I have an 04 lb7 with no sound dampning on the oil panAppears to be an 03+ style block as I don't see the fitting for the oil pressure sender behind the water pump, but I would say it's an LLY as the oil pan doesn't have any of teh sound dampning material on it like my LB7 had. I know the later trucks did away with the hard plastic coating on the oil pans.
me toI have an 04 lb7 with no sound dampning on the oil pan
I think that's the plastic piece that the battery cable and starter solenoid wire run through.I'm going with 03-early 04 lb7 since there is a crankcase vent tube coming from the front cover behind the harmonic balancer
I believe you can use that for what ever engine you want.just have to use the flywheel for which ever engine you want and make sure the heads you want to use fit correctlly,i was told i could use a lbz block and have my lb7 head machined to fit.The bad part is if you start pouring the h.p. to it then you have to worry about lb7 rods or lbz pistons.This is only what i have been told you would want to confirm these facts before proceding. good luck
Appears to be an 03+ style block as I don't see the fitting for the oil pressure sender behind the water pump, but I would say it's an LLY as the oil pan doesn't have any of teh sound dampning material on it like my LB7 had. I know the later trucks did away with the hard plastic coating on the oil pans.
I knew each motor has plus's Thanks for making it more clear:thumb:LBZ-LMM-LML are balance a lot differently than LB7-LLY, you can't just swap flywheels.
LBZ-LMM-LML also have 1 more teeth on the crank reluctor wheels, you'd have to change that out.
In order to run an LBZ-LMM-LML with LB7-LLY heads, you'd have to have the entire rotating assembly be LBZ-LMM-LML or be LB7-LLY, and replace the crank reluctor wheel with an LB7-LLY wheel and replace the cam/crank sensors.
Additionally, a LBZ-LMM-LML front cover won't take a LB7-LLY water pump.
LBZ-LMM-LML rods are stronger than LB7-LLY, but the pistons are not.
If you want to "budget build" a motor for a LB7-LLY truck, your best bet is to get a LBZ block (stronger), LB7-LLY crank (better balance) with LBZ rods (stronger) and LB7-LLY cut pistons (less melting) LB7-LLY flywheel/flexplate LB7-LLY balancer, LB7-LLY front cover and water pump with LB7-LLY reluctor wheel, have the rotating assembly balanced, and run some head studs.
FWIW the pistons on the LB7 and LLY are the same... Also those arrows just show which way to install them, I haven't seen LBZ-LMM pistons in person yet. But the LML piston also has the direction marks, that being said I would assume the LBZ pistons would too. Couldn't you just look for numbers cast in the block for info?
FWIW the pistons on the LB7 and LLY are the same... Also those arrows just show which way to install them, I haven't seen LBZ-LMM pistons in person yet. But the LML piston also has the direction marks, that being said I would assume the LBZ pistons would too. Couldn't you just look for numbers cast in the block for info?