dtpmike

Do you change it at all.. if so, when? Or just wait until it breaks?

I thought I have heard 60k miles... and I have also heard that you do not need to change it unless it breaks or slips a tooth.

big_how

I'm not sure about timing chains, but I think you're getting your 60K figure from timing BELTS found on smaller engines. Sorry I couldn't be more help.

93-383

I just changed mine when I did the full rebuild @95k I only changed it since I had the engine striped down anyway the old gears had little to no visible wear on them.

moore299

140,000 miles and running strong.......

runner140*

128000 on the origional.

Pete K

They usually go 100k or much, much longer. I would not change it unless you are in there anyway doing another project(cam swap, leaky timing cover etc)

onedef92

I've got 120,000 on mine and I'll swap mine out once my Opti goes ****-up.

jeffyc

There are a lot of sbc out there with hundreds of thousands of miles on them with the original timing chain.

JD'S WHITE 93

[QUOTE=big_how;1559934501]I'm not sure about timing chains, but I think you're getting your 60K figure from timing BELTS found on smaller engines.

Z06_BluByU

I only change mine when I do a major engine overhaul or modification (such as a cam swap). I agree with PEte K - only do it if your already going to have the timing cover removed for something..

176,000 miles... and counting (replaced timing set @ 134k - when the LT1 got stroked to 383 cid)

Shawn93PoloConv

178,000 miles and going strong. I suppose I'll do it once I rebuild it, but I have no plans right now.

Quasar21

I give all of you guys credit! You're driving these cars! I bought my 92 in January and it only has 40K on it. I've spent most of the time I've owned it replacing stuff that has gone bad from the car sitting in a garage. Once I've got confidence that I've dealt with everything I'll try to catch up with you guys.

Beside,,,, I think I made this up, but you're all welcome to use it.....

TIME SPENT IN A CORVETTE IS NOT DEDUCTED FROM YOUR TIME ON EARTH.

ps374

84 with 146K on orginal and runs strong.

rocco16

I am most in agreement with this answer.

I had a SBC in my old van and it had 190,000 on the original engine.
Timing chains and sprockets may wear, but they rarely break and they virtually don't jump teeth.

You'll have a VERY tired engine before the timing chain needs replacing.


Larry
code5coupe

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