Quote:
Originally Posted by 68Gold/white
Where’s that orange sunshine guy when you need him?
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Here I am. I had school yesterday. [24 hours of State-required EMT Refresher lectures, then practicals and tests].
Anyway, the ''tell'' is the taller side lifter cover plates.
Also fuel pump is midline, not forward.
Passenger side motor mount is forward.
Above mount also different from Driver side. [230, 250'S are same both sides]
L-25 [292 L6's RPO #] sits taller, so there's less headroom under the arch of the firewall.
SPID may state ''L-25'' and/or ''292 cu in'' in options.
The water pump has more outlets than a 250's.
Whole block is a couple, three inches taller.
Oil pan takes a full 6 quarts.
Heavy duty trucks had 3 studs on the exhaust manifold donut.
Usually WON'T have Power Steering or A/C. Majority of L-25s were in fleet work trucks. No frills.
Dress numbers stamped in block behind distributor mount may end in UH or XAE.
Referred to as ''HD-TD'' by Leo Santucci, author of ''Chevrolet Inline Six Cylinder Power Manual.'' Meaning heavy duty - tall deck. He referred to the 230/250 blocks as ''STD - LD'' for Standard duty - low deck. His reason for the terms was that after boring-out to .030, .040, .060 - over, the stock displacement volume numbers were no longer valid as a type identifier. A .030-over block is now at 296 CuIn, and .060 is a 301.
OP's carb looks like a Rochester Monojet. The 250 Monojet would look identical from the outside. I don't remember much about the single bbl carb. I went Four Barrel over 40 years ago.
Hope this helps...
