He's right, the early 265 Chev V8 had only a bypass filter. Even that may
have been optional, not sure about that...
Jack Halton
51 GMC 1/2 ton
Winter Park FL
----- Original Message -----
From: "Gary Perry" <glperry@fwi.com>
To: "oletrucks" <oletrucks@autox.team.net>
Sent: Monday, October 09, 2000 11:58 AM
Subject: [oletrucks] Fw: Overhead Valve Engines
> I got this off my Y-block list that I just joined. It's about two Guys
> fighting over why F*** didn't have an OH engine sooner. I was wondering
> about the full-flow filter on early Chevy V-8's as not being so as he
states
> in letter. Is this true? Also, when did Lincoln goe to OH valve engines?
> That's a new one on me.
> "G"
> -----Original Message-----
> From: jrmummert@compuserve.com <JRMUMMERT@compuserve.com>
> To: YBlock Mail <yblock@listbot.com>
> Date: Monday, October 09, 2000 11:37 AM
> Subject: Re: Overhead Valve Engines
>
>
> >YBlock Mail - http://yblock.web-page.net
> >
> >Tim, don't let anyone mislead you into thinking that the bowtie stuff was
> >technically advanced. Of course Ford had overheads in 52, the 215 6
> >cylinder and Lincoln ohv's. The scrubs had overhead valves but they also
> >had non pressurized lubrication to the rod bearings until 1953. Ever
heard
> >the term "dipper"? The rods had little scoops on the bottom that picked
up
> >oil from trays in the oil pan. That is why anyone racing a scrub in those
> >days used a GMC 6 cylinder. scrubs in those days were known as "stove
> >bolts" because the pan, valve cover ect. were assembled with stove
> >hardware. Many young guys don't know that the first 2 years of the sbc
> >didn't have a full flow oil filter. They actually designed a new engine
in
> >the 50's with by pass filtering. A small oil line ran oil to a firewall
> >mounted filter them pissed it back into the valley area. The sbc was
> >designed to be cheap to produce, PERIOD. The pressed wrist pins, ball and
> >socket rockers, lack of a positive thrust on the cam and by-pass
filtering
> >were all cost cutting measures. Do you know why they sell cam buttons for
> >sbc's? Because they had the genious idea to grind all the lobes on the
cam
> >to push the cam toward the rear. ( Fords have 1/2 the lobes tapered to
the
> >front, half rear and a thrust plate to poitively control cam thrust).
This
> >in theory would force the cam back so the cam timing gear would ride
> >against the block. To take some load off, the distributor drive gear
forces
> >the cam forward. Here is where the trouble starts. At high rpm with a
high
> >volume pump the force of the distributor gear overcomes the lifter thrust
> >and the cam begins to float front to back which causes the timing to
> >wander, and worse things happen to the timing chain. Incidently, the
> >bowties boys had a V8 in around 1920, it made less power than their 4
> >cylinder and was discontinued. Ask your buddies why their emblem has no
> >writting, similar to the 3 balls for a pawn shop or the striped barber
pole
> >which were used to attract the illiterate. As I like to say " the bowtie
> >boys like their engines cheap and easy, just like their women" John M
> >
> >
> >______________________________________________________________________
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> >
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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