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ian57tbird
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I have a 427FE reverse crank and the seal marks are the opposite direction.
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John Mummert
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The firing order is different. I guess the pistons, if they have offset pins, would be installed backwards with the mark to the rear. I don't know what was done about knurling on the seal surface.
http://ford-y-block.com 20 miles east of San Diego, 20 miles north of Mexico 
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Y block Billy
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Be it crank or cam running reverse rotation, what does that do to the firing order?
 55 Vicky & customline 58 Rack Dump, 55 F350 yard truck, 57 F100 59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?
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Ted
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John Mummert (8/17/2013) Many of the Interceptor Marine Y-Blocks were reverse rotation. Some apparently were not. You can hope it is a reverse rotation cam since those cams have been obsolete for years. ......John. Correct me if I’m wrong but I thought the camshafts ran in the same direction in both the standard and reverse rotation Y engines. The purpose of the gear drive on the reverse rotation engine was to allow the crankshaft to run in the reverse direction while the camshaft and distributor still ran in the standard direction. . But that brings up a question I have regarding reverse rotation engines. Is the crankshaft special in regards to the oil holes and slash mark directions for the rear main seal?
 Lorena, Texas (South of Waco)
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slick56
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312 Interceptor on YouTube http://www.youtube.com/watch?v=AuhKPyhdqKE
South Australia
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slick56
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There is an Interceptor manual similar to Aussie Bills' on eBay at the moment - no bids, less than 2 days to go... http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=350854421934#vi-content
South Australia
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aussiebill
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aussiebill (8/16/2013)
lump (8/16/2013) I took some close-up photos of the shaft itself last night, to see if I could verify that it is a Y-block cam. But those photos are at home, so I will have to post tonight.
It looks to me like a Y-block cam, since the distributor-drive gear is in the rear and Y-blocks are only old Ford V8's with rear distributors. But does anyone know if all INTERCEPTOR engines were Fords, back in the day?
As for value, I ASSUME that modern grinds would be more efficient and effective than 1950's-60's technology...so I ASSUME that the cam's greatest value would be as a collector's item; destined for a life sitting on a prominent shelf in the shop of a true Y-Block fanatic. Is that right? Nice find! As far as i know the y block Marine interceptor engines in 292 and 312 were made in conjunction with ford or assembled by the EATON Co, same company that did power steering etc, i have the original Eaton workshop manualon them here somewhere. Found it, mainly tec section but interesting.  
AussieBill YYYY Forever Y Block YYYY Down Under, Australia
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John Mummert
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Many of the Interceptor Marine Y-Blocks were reverse rotation. Some apparently were not. You can hope it is a reverse rotation cam since those cams have been obsolete for years. Cams can always be made smaller if someone wants something smaller for their rev. rot. marine engine but a new cam for one would be nearly impossible to find.You can get an idea of the lobe lift with a caliper by measuring across the base circle then rotating the cam and finding peak lift. The difference will be close to the lobe lift.
http://ford-y-block.com 20 miles east of San Diego, 20 miles north of Mexico 
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Y block Billy
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with those valve lashes its definately not a stocker!
 55 Vicky & customline 58 Rack Dump, 55 F350 yard truck, 57 F100 59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?
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MoonShadow
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The counter rotation was accomplished with a gear drive on the cam and, I think, a different grind. I'm not real sure if the cam profile was reversed. Chuck
Y's guys rule! Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.
  MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi) Manchester, New Hampshire
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