Mackman87 Posted 3 hours ago Share Posted 3 hours ago Fellas, I have picked up a nice 1995 RD 688S. I ran the build sheet and it shows factory option as a full mechanical 350 E7 with an Eaton 8LL. When looking over the truck I see the mechanical pump (p7100) and I am told it’s an 350. When running the valves I noticed it has an E7 454 valve cover. Now I’m sure it is easy to grab the wrong cover if you have a few of these trucks and put it on but what’s the chances of that. I’m thinking they might have replaced engine as sometime and swapped an 454 and just put the pump and turbo off the 350 on it. Is there any way to verify if this is an actual 454? Quote Link to comment https://www.bigmacktrucks.com/topic/76545-e7-454-questions/ Share on other sites More sharing options...
Joey Mack Posted 2 hours ago Share Posted 2 hours ago I have to admit I wouldnt know how without getting part numbers off of the injectors,cam shaft, turbo,piston part numbers, injection pump info, ... Or... you could put it on a Dyno... How does it pull? I have driven many 350 8LL Rd's and they do really good. I would expect to feel the power difference. Quote Link to comment https://www.bigmacktrucks.com/topic/76545-e7-454-questions/#findComment-594071 Share on other sites More sharing options...
Mackman87 Posted 1 hour ago Author Share Posted 1 hour ago Well the truck pulls good, but it’s hard to say it pulls better than another 350.lol. I’m curious if a 454 would have a keyed cam like 427 or 460. Would the 454 have lower compression pistons. Quote Link to comment https://www.bigmacktrucks.com/topic/76545-e7-454-questions/#findComment-594076 Share on other sites More sharing options...
Joey Mack Posted 1 hour ago Share Posted 1 hour ago Sad to say, I dont remeber the cam key in the E-7. I have the books, but too busy to look at them... Quote Link to comment https://www.bigmacktrucks.com/topic/76545-e7-454-questions/#findComment-594077 Share on other sites More sharing options...
70mackMB Posted 5 minutes ago Share Posted 5 minutes ago 1 hour ago, Joey Mack said: I have the books, but too busy to look at them... What?!! Your too busy over there on the latest post of Connecticut Construction Trucks. 😁 .....Hippy 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76545-e7-454-questions/#findComment-594082 Share on other sites More sharing options...
Joey Mack Posted 4 minutes ago Share Posted 4 minutes ago Yeah.. hippy im done with it.. now I have Carple Tunnel in my wrist from all the texting... Quote Link to comment https://www.bigmacktrucks.com/topic/76545-e7-454-questions/#findComment-594083 Share on other sites More sharing options...
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