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Jaison

1993 Mack 688s E-7 350hp

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Can I add a Jake Brake to this old girl she’s has a   E-7 350hp engine in her! And if so what would I need to do?

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You should be able to. Call up your mack dealer give em your vin they should tell you. One of the other guys on here can prob tell ya

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As far as going to the dealer..... You may find that they don't know or don't care... I"m currently building a 1960 -ish E-6 2V.. and a TRD-72 transmission, and the 2 dealerships her, don't care... I found info ...Here.... Good luck..:)

 

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I forgot to tell you about replacing the exh. rockers too.. text me if you need to.. Jojo

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