PM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Or, Cloyes.Don`t let it go.If it jumps,you`ll end up with bent pushrods or,worse yet,bent valves. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

09-30-2005, 11:22 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	yeah what they said /i too vote cloyes __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-01-2005, 02:05 AM	#5
tomatocity Registered User Join Date: Jun 2005 Location: Sacramento CA Posts: 1,255	what they said is VERY IMPORTANT and your truck will run much better. The way to check for timing chain stretch (normally) is to check the timing of #1 and #6 cylinders. More than 6* difference is not good for normal driving. More than 3* difference is not good for high RPM speeds. __________________ Got bored, sold everthing. Got bored, looking for a 1960-66 C-10. Want to build my last truck.

10-01-2005, 12:33 PM	#8
Dean23 68cst_ss490 Join Date: May 2001 Location: edmonton,canada Posts: 1,363	Id replace it as everyone has said. But go with a gear drive instead.....more accurate timing plus very cool sounding......see 2 good reasons to change it __________________ Dean edmonton,canada a winter wonderland 2005 Chevrolet Avalanche LT cold air intake, performance exhaust, Comp cams cam, jba shorty ceramic headers. http://www.cardomain.com/ride/3090973

09-30-2005, 07:59 PM	#1
skillet Registered User Join Date: Sep 2000 Location: denton, tx, usa Posts: 176	Timing Chain Slop Question While fixing an oil leak on the timing chain cover, I noticed my timing chain has quite a bit of play. You can easily move it left and right with your finger. Is it normal to have some timing chain play or should you not be able to move it much? Thanks very much for any replies. __________________ 69 SB GMC LWB Fleetside 350, 09 Pontiac Vibe 2.4 liter

10-01-2005, 12:03 PM	#6
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,728	What they said , and you probably already know that the timing chain and the cam gear are replaced as a set... __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

10-01-2005, 12:20 PM	#7
Bubba4spd Registered User Join Date: Sep 2005 Location: S. Georgia Posts: 254	Good point Stocker, I'd even add go one step further and adjust the valves while my hands are dirty.

10-01-2005, 12:35 PM	#9
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	though i personally run a gear drive they do alot more harmonics into the crankshaft/valvetrain. a good double roller is fine especailly in a stock motor __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

10-01-2005, 01:21 PM	#10
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,991	You're already in there, replace it. It will be a PITA to do it later. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

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