TimberJack Posted July 6, 2017 Share Posted July 6, 2017 Taking E7 motor out of my wrecked 2003 CH and dropping it in my 2004 which has a AC motor. How much work am I looking at swapping the wiring harness? The AC engine has electric fan an the E7 has air. Quote Link to comment https://www.bigmacktrucks.com/topic/50398-ac-427-swap-to-e7-427/ Share on other sites More sharing options...
Mack Technician Posted July 7, 2017 Share Posted July 7, 2017 Nice to see the AC engine gone, but that sounds like a big job. I'd start with measuring firewall punch outs....rest is trial (by fire) and error. I don't know anyone who dabbled out of Tier III beyond disabling. Quote Link to comment https://www.bigmacktrucks.com/topic/50398-ac-427-swap-to-e7-427/#findComment-374329 Share on other sites More sharing options...
TimberJack Posted July 7, 2017 Author Share Posted July 7, 2017 Ok I will check it out. The AC motor has been nothing but trouble since day one. So I figured what the hell the E7 only has 49,000 miles on rebuild and was a good running truck. Gone to pull both in the shop side by side and start disassemble. Quote Link to comment https://www.bigmacktrucks.com/topic/50398-ac-427-swap-to-e7-427/#findComment-374332 Share on other sites More sharing options...
880joe Posted July 9, 2017 Share Posted July 9, 2017 I have been looking at doing the same thing. Looks to me like use all the non egr wiring harness and change front engine cover so A/C compressor is on corect side and front engine mount is the same. All wiring going into cab appears to be same Quote Link to comment https://www.bigmacktrucks.com/topic/50398-ac-427-swap-to-e7-427/#findComment-374471 Share on other sites More sharing options...
Mack Technician Posted July 9, 2017 Share Posted July 9, 2017 On 7/7/2017 at 7:11 AM, TimberJack said: Ok I will check it out. The AC motor has been nothing but trouble since day one. So I figured what the hell the E7 only has 49,000 miles on rebuild and was a good running truck. Gone to pull both in the shop side by side and start disassemble. Our first AC sold went up to the upper pinninsula (da yupper) and burst into a ball of fire. Guy said " by da time I got odda'da truck, flames were lick'in me". The rest were melting all the plastic accessories under the hood. Split loom was turning into black dripping goo. Mack corp sent boxes of hood vents and told us to start punching cooling ports. Good performer, bad concept. Good luck!!! Quote Link to comment https://www.bigmacktrucks.com/topic/50398-ac-427-swap-to-e7-427/#findComment-374506 Share on other sites More sharing options...
sl3406 Posted September 19, 2017 Share Posted September 19, 2017 Timberjack how did the engine swap go? I have a friend with a 2006 with a bad motor. The truck has been a nightmare since new, and I was wondering how difficult putting in a non egr engine would be? Quote Link to comment https://www.bigmacktrucks.com/topic/50398-ac-427-swap-to-e7-427/#findComment-380121 Share on other sites More sharing options...
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