My engine book does not give a block bore size for the light press fit block, serial number 71777 and below. For the heavy press fit sleeves, block serial number 71778 and above, the bore size for standard sleeves is 3.8123 - 3.8137. For .002 sleeves the bore size is 3.8143 - 3.8157. For .010 oversize sleeves the bore size is 3.8223 - 3.8237.
Light press fit sleeves need 25 to 75 lbs pressure to install, closer to the 75 is better. Pressures above 75 lbs is allowable for the last inch. Sleeve height above block is obtained by using shims. Height should be .001 - .004 with sleeve clamped down. Try to get no more than .002 between two adjacent sleeves.
Proper fit for heavy press fit sleeves is obtained by requiring no less than 750 lbs for at least five inches of travel. Pressures in excess of 2500 will require honing of the block to get proper fit. Sleeve height above block is .035 - .045. The sleeve installation tool will install the sleeve to the proper height.
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Today's Featured Article - Talk of the Town: Winterizing Engines - To Drain or Not to Drain? - by Russ Berry. What is this strange attraction I have to equipment and machinery? How did I get this way? I came from the suburbs and own a small horse farm in rural Loudoun County, Virginia. You can call me a "weekend farmer." The local farmers do. Does it bother me? No. I am just happy to have their friendship. At least the word "farmer" is in my title. But what is the attraction? How can I explain the sensation and exhilaration I feel when I turn the key and hear the engine come to life (most
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