Re: 1951-54 288 engine
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Forum Ambassador
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The 288 engine was never factory-equipped with a 4-bbl carburetor. But to my way of thinking the increase from 135 to 150 hp could be accounted for by the increase in compression ratio from 7.0 to 7.7 - that's a pretty hefty increase and there were no other significant changes to the 288 that I recall. Also note the 135 hp was developed at 3600 rpm in 1951, the 150 hp in 1954 was developed at 4000 rpm.
Posted on: 2015/10/8 13:57
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Re: 1951-54 288 engine
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Home away from home
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I wonder if the head could be planed for 7.7 or not? Or was the combustion chamber a different shape on the newer 288?
Posted on: 2015/10/8 15:26
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Re: 1951-54 288 engine
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Forum Ambassador
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Dunno. But if the 51 and 54 heads had the same casting number (which I don't know to be so or not) then I think you could assume it could be planed to some degree (not knowing what planning might have already been done). You could also put modeling clay or putty on the highest point of each valve, fasten the head down and rotate the crank a few turns, pull the head and then measure how much clearance you have over the valves. That would let you determine how much more you could remove from the head. But if you go to far it's a canoe anchor.
Talk to Ross, he knows better than anyone else I know of how to get the best boost in performance on the 288. IIRC his little speedster has a hopped up 288 in it.
Posted on: 2015/10/8 15:41
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Re: 1951-54 288 engine
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Home away from home
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That 288 looks very nice! It would appeal to a hot-rodder and is an alternate way of preserving at least a 288 plus (- from the look of it -) a Packard frame (chassis). Original generator / starter / carby etc used as well.
Looks like a simple sports car body has been built on what is principally Packard engine and running gear. Very neat idea and when you think of all the '51 to '54 wrecks out there half-rusted away, and with bodies in un-restorable condition, it presents an opportunity for some enterprising person to draw up a set of blueprints for a simple body "kit" to convert the remains into something like this.
Posted on: 2015/10/8 18:33
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1951 Packard Club Sedan | [url=ht
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Re: 1951-54 288 engine
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Forum Ambassador
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Posted on: 2015/10/8 18:44
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Mal
/o[]o\ ==== Bowral, Southern Highlands of NSW, Australia "Out of chaos comes order" - Nietzsche. 1938 Eight Touring Sedan - SOLD 1941 One-Twenty Club Coupe - SOLD 1948 Super Eight Limo, chassis RHD - SOLD 1950 Eight Touring Sedan - SOLD What's this? Put your Packard in the Packard Vehicle Registry! Here's how! Any questions - PM or email me at ozstatman@gmail.com |
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Re: 1951-54 288 engine
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Home away from home
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That is pretty neat, and he isn't so far from me here in PA...... John
Posted on: 2015/10/8 21:57
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Re: 1951-54 288 engine
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Home away from home
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Well . . . I never realised! Built by Ross, and what a great result.
Thanks Mal for the link . . . I had not seen it before. I have an old but rusty full chassis and quite a lot of spares . . . . I wonder if . . . . . .
Posted on: 2015/10/8 23:23
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1951 Packard Club Sedan | [url=ht
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Re: 1951-54 288 engine
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Home away from home
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I have put a 4 bbl setup on a 288 in the past and will not be in a rush to do it again. Two things: the larger intake runners had a tendency to make the engine bog at lower rpm.
Second, for all normal back road driving, the 2 bbl has a quicker tip in than the 4 bbl jobs and actually feels peppier most of the time. The 4 bbl begins to help at rpms that I seldom reach unless I am demonstrating to some mouth breathing troglodyte that a 288 will easily run up to 50 in second gear. For a nice peppy 288 just do a standard port and relieve job, and find the latest 288 head that you can get your hands on. Skip trying for major compression increases as they make flatheads fussy and unpleasant in normal driving. One ends up with the timing so retarded to prevent knocking that any performance gain is lost. And carefully set the camshaft timing, using a stepped drive key if necessary to achieve the cam timing specified for the other 54 engines. Mmm mmm good.
Posted on: 2015/10/9 16:47
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Re: 1951-54 288 engine
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Home away from home
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Ross, I assume you made the floor shift for the Ultramatic yourself?
John
Posted on: 2015/10/11 12:02
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