Dan, your oil usage is on the high side, even for valve seals. There are some other factors as well. Valve seals can be replaced without head removal, I've done it many times. It only requires two special tools (cheap) , an air-compressor that can run for 15-20 minutes without shutdown, and standard tools, with 3-4 hrs time. The other areas to check, would be the intake valley pan gasket (sucking oil from the bottom of the intake ports) and a possible over-fill on the oil. To check the oil capacity, fill to full mark, then drain the pan and measure the amount.It should be about 4 qts. The intake is more work, but still less than valve seals and since the gasket is metal, expansion and contraction over many years can compromise the seal. Then move on to valve seals, I just did the seals on my 53k mile 77 440, most of the seals were completly missing, and now in the oil pan. For the proceedure on seals, let me know and I can give details on the operation. Dave.<
/DIV>
-------------- Original message --------------
From: therichardsonfamily@xxxxxxxxxxx
> Hello everyone (& Dave):
>
> I have excessive oil usage on my '67 Imperial engine. Not much of a surprise
> with 150K+, and sitting for a decade. 1 quart/150 miles at 70 mph, & 1
> quart/300 miles at 45ish avg. mph around town. I know the correct answer is to
> do a complete rebuild. Can't quite pop for that right now, as there are too
> many other priorities for my next $3000.
>
> Compression check months ago was OK, no blue smoke at cold start up (even if
> sitting for days), no blue smoke at hard acceleration, or after idle - just no
> blue smoke at all. Idles and drives quite well, gets about 11 mpg. Pulled the
> plugs yesterday after 3000 miles, and they were nicely tanned/greyed, clean
> everywhere
except wet oil on the threads.
>
> Dave had mentioned earlier that big block Mopars have a tendency to need valve
> seals. If that is what's indicated by the above evidence, I could probably find
> the resources to pull the heads.
>
> Any expert (or otherwise) theories and thoughts would be most welcomed.
>
> Dan Richardson
> 300L Family Heirloom
>
>
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