Jeffrey s Posted September 29, 2013 Share Posted September 29, 2013 I have a B61 with a sick 673 and a 5and3 tranny. I have found a 237 Mack engine will it fit my truck. if not what engine would be a good upgrade for my truck any info would be greatly appreciated .Thanks Jeff Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.