Pena dump truck service Posted May 10, 2021 Share Posted May 10, 2021 Hey guys. I just bought an 05 Mack Granite. I provided the Mack house my vin# and I was told my engine is rated and 370 horse power. I'm sure this has been asked before on here but I wondering if there are any upgrades to get more power out of this old dog without tearing the motor up. My truck has a 10 yard dump body on it and I want to pull a pup trailer. Any advice would be appreciated. If anyone has part #s I'll send you a gift card for some beer. Thanks in advance Quote Link to comment https://www.bigmacktrucks.com/topic/66676-2005-mack-granite-ami-performance-upgrade/ Share on other sites More sharing options...
OldRedMack Posted May 10, 2021 Share Posted May 10, 2021 Quote Link to comment https://www.bigmacktrucks.com/topic/66676-2005-mack-granite-ami-performance-upgrade/#findComment-473684 Share on other sites More sharing options...
R.E.D Posted May 12, 2021 Share Posted May 12, 2021 https://www.bigmacktrucks.com/topic/50251-mack-ai460-ai427-ami-low-torque-low-horsepower-poor-fuel-mileage-granite-dead-dog-remediation/ 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66676-2005-mack-granite-ami-performance-upgrade/#findComment-473755 Share on other sites More sharing options...
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