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Chevy 350 light knock

Ha! Ok, found a bolt missing on the transmission mount! 12mm bolt I presume? I'll pick a bolt up tomorrow and give updates
- TrucksNameIsEarl
- Post #6
- May 21, 2020
- Forum: Engine & Performance
Chevy 350 light knock

Thanks for the replies, guys! After driving around a bit and seeing if I could recreate it, it occurs when braking hard. Braking softly doesn't seem to upset the vehicle. I will check out mounting bolts and flex plate!
- TrucksNameIsEarl
- Post #5
- May 21, 2020
- Forum: Engine & Performance
Chevy 350 light knock

Forgot to mention.. I've taken it to a mechanic buddy of mine to make sure drive components and suspension are good to rule out any possible drive-shaft or random suspension tolerance issue, but he seems to think that all checks out
- TrucksNameIsEarl
- Post #2
- May 21, 2020
- Forum: Engine & Performance
Chevy 350 light knock

Got an 85 GMC K1500, 305 from the factory, swapped rebuilt 350 in it currently, it's developed a light knock! On start-up it's not there, after about 10 minutes of driving it's really noticeable (audible and feel it under your feet in the driver's seat) when braking. Now it could be that it's...
- TrucksNameIsEarl
- Thread
- May 21, 2020
- 350 knock squarebody
- Replies: 6
- Forum: Engine & Performance