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1997 427 sluggish pulling up any hill loaded


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Hey guys, new member here. I've got a 1997 ch 427 tri alxe dump truck. It is really really sluggish pulling any grade hill loaded. New injectors put in about 2 months ago, over head ran, air to air checked out great. I have the pedal to the floor and I'm losing power, down shift and same problem. 15 speed eaton in the truck. I was told it might be the shaft in the pump stripped out. Would that cause this problem. Going to check it out tomorrow. Was wondering what it could be. If everything checks out good I guess I will put the butane kit on it for boost. Is that a good Ideal to do, my neighbor has one on his 427 and it out pulls me 10 to 1..just need help and ideas in this sluggish as Mack. Thanks 

Edited by Moneypit
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