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| Hydraulic to Solid https://slantsix.org/forum/viewtopic.php?t=40019 |
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| Author: | Charrlie_S [ Mon May 03, 2010 9:29 am ] |
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OK, this is interesting. Chrysler part numbers. 1978 #1 bearing 3832601 #2 bearing 1821772 #3 bearing 2121726 #4 bearing 2121727 1979, 1980, and 1981 #1 bearing 4100754 #2 bearing 4100755 #3 bearing 4100756 #4 bearing 2121727 Notice number 1, 2, 3, changed in 1979 before the hydraulic cams, While the #4 bearing (the one, every one was concerned about) never changed. |
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| Author: | Reed [ Mon May 03, 2010 10:09 am ] |
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Thanks Charlie! I stand corrected. |
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| Author: | SlantSixDan [ Mon May 03, 2010 10:29 am ] |
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Quote: OK, this is interesting. Chrysler part numbers changed in 1979 before the hydraulic cams, While the #4 bearing (the one, every one was concerned about) never changed.
This puzzle isn't going to be conclusively solved just based on parts catalogues. Keep in mind that Chrysler part numbers often change despite there being no fit or function change to the part. Examples abound; a 2098 300 voltage regulator is identical in every respect to a 3000 074. A 2875 560 starter is identical in every respect to a 3656 650.
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| Author: | Charrlie_S [ Mon May 03, 2010 3:21 pm ] |
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But there is no part number change, except for the front three bearings, between 1978, and 1979, and the bearings did change. The only difference I can see between the "early" bearings and the "late" bearings, is the #1,2,3 late bearings are shorter. I am thinking there might have been metal taken out of the block, in that area. |
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| Author: | SlantSixDan [ Mon May 03, 2010 4:09 pm ] |
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Aaaaah, okeh, gotchya. I must not have read carefully enough. |
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| Author: | Dolmetsch [ Tue May 04, 2010 5:35 am ] |
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Not that anyone would care but i have been running a hydraulic set up in my Dragster which is a 1962 block for several years now. Works fine. Current grind is .545 lift 241/246 @ 050" hydraulic . Pulls to about 6300. (my shift point. ) before this I had a street cam, hyd as well .430 lift @ 224 Don |
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| Author: | WagonsRcool [ Sun Jan 01, 2012 7:12 pm ] |
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@ Dolmetsch, got a question for you- where did you get your hyd. lifters? The last street slant I put together ran a pretty stiff Hughes cam (about .510" lift, aggressive lift but short duration- springs were about 280-300lbs over the nose). It ran great, except if it sat more than a day, one or two lifters would bleed down, & once you had lots of clearance, it was difficult to get them to pump up again. At the time my source was Napa parts -not high quality & those lifters had to have been on the shelf for 10+yrs. (Chrysler dealer said- obsolete, look somewhere else.) |
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| Author: | Charrlie_S [ Mon Jan 02, 2012 4:05 am ] |
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Look on e-bay for the hydro lifters. I see them quite often, and not very expensive. Here you go e-bay number 260389162626 |
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