Gear drive vs Timing Chain

my opinion for what its worth replace oil pan gasket with felpro piece about $40 and both front and rear seals on tranny(for piece of mind) The fel pro one i used on an engine and loved it. no gasket sealer no worry of leaks at the corners. comes with new bolts and 4 screw in pins on the 4 corners to hold the pan on and aligned till all side bolts in then unscrew and put in corner bolts

I'm sorry I don't have much to add to the conversation, but my stock timing chain broke on the 350 in my 73 Monte 20 years ago, causing me to have to do a complete rebuild. That sucked.

I realize now that there are good quality dual roller chains available, and people swear by them, so I guess they are OK. I don't know what I'd use in my next build, but the 454 in my white 73 Monte has a Pete Jackson gear drive and I don't think it's all that noisy. Yep, you can hear it alright, but it's not distracting. I for one think that a gear drive is basically unbreakable, so that gives me peace of mind.

Ive never seen a stock timing chain broke but have seen lots of the gears worn out and those stupid nylon timing gears stripped.

x2 black nothing worse then not finding all the nylon part till you see oil pickup screen

Nylon? Why would anybody use a nylon gear? On purpose??? Doesn't sound too durable to me. Hmmmm.....

It was what they used from the factory. I just helped my dad tear apart a 327 a couple of months ago & the Nylon gear was still in good shape even though the chain showed stretching.

Ive got a collection of them, My dads 302 in his 69 camaro has nylon gear originally in it and it blew up.
One weird thing I noticed the other day, We ordered a Cloyes True Roller with thrust bearing and the cam gear has the GM logo and GM part number on it, the crank gear was billet steel with 3 key ways

i think they have a gm part number because they use them in soe gmpp engines

My nylon gear in my 351W dumped at 99,000 miles. I caught it just in time to stop any other damage, I was lucky. JB