What is the difference. Has anyone out there done any hop-ups on this motor.
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What is the difference. Has anyone out there done any hop-ups on this motor.
Look at my reply in the 454 or 502 listing.
The 310 hp motor is not a good motor for adding more hp to. It is a perfect motor as is. If you have one leave it along or get a mag 454. The interal parts will hold up to increases in hp. The old saying pay me now or pay me a whole lot later.
Mike, Thanks for the info on the 7.4 MPI. I was thinking of just getting a less restrictive K&N to make it breath better. It has thru hull exhaust. Thought that it might be work the $. Let me know your thoughts.
I pro-charged my 99 Baja 7.4 put close to 90 hours on it before blowing the head gasket if this is the some motor that you have find you a 454-502 mag and dont wast time or money on the 7.4 its just not worh it. Just my .02 cents worth.
The best stock engine for superCharging is the 502 MAG. The internal parts are the best quality. Forged J & E pistons,Steel crank, ect..., It also has a compresion of 8.75:1, which is better for supercharging,all the other mercs have 9.0:1 or more compresion.
And at 415 HP, it has alot of safe HP hidden in that block. When I was shoping for a SuperCharger for my 230SX. The folks at C & B Marine informed me that they had no problems superCharging the 502 Mag. But head gaskets on the 454's were common. That was due to the high stock comp. ratios. I eventualy went with a ProCharger set up.