I think the chevy guy lined the keyway straight up instead of about the 2:00 position. Which would put the mark right about where it should be
Never assume someone knows what they’re doing
- Thread starter Sedbld
- Start date
Yes I degreed the stock regrind purple shaft cam when I put it back together and it was definitely several teeth off. It was “rebuilt” back in ‘08 and had never been started. At least that’s what the rods and main bearings were dated
Big bill
Well-Known Member
My 383 was rebuilt in 2023 and I used nos bearings from 1981 so I wouldn’t rely on that just saying.
I learned this lesson can apply to the entire car. Both of my old Mopars had been through various levels of disassembly before I bought them. They (especially my 67) were apparently just thrown together in order to get them running to sell them. Nothing was bolted tight on the 67. It was probably 6 months before I got all the bolts tightened up and upside down rocker shafts changed out. The 66 was bolted together a little better but obviously had been sitting for many years with a partially fried wiring harness, bad instrument voltage regulator, corroded heater core, etc.
RT68440
Well-Known Member
Meh, close enough...lol
Phantomx
Well-Known Member
Yeah, it’s bad. I find that people have no idea how tight things need to be. I have been into jeeping for 25+ years (dirt roads to the Rubicon trail) and it blows my mind how many people have seriously important pieces parts come loose or fall off of their vehicles. I can’t think of a time that I’ve had a part come loose on any of my vehicles.
Travis..
Travis..
I thought this was a classic move. The previous owner installed an AFB four barrel on the 361. He used a late model spread bore manifold and an adapter, not great but workable. When I removed the carb I realized he had the adapter installed upside down. He also used a dropped air cleaner base under the stock air filter lid. It didn't clear the rubber fuel line, so he modified it, sharp edges and all. Thankfully he didn't go any deeper into the engine.
451Mopar
Well-Known Member
I think on many engines, like the old Mopars, the keyway is in-line with the front crank throw. If the keyway is square to the drivers side block deck, then the piston should be at TDC (ideally, but machining tolerances can mess that up.) This just shows the cam degreed off by about 45-degrees 
Similar threads
