1975 350 timing set
July 23rd, 2017, 12:48 AM
#1
ph_ckstick1
Thread Starter
Join Date: May 2017
Posts: 450
1975 350 timing set
Hello..
I'm assuming These have the nylon tooth gears timing sets from the factory..
About what mileage are they normally good for.?
Mine is not sloppy but it only takes on tooth to go awol..
I'm assuming These have the nylon tooth gears timing sets from the factory..
About what mileage are they normally good for.?
Mine is not sloppy but it only takes on tooth to go awol..
July 23rd, 2017, 08:25 AM
#7
Out of Line, Everytime😉
Join Date: Dec 2006
Location: Melville, Saskatchewan
Posts: 8,931
I have found the mid 70's nylon timing sets seem to not fall apart like the earlier ones. The motors I pulled them out of were well taken care of and great shape inside. I am betting the nlyon was probably more heat resistant compared to earlier model's, not even a crack in the nylon. Both were 76 350's, so still 40 years old. Still a good idea to change it. A far as cam and lifters, either go with a cam like the smog 455 or vin 9 307 cam, a Lunati high efficiency series cam, or leave it alone. The stock cam sucks, only good for low emissions and maybe fuel economy.
Last edited by olds 307 and 403; July 23rd, 2017 at 08:34 AM.
July 23rd, 2017, 08:48 AM
#9
ph_ckstick1
Thread Starter
Join Date: May 2017
Posts: 450
July 24th, 2017, 11:19 AM
#12
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,361
That may have just been luck. I've thrown the chain on a 1980s 307 with about 120K on it (in my defense, I ASSUMED the mileage was actually 220K, and thus that the chain had already been replaced...). On the other hand, I opened up a 1971 350 with 115K on it to replace the chain, and the plastic teeth looked nearly brand new. Go figure (or else, someone replaced a worn timing set with a new plastic one - but who does that?).
July 24th, 2017, 09:03 PM
#14
Out of Line, Everytime😉
Join Date: Dec 2006
Location: Melville, Saskatchewan
Posts: 8,931
That may have just been luck. I've thrown the chain on a 1980s 307 with about 120K on it (in my defense, I ASSUMED the mileage was actually 220K, and thus that the chain had already been replaced...). On the other hand, I opened up a 1971 350 with 115K on it to replace the chain, and the plastic teeth looked nearly brand new. Go figure (or else, someone replaced a worn timing set with a new plastic one - but who does that?).
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