LEB Ben
Arrogant A-hole At-Large
Alright...thank ya sir. To be honest, it will be about a month and another trip home before I could really dig any further into this. But thanks for the info.
Alright...thank ya sir. To be honest, it will be about a month and another trip home before I could really dig any further into this. But thanks for the info.
If you do not have a trans temp gauge you may want to install one before you head home. Would hate to have you overheat the trans.
You should invest in a good dial bore gage that reads in .0001 if you don't already have one, so the cylinders, main and rod bearing bores, and bearing clearance can be checked accurately. In a 351M-400 I would want to see at least .0025 and no more than .0032 on a main bearing. No less than .002 not more than .0025 on a rod bearing. No bearing should be tipped more than .0002 edge to edge. You should also use your porting stuff to chamfer the cranks oil holes if it's going to be ran hard.
Didn't you just have 2 weeks off you part timer?
Yeah...but I got into the third of 5 rounds of interviews with BB&T. Sooooooo...I'll be heading home for a 2 day office interview.
Which will probly turn into a week.
Right on Ben!...best of luck to ya!
1) The biggest problem of all is, there seems to be a backfiring issue. It's not a consistent problem, but it seems to happen most often when I let off the gas to coast or slow down, then when I go to get back on the throttle I get pop/backfire and then it'll accelerate. It also seems to happen at shift changes as well. It's worse when the vehicle is cold, but as I said...the problem is not consistent at all..
2) When traveling at sub 35mph speeds, and I go to give it a little bit of gas, it will sputter/stutter a little bit and then resume properly...not that big of a deal...just more of an annoyance..
3) There have been 5 times now in about 500 miles of driving where I will start the vehicle and start driving and after a few hundred feet the vehicle will die. It's almost like it's using whatever fuel is in the bowl, and then like there was no fuel in the outlet line from the fuel pump..
4) I've noticed a new vibration...or wobble rather...that wasn't there with the old engine between 60-70mph. Not sure if this is engine related, but it wasn't there until the swap..
5) Now I know these things aren't gas sippers, and I'm not complaining...I just made an observation, that could possibly be attributed to any of the above problems. The old, tired, worn out 351M would get 10mpg city and 14mpg hwy...the new 400 get's about 7 and 9.5. I just really didn't expect such a big drop in mpg's going from a bad engine to a good one.