[77 Canamman]

Originally Posted by Tom Vaught

Did a basic search on the timing chain issues and some have 100K on their engines with no issues reported. Some other F-150 Forum guys have swapped FEAD parts on their engines as well as "played with things" and they have had timing chain issues on the 2011 to early 2014 engines.

Not saying that the Camshafts are not applying a massive load on the chains.
The Fuel Pump driven by the timing Chains/Camshaft applies a load on the timing chains.
And a lot of the engines repaired were high mileage engines.

Seems to me that I was replacing a LOT of TIMING CHAINS and Nylon Upper Timing Gears and a metal lower gear on Firebirds, Tempests, Lemans, and GTOs, and Big Cars because they had engineering problems with Timing Chains and gears in the late 60s and early 70s.

So the Pontiac Boys better read up on their history before they throw rocks about suspect engineering. The EFI pump, especially when played with by a tuner, exerts a massive load on the timing chains and gears of the Ecoboost engines.

Tom V.

Ray Charles could see that the GM Nylon cam gear/chains were garbage. They affected all divisions back then, not just Pontiac. They were an engineering disaster. The take away is pure planned obsolescence.

The EB stretched chains I referred to were in the earlier pre 2014 F150'S, ALL with under 30k miles. No mods OR tunes on any of them either.