Alright, the Duke in my 85 2m4 coupe is sitting right at 205K original miles, and I'm starting to think it's minor-overhaul time. It doesn't smoke at all, I've replaced most of the sensors, so now I'm leaning toward general mechanical stuff. I'm shying away from a new fiber camshaft gear set, and I can't find any parts stores (Advance, Pep Boys, or O'Reilleys) that can source the alloy or steel timing sets or individual gears. It looks like I'm heading toward the Fierostore's alloy set, but I've come across a Cloyes steel "straight-cut" set for "Pontiac 151 race engines." I'm wondering if this would be a reliable set-up in lieu of the alloy set for a daily driver, if they're notably stronger than the alloy set, or if the only caveat might be a "whine" sometimes associated with the big 350 gear-drives. Thanks in advance!
May 9th, 2008
Posts: 383 From: O.C. , California Registered: Feb 2007
Most parts stores should give you the option of Steel / Alloy timing gear set. Since the Fiero had the Fiber gear, that is what the parts books will show for a Fiero 2.5L . Try looking at the timing gear set for a 1964 Chevrolet Nova 2.5L.
Posts: 4007 From: West Bloomfield, MI Registered: Feb 2002
There is also a strait cut set available in the rock auto website. Overkill for a stock rebuild IMO. The fibre gears last for a long time. I have had several duke engines with 250,000-400,00 km that still had decent gears on the timing set. Only one engine had a fibre tooth failure. It was in the 400,000 km range.