Jroc Posted July 5, 2020 Share Posted July 5, 2020 I’m looking for the engine info for my 89 RD688. The number on top of the timing cover is 8P1393. I have tried and tired to figure out what this mean with no luck. Any help would be appreciated! Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/ Share on other sites More sharing options...
41chevy Posted July 5, 2020 Share Posted July 5, 2020 Should be an E7-350 or an E7-400. Paul Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454929 Share on other sites More sharing options...
storkmack Posted July 5, 2020 Share Posted July 5, 2020 How about a pic? Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454959 Share on other sites More sharing options...
Jroc Posted July 5, 2020 Author Share Posted July 5, 2020 Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454965 Share on other sites More sharing options...
storkmack Posted July 5, 2020 Share Posted July 5, 2020 E6. Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454973 Share on other sites More sharing options...
Jroc Posted July 5, 2020 Author Share Posted July 5, 2020 38 minutes ago, storkmack said: E6. How can you tell? Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454978 Share on other sites More sharing options...
fjh Posted July 5, 2020 Share Posted July 5, 2020 (edited) e 6 it has side covers behind the fuel pump there is a tag on the rear valve cover Edited July 5, 2020 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454982 Share on other sites More sharing options...
Jroc Posted July 5, 2020 Author Share Posted July 5, 2020 What would the horsepower be? Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454983 Share on other sites More sharing options...
fjh Posted July 5, 2020 Share Posted July 5, 2020 (edited) possibly ! have a look It could be anything from 275 to 350 what trans does it have? If it has a 12 speed behind it ! will likely be a 350 ! if it has a 8 or 9 0r six speed it may be a 285M 300 M ! Edited July 5, 2020 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454984 Share on other sites More sharing options...
storkmack Posted July 5, 2020 Share Posted July 5, 2020 22 minutes ago, Jroc said: How can you tell? Pretty much what FJH said. Few years ago I bought a sight unseen 82’ R model that the seller stated that he had an E7 installed into it and new frame rails 5 years prior. Get there to pick it up with the lowboy and low and behold it was not E7 but an old 2 valve motor. That’s when the renegotiating started. The cab was shot and I was essentially buying it for the frame and the engine. Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454988 Share on other sites More sharing options...
Jroc Posted July 5, 2020 Author Share Posted July 5, 2020 32 minutes ago, fjh said: possibly ! have a look It could be anything from 275 to 350 what trans does it have? If it has a 12 speed behind it ! will likely be a 350 ! if it has a 8 or 9 0r six speed it may be a 285M 300 M ! 8ll trans Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454990 Share on other sites More sharing options...
Jroc Posted July 5, 2020 Author Share Posted July 5, 2020 18 minutes ago, storkmack said: Pretty much what FJH said. Few years ago I bought a sight unseen 82’ R model that the seller stated that he had an E7 installed into it and new frame rails 5 years prior. Get there to pick it up with the lowboy and low and behold it was not E7 but an old 2 valve motor. That’s when the renegotiating started. The cab was shot and I was essentially buying it for the frame and the engine. Yeah this is my first big truck and don’t really know what I’m looking at and having a heck of a time getting any numbers I find to match something on the internet. Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-454991 Share on other sites More sharing options...
1965 Posted July 5, 2020 Share Posted July 5, 2020 From what I see, you have a fine truck with whatever horsepower rating. Hard to beat a 89 R model Mack! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-455010 Share on other sites More sharing options...
Jroc Posted July 6, 2020 Author Share Posted July 6, 2020 Appreciate the info everyone! Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-455090 Share on other sites More sharing options...
fjh Posted July 6, 2020 Share Posted July 6, 2020 22 hours ago, Jroc said: 8ll trans so likely the 285 hp then Quote Link to comment https://www.bigmacktrucks.com/topic/63174-can%E2%80%99t-find-engine-info/#findComment-455130 Share on other sites More sharing options...
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