timing chain?

GhettoPop · 10-10-2003, 10:34 PM

Does timing chain require replacement after a certain amount of miles?

billheis · 10-10-2003, 11:05 PM

Yes. Fortunately LX & GT 5.0 uses metal gears for cam and crank (older 302s used aluminum cam gear with nylon covering, it made it quiet but would self destruck at 100K) but the chain still streches. If youre planning on changing cam You definately need to change it, but if not you can sometimes get by wth 200K on them. A simple check to do is pull the distrib. cap and watch the rotor as you turn the crank (15/16 bolt in the middle on pullies) and turn clockwise and then turn counterclock wise and watch how long it takes for the rotor to start tomove again. There will be a small delay but if if you back it up more than 1/8 turn then your chain has a lot of slop in it.

Coupe50h · 10-11-2003, 02:00 PM

When i swapped my ported heads and put in the cam, i was on a budget, and just got the chain from the dealer, still use the factory sprockets, everything's been fine so far.

GhettoPop · 10-31-2003, 03:05 PM

any other opinions on timing chain replacment? how long they last, etc.

LX5liter · 11-02-2003, 12:23 PM

Timing chain and gears are cheap insurance. If they have over 15,000 on them I wouldn't even consider re-using a set. They should last close to 100,000+ miles though.

Ieatcamaros · 11-02-2003, 08:56 PM

Cheap insurance!!! The three piece set (cloyles) is like $20 at Autozone.

10-10-2003, 10:34 PM	#1
GhettoPop Gimme a Drink! Join Date: Dec 2002 Location: NYC Posts: 694	timing chain? Does timing chain require replacement after a certain amount of miles? __________________ 1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong!

10-10-2003, 11:05 PM	#2
billheis Registered Member Join Date: May 2001 Location: Fernandina Beach, FL 32034 Posts: 178	Yes. Fortunately LX & GT 5.0 uses metal gears for cam and crank (older 302s used aluminum cam gear with nylon covering, it made it quiet but would self destruck at 100K) but the chain still streches. If youre planning on changing cam You definately need to change it, but if not you can sometimes get by wth 200K on them. A simple check to do is pull the distrib. cap and watch the rotor as you turn the crank (15/16 bolt in the middle on pullies) and turn clockwise and then turn counterclock wise and watch how long it takes for the rotor to start tomove again. There will be a small delay but if if you back it up more than 1/8 turn then your chain has a lot of slop in it. __________________ Bill Heiser 90 Convertable 5.0 LX, ported E7s w/ THumper valve job, TFS street, FR 65mm TB, B cam w/1.7 cobra rockers, kirban AFPR, Mac CAI, Mac Headers, off road h, 3 chamber flows, Crane ign. box, 3:73s, Art Carr AOD & 2600 converter

10-11-2003, 02:00 PM	#3
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	When i swapped my ported heads and put in the cam, i was on a budget, and just got the chain from the dealer, still use the factory sprockets, everything's been fine so far. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

10-31-2003, 03:05 PM	#4
GhettoPop Gimme a Drink! Join Date: Dec 2002 Location: NYC Posts: 694	any other opinions on timing chain replacment? how long they last, etc. __________________ 1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong!

11-02-2003, 12:23 PM	#5
LX5liter dude5l Join Date: May 2001 Location: Grande Prairie, Alberta, Canada Posts: 603	Timing chain and gears are cheap insurance. If they have over 15,000 on them I wouldn't even consider re-using a set. They should last close to 100,000+ miles though. __________________ Good luck! Brad R. 1992 L.X. 5.0 coupe MODS: A few little bolt ons New Best time ...11.60 @ 128 mph @ 2000+ ft altitude. Rice Haters Club member #39 Users rides #2542

11-02-2003, 08:56 PM	#6
Ieatcamaros Domestic Rice really sucks! Join Date: Apr 2002 Location: KY Posts: 973	Cheap insurance!!! The three piece set (cloyles) is like $20 at Autozone. __________________ The sig says it all.

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