Mack superdog Posted September 1 Share Posted September 1 How can I get 500-525hp out of my e7 400 etech I put 30 over injectors and a Detroit turbo on and it doesn’t impress me like our 460 with just injectors does temp still runs cool and so does pyrometer so I know I have more room for more fuel but can u get 40-50 over injectors, can I advance the timing on it even tho it doesn’t have a mechanical pump , is there anyone who I can send the computer to put a tune on it ? Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/ Share on other sites More sharing options...
JoeH Posted September 2 Share Posted September 2 What year are truck/engine is it? Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/#findComment-557932 Share on other sites More sharing options...
Mack superdog Posted September 2 Author Share Posted September 2 2 hours ago, JoeH said: What year are truck/engine is it? 99 e7 e tech Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/#findComment-557936 Share on other sites More sharing options...
Joey Mack Posted September 2 Share Posted September 2 did you put the off-set cam key in the cam shaft? the 400 has a staight key.. PAI EKY-3179 MACK 54GC29 CAMSHAFT WOODRUFF KEY (.022" OFFSET) (E7) (OEM) 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/#findComment-557938 Share on other sites More sharing options...
Mack superdog Posted September 2 Author Share Posted September 2 52 minutes ago, Joey Mack said: did you put the off-set cam key in the cam shaft? the 400 has a staight key.. PAI EKY-3179 MACK 54GC29 CAMSHAFT WOODRUFF KEY (.022" OFFSET) (E7) (OEM) I did not can I do it with cam still in truck just pull the gear off or do I need to take it out Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/#findComment-557939 Share on other sites More sharing options...
Joey Mack Posted September 2 Share Posted September 2 Cam has to come out.. and ther are specific procedures that have to be followed.. You can NOT press the gear back on cold.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/#findComment-557940 Share on other sites More sharing options...
Joey Mack Posted September 2 Share Posted September 2 J-37720-C Mack E9, E7, & E6 Roller Lifter & Tappet Holder Kit Alternative This tool retains the roller lifters when removing and installing the camshaft. It works on E-7 EUP (Electronic Unit Pump) and tappets in the Mack E-9, E-7, and E-6 Engines. Inclues High-Quality Aftermarket Alternatives of: J-42425-3 Magnet Cap x16 J-42425-4 Bottom Rod x16 J-37720-5A Top Rod x16 J-37720-6A Grommet Kit x1 J-37720-13A Magnet x16 AM-J-37720-C Manufacturer Aftermarket Brand Aftermarket Storage Code W-46, W-42 J-37720-C Mack E9, E7, & E6 Roller Lifter & Tappet Holder Kit Alternative SKU# 1664-L Here are 3 essential tools to do a basic cam job. since it is running good I didnt list a couple others. Jojo Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/#findComment-557941 Share on other sites More sharing options...
880joe Posted September 2 Share Posted September 2 Offset cam key might be hard to find. I had some trouble finding the last one I bought Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/#findComment-557943 Share on other sites More sharing options...
880joe Posted September 2 Share Posted September 2 You could have 355/380 hp program put in ecm and gain 100 lbs of torque 400 has 1460lbs and 355 has 1560lbs 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74519-e7-etech-525-hp/#findComment-557951 Share on other sites More sharing options...
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